Veress needle - Revision history

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	== Veress Needle ==		== 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 ===

			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 ==		== 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]]		[[Category:Surgical instruments]]

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2025-02-09T12:01:24Z

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← Older revision		Revision as of 12:01, 9 February 2025
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	== Veress Needle ==		== 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.

	The Veress needle is a medical instrument commonly used in laparoscopic surgery. It is named after the Hungarian gynecologist, Dr. János Veress, who invented it in the 1930s. The Veress needle is an essential tool in creating a pneumoperitoneum, which is the inflation of the abdominal cavity with carbon dioxide gas to create a working space for laparoscopic procedures.		== Design and Function ==

	~~=== Design~~ and ~~Function ===~~		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 consists of a long, slender, hollow metal tube with a sharp, pointed tip. It is typically made of stainless steel or titanium. The needle is attached to a handle that allows the surgeon to control its insertion and movement. At the proximal end of the needle, there is a valve mechanism that regulates the flow of gas.		== Usage in Laparoscopic Surgery ==

	~~During~~ laparoscopic surgery, the Veress needle is inserted ~~into~~ the abdominal ~~cavity through~~ a small incision ~~or a puncture made in~~ the ~~abdominal wall. The~~ needle ~~is inserted~~ at an angle~~, and as it penetrates the layers of tissue, the surgeon can feel a series of "pops" or resistance, indicating the passage through different layers~~. Once the needle is ~~properly positioned~~, ~~the valve is opened, and~~ carbon dioxide ~~gas~~ is ~~slowly injected into~~ the ~~abdominal cavity~~.		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.

	~~=== Advantages~~ and ~~Uses ===~~		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.

	The Veress needle is widely used in laparoscopic surgery due to its several advantages. Firstly, it allows for a safe and controlled entry into the abdominal cavity, minimizing the risk of injury to surrounding organs and blood vessels. Secondly, the needle's design helps prevent gas leakage during insufflation, ensuring a stable pneumoperitoneum throughout the procedure. Lastly, the Veress needle is relatively inexpensive compared to other trocars used in laparoscopic surgery.		== Complications ==

	~~The~~ Veress needle is ~~primarily used in laparoscopic procedures~~ such as ~~cholecystectomy (gallbladder removal), appendectomy (appendix removal)~~, and ~~various gynecological surgeries~~. ~~It is also used in diagnostic laparoscopy~~ to ~~visualize and evaluate the abdominal organs~~.		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.

	==~~= Safety Considerations =~~==		== History ==

	~~While the~~ Veress needle ~~is generally considered safe, there are potential risks associated with its use~~. ~~Improper insertion or excessive force can lead to injury to organs such as~~ the ~~bowel~~, ~~blood vessels, or bladder~~. ~~To minimize these risks~~, ~~surgeons must exercise caution~~ and ~~ensure proper training~~ in ~~the use of the Veress needle~~.		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.

	==~~= Conclusion =~~==		== Related Pages ==

	The Veress needle is a crucial instrument in laparoscopic surgery, allowing for safe and controlled entry into the abdominal cavity. Its design and function make it an essential tool in creating a pneumoperitoneum, enabling surgeons to perform minimally invasive procedures with precision. Despite its potential risks, when used correctly, the Veress needle contributes to the success and safety of laparoscopic surgeries.		* [[Laparoscopic surgery]]

	~~== See Also ==~~
	* [[Laparoscopic ~~Surgery~~]]
	* [[Pneumoperitoneum]]		* [[Pneumoperitoneum]]
	* [[~~Trocar~~]]		* [[János Veres]]

	== References ==		== References ==
	~~<references />~~

	~~[[Category~~:~~Medical Equipment]]~~		* 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.
	[[Category:Surgical ~~Instruments~~]]		* Veres, J. (1938). "Neue Methode zur Behandlung des Spontan Pneumothorax." ''Deutsche Medizinische Wochenschrift''.

			[[Category:Surgical instruments]]

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2024-01-22T16:14:38Z

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== Veress Needle ==

The Veress needle is a medical instrument commonly used in laparoscopic surgery. It is named after the Hungarian gynecologist, Dr. János Veress, who invented it in the 1930s. The Veress needle is an essential tool in creating a pneumoperitoneum, which is the inflation of the abdominal cavity with carbon dioxide gas to create a working space for laparoscopic procedures.

=== Design and Function ===

The Veress needle consists of a long, slender, hollow metal tube with a sharp, pointed tip. It is typically made of stainless steel or titanium. The needle is attached to a handle that allows the surgeon to control its insertion and movement. At the proximal end of the needle, there is a valve mechanism that regulates the flow of gas.

During laparoscopic surgery, the Veress needle is inserted into the abdominal cavity through a small incision or a puncture made in the abdominal wall. The needle is inserted at an angle, and as it penetrates the layers of tissue, the surgeon can feel a series of "pops" or resistance, indicating the passage through different layers. Once the needle is properly positioned, the valve is opened, and carbon dioxide gas is slowly injected into the abdominal cavity.

=== Advantages and Uses ===

The Veress needle is widely used in laparoscopic surgery due to its several advantages. Firstly, it allows for a safe and controlled entry into the abdominal cavity, minimizing the risk of injury to surrounding organs and blood vessels. Secondly, the needle's design helps prevent gas leakage during insufflation, ensuring a stable pneumoperitoneum throughout the procedure. Lastly, the Veress needle is relatively inexpensive compared to other trocars used in laparoscopic surgery.

The Veress needle is primarily used in laparoscopic procedures such as cholecystectomy (gallbladder removal), appendectomy (appendix removal), and various gynecological surgeries. It is also used in diagnostic laparoscopy to visualize and evaluate the abdominal organs.

=== Safety Considerations ===

While the Veress needle is generally considered safe, there are potential risks associated with its use. Improper insertion or excessive force can lead to injury to organs such as the bowel, blood vessels, or bladder. To minimize these risks, surgeons must exercise caution and ensure proper training in the use of the Veress needle.

=== Conclusion ===

The Veress needle is a crucial instrument in laparoscopic surgery, allowing for safe and controlled entry into the abdominal cavity. Its design and function make it an essential tool in creating a pneumoperitoneum, enabling surgeons to perform minimally invasive procedures with precision. Despite its potential risks, when used correctly, the Veress needle contributes to the success and safety of laparoscopic surgeries.

== See Also ==
* [[Laparoscopic Surgery]]
* [[Pneumoperitoneum]]
* [[Trocar]]

== References ==
<references />

[[Category:Medical Equipment]]
[[Category:Surgical Instruments]]