Pneumoperitoneum needle
View Patent ↗Pneumoperitoneum needles for providing and/or insufflating a corporal and/or abdominal cavity are provided. The pneumoperitoneum needle can include a housing, an elongate tubular body extending from a distal surface of the housing, and an elongate hollow tubular rod slidably received within the tubular body. The tubular body preferably includes a passage formed therethrough for connection to a gas administration system. The tubular rod preferably includes a blunt distal end defining an opening, and a proximal end portion defining an opening formed therethrough.
1. A pneumoperitoneum needle for insufflating a corporal cavity, the pneumoperitoneum needle comprising:
an elongate tubular body;
an elongate hollow tubular rod slidably disposed within the tubular body;
a manifold connected to and in fluid communication with a proximal end of the tubular rod; and
a tubular stem at least partially disposed within the manifold and in fluid communication therewith, the manifold being movable with respect to the stem between a first position and a second position upon a movement of the tubular rod relative to the tubular body, wherein the position of the manifold relative to the stem controls fluid flow through the elongate hollow tubular rod;
wherein when the manifold is in the first position a fluid is communicated to the tubular rod, and when the manifold is in the second position said fluid is communicated to an indicator chamber to activate an indicator.
2. The pneumoperitoneum needle according to claim 1 , further including:
a first O-ring disposed between the manifold and the stem, the first O-ring being positioned distal of a passage communicating with the indicator chamber; and
a second O-ring disposed between the manifold and the stem, the second O-ring being positioned proximal of the passage.
3. The pneumoperitoneum needle according to claim 2 , wherein when the tubular rod is in a first position, an opening formed in the manifold is positioned distal of the first O-ring, and when the tubular rod is in a second position, the opening formed in the manifold is positioned between the first O-ring and the second O-ring.
4. The pneumoperitoneum needle according to claim 2 , wherein each of the first and second O-rings is fixedly positioned relative to the stem.
5. The pneumoperitoneum needle according to claim 1 , wherein the tubular rod is biased to the first position.
6. The pneumoperitoneum needle according to claim 1 , further including a biasing member operatively positioned to bias the tubular rod to the first position.
7. The pneumoperitoneum needle according to claim 1 , further comprising a housing for supporting the tubular body, wherein the tubular body extends distally from the housing.
8. The pneumoperitoneum needle according to claim 6 , wherein the biasing member is disposed between a distally oriented surface of the stem and a proximally oriented surface of the tubular rod.
9. The pneumoperitoneum needle according to claim 1 , wherein the tubular body includes a distal end defining a piercing tip.
10. The pneumoperitoneum needle according to claim 9 , wherein the tubular rod is dimensioned such that when the tubular rod is in the first position the distal end of the tubular rod extends beyond the piercing tip of the tubular body and when the tubular rod is in the second position the piercing tip of the tubular body extends beyond the distal end of the tubular rod.
11. The pneumoperitoneum needle according to claim 3 , further comprising a gas administering system operatively connectable to the opening formed in the manifold, wherein the gas administering system delivers insufflation gases to the operative site.
12. The pneumoperitoneum needle according to claim 11 , wherein the gas administering system includes:
a source of insufflation gas; and
a conduit fluidly interconnecting the source of insufflation gas to a port in communication with the opening in the manifold.
13. The pneumoperitoneum needle according to claim 12 , wherein the gas administering system further includes a gauge for measuring at least one of the volume, quantity and pressure of insufflation gas delivered to the operative site.
14. A pneumoperitoneum needle for insufflating a corporal cavity, the pneumoperitoneum needle comprising:
an elongate tubular body;
an elongate hollow tubular rod slidably disposed within the tubular body;
a manifold connected to and in fluid communication with a proximal end of the tubular rod;
a stem at least partially disposed within the manifold, the manifold being movable with respect to the stem between a first position and a second position upon a movement of the tubular rod relative to the tubular body, wherein the stem and the manifold are dimensioned to define an annular channel therebetween and wherein the position of the manifold relative to the stem controls fluid flow through the elongate hollow tubular rod; and
an indicator chamber in fluid communication with the manifold and the stem, the indicator chamber including a floating indicator therein;
wherein when the manifold is in the first position a fluid is communicated to the tubular rod, and when the manifold is in the second position said fluid is communicated to the indicator chamber to activate the indicator.
15. An insufflation system for insufflating a corporal cavity, the insufflation system comprising:
a pneumoperitoneum needle configured to penetrate tissue and an deliver an insufflating fluid to the corporal cavity, the pneumoperitoneum needle comprising:
an elongate tubular body;
an elongate hollow tubular rod slidably disposed within the tubular body;
a manifold connected to and in fluid communication with a proximal end of the tubular rod; and
a tubular stem at least partially disposed within the manifold and in fluid communication therewith, the manifold being movable with respect to the stem between a first position and a second position upon a movement of the tubular rod relative to the tubular body, wherein the position of the manifold relative to the stem controls fluid flow through the elongate hollow tubular rod;
wherein when the manifold is in the first position a fluid is communicated to the tubular rod, and when the manifold is in the second position said fluid is communicated to an indicator chamber to activate an indicator; and
a gas administering system fluidly connected to the pneumoperitoneum needle, the gas administering system including:
a source of insufflation gas; and
a conduit fluidly interconnecting the source of insufflation gas to the manifold.
16. The insufflation system according to claim 15 , wherein the pneumoperitoneum needle further includes:
a first seal member disposed between the manifold and the stem, the first seal member being positioned distal of a passage communicating with the indicator chamber; and
a second seal member disposed between the manifold and the stem, the second seal member being positioned proximal of the passage.
17. The insufflation system according to claim 16 , wherein when the tubular rod of the pneumoperitoneum needle is in a first position, an opening formed in the manifold is positioned distal of the first seal member, and when the tubular rod is in a second position, the opening formed in the manifold is positioned between the first seal member and the second seal member.
18. The insufflation system according to claim 15 , wherein the tubular rod of the pneumoperitoneum needle is biased to the first position.
19. The insufflation system according to claim 15 , wherein the tubular rod of the pneumoperitoneum needle is dimensioned such that when the tubular rod is in the first position the distal end of the tubular rod extends beyond the piercing tip of the tubular body and when the tubular rod is in the second position the piercing tip of the tubular body extends beyond the distal end of the tubular rod.
20. The insufflation system according to claim 15 , wherein the gas administering system further includes a gauge for measuring at least one of the volume, quantity and pressure of insufflation gas delivered to the operative site.