초록 ▼

A system is provided for aspirating fluid from a surgical site. The system includes an outlet tube that leads to a suction canister or other suitable receptacle for collecting fluid. The outlet tube includes an anti-siphon adapter which defines an atmospheric vent downstream of the outflow connectio

A system is provided for aspirating fluid from a surgical site. The system includes an outlet tube that leads to a suction canister or other suitable receptacle for collecting fluid. The outlet tube includes an anti-siphon adapter which defines an atmospheric vent downstream of the outflow connection to an endoscopic device. The vent allows atmospheric pressure to enter the outlet tube to increase the pressure at the outflow of the endoscopic device.

대표청구항 ▼

A system is provided for aspirating fluid from a surgical site. The system includes an outlet tube that leads to a suction canister or other suitable receptacle for collecting fluid. The outlet tube includes an anti-siphon adapter which defines an atmospheric vent downstream of the outflow connectio

A system is provided for aspirating fluid from a surgical site. The system includes an outlet tube that leads to a suction canister or other suitable receptacle for collecting fluid. The outlet tube includes an anti-siphon adapter which defines an atmospheric vent downstream of the outflow connection to an endoscopic device. The vent allows atmospheric pressure to enter the outlet tube to increase the pressure at the outflow of the endoscopic device. , to maintain the low friction surface of the shoe base in controlled force contact with the belt, the compression mechanism including at least one spring pretensioned to act on said arm assembly at said contact point to bias said arm assembly in a direction to maintain the low friction surface of the attached shoe base in contact with the belt, the arm assembly including an L-shaped arm, said first point being at an elbow of said arm, said second point being at one end of said arm and said contact point being at the other end of said arm, and wherein said spring is a compression spring tensioned to apply a force to said arm at said contact point to pivot said arm in a direction to bring the low friction surface of the shoe base attached to the corresponding arm assembly into contact with the belt, the compression mechanism further including a second compression spring mounted to apply a counterbalancing force to said arm at said contact point to the force being applied by said spring, the force applied by said spring being greater than the force applied by said second spring. 2. A mechanism as claimed in claim 1, wherein said contact point is at said first point and said spring is part of a pivot at said first point. 3. A mechanism as claimed in claim 2 including a tension adjusting mechanism for said spring. 4. A mechanism as claimed in claim 1, wherein said spring and said second spring are selected and pretensioned so that a substantially constant force is applied through said arm and the shoe base attached thereto to the belt regardless of arm position. 5. A mechanism as claimed in claim 1 including a pretensioning adjustment for at least one of said springs. 6. A mechanism as claimed in claim 1 wherein said arm has legs, the relative lengths of which are selected to achieve a selected mechanical advantage. 7. A mechanism as claimed in claim 1 including a pretensioning adjustment mechanism for said compression mechanism. 8. A mechanism as claimed in claim 1, wherein said shoe base is pivotably connected to said arm assembly at said second point, permitting the shoe base to pivot to maintain said low friction surface substantially parallel to the belt. 9. A mechanism as claimed in claim 1 wherein there are a plurality of said shoe bases, each acting at a different point along said belt, there being at least one arm assembly for each said shoe base. 10. A mechanism as claimed in claim 1 wherein there are a plurality of compression mechanisms acting on each arm assembly. 11. A mechanism as claimed in claim 1 wherein said low friction surface is removably attached to said shoe base. 12. A self adjusting contact mechanism for a belt system including: (a) a shoe base having a low friction belt contacting surface; (b) an arm assembly pivotally connected to a stable surface at a first point thereon and having a shoe base attached at a second point thereon spaced from said first point; and (c) a compression mechanism acting on said arm assembly at a contact point spaced from said second point to apply a controlled force to the arm assembly, and through the arm assembly to the shoe base attached thereto, to maintain the low friction surface of the shoe base in controlled force contact with the belt, the compression mechanism including at least one spring pretensioned to act on said arm assembly at said contact point to bias said arm assembly in a direction to maintain the low friction surface of the attached shoe base in contact with the belt, the arm assembly including an L-shaped arm, said first point being at an elbow of said arm, said second point being at one end of said arm and said contact point being at the other end of said arm, and wherein said spring is a compression spring tensioned to apply a force to said arm at said contact point to pivot said arm in a direction to bring the low friction surface of the shoe base attached to the corresponding arm assembly into contact with the belt, the arm assembly including a t least two brackets attached at spaced points along said arm, said first point being at substantially one end of each bracket, which end is pivotably connected to said stable surface, and said second point being at substantially a second end of each bracket. 13. A mechanism as claimed in claim 12 wherein said brackets are on opposite sides of said arm. 14. A mechanism as claimed in claim 13 wherein said second end of each bracket is pivotably connected to said shoe base, permitting the shoe base to pivot to maintain said low friction surface substantially parallel to the belt. ucture. 4. The adjustable basketball goal system of claim 3, further comprising a locking rod attached to the rigid support, the locking rod forming a portion of the locking mechanism. 5. The adjustable basketball goal system of claim 4, further comprising one or more locking plates that are sized and configured to selectively engaging the locking rod. 6. The adjustable basketball goal system of claim 5, further comprising a housing disposed about at least a portion of the locking rod. 7. The adjustable basketball goal system of claim 6, wherein the one or more locking plates of the locking member are disposed within the housing. 8. The adjustable basketball goal system of claim 5, further comprising a stop that is sized and configured to engage the one or more locking plates. 9. The adjustable basketball goal system of claim 4, wherein the locking rod moves relative to the second support structure. 10. The adjustable basketball goal system of claim 3, further comprising a release that is sized and configured to assist in disposing the locking mechanism between the engaged position and the disengaged position. 11. The adjustable basketball goal system of claim 10, wherein the release includes at least one tab, the tab selectively engaging the one or more locking plates to urge the one or more locking plates into a substantially perpendicular position relative to the locking rod. 12. The adjustable basketball goal system of claim 5, further comprising a biasing member that is sized and configured to bias the one or more locking plates into a non-perpendicular angle relative to the locking rod, thereby permitting the locking plates to frictionally engage the locking rod. 13. The adjustable basketball goal system of claim 5, further comprising a second set of one or more locking plates that are sized and configured to selectively engaging the locking rod. 14. An adjustable basketball goal system that is capable of allowing a height of a basketball goal to be adjusted relative to a playing surface, the adjustable basketball goal system comprising: a basketball goal assembly; a rigid support; a first support structure pivotally connected to the rigid support, the first support structure including a first support arm connected to the basketball goal assembly and the rigid support, the first support structure including a second support arm connected to the basketball goal assembly and the rigid support, the first support arm, the basketball goal assembly, the rigid support and the second support arm being interconnected to form a four-element linkage with a generally parallelogram configuration, the first support structure being sized and configured to allow the height of the basketball goal to be adjusted relative to the playing surface; a second support structure including a first support arm connected to the rigid support and an extension arm, the second support structure including a second support arm connected to the rigid support and the extension arm, the first support arm, the rigid support, the extension arm and the second support arm being interconnected to form a four-element linkage with a generally parallelogram configuration, wherein adjustment of the second support structure causes the first support structure to be adjusted, which adjusts the height of the basketball goal relative to the playing surface; and a locking mechanism operably disposed relative to the second support structure, the locking mechanism including an engaged position that restricts movement of the second support structure and a disengaged position that allows relatively free movement of the second support structure. 15. The adjustable basketball goal system of claim 14, wherein the extension arm is connected to an end of the first support arm of the second support structure and to an end of the second support arm of the second support structure. 16. The adjustable basketball goal system of claim 14, wherein the locking mechanism includes a