Vascular closure device suture tension limiting and indication mechanism

An apparatus for occluding a hole in a vessel wall, wherein an introducer defining a lumen passes through the hole from the outside of the vessel to the inside of the vessel, the apparatus comprising:

• an assembly having a predeployment state and a deployed state, said assembly comprising:
• a sleeve assembly defining a bore, wherein said sleeve assembly is adapted to be inserted into the lumen of the introducer;
• a pliant vascular closure device having a predeployment configuration wherein said pliant vascular closure device is deformed to fit within the bore of said sleeve assembly and a deployed state wherein said pliant vascular closure device is too large to fit within the bore of said sleeve assembly without deforming said pliant vascular closure device;
• an elongated body coupled to said pliant vascular closure device;
• and
• a biasing member connecting said elongated body to said sleeve assembly such that retracting said sleeve assembly away from said vascular closure device when said vascular closure device is deployed within the body of the patient applies tension to said elongated body and elastically deforms said biasing member and exerts a force on said vascular closure device, wherein said biasing member is positioned on the proximal end of said elongated body with the biasing member extending through said sleeve assembly, wherein said biasing member is constructed and arranged to lengthen longitudinally when tension is applied to said elongated body by retracting said sleeve assembly away from said pliant vascular closure device.

An apparatus for occluding a hole in a vessel wall of a vessel, wherein an introducer defining a lumen passes through the hole from the outside of the vessel to the inside of the vessel, the apparatus comprising:

• an assembly having a predeployment state and a deployed state, said assembly comprising:
• a sleeve assembly defining a bore, wherein said sleeve assembly is adapted to be inserted into the lumen of the introducer;
• a pliant vascular closure device;
• an elongated body coupled to said pliant vascular closure device, said elongated body comprising a protrusion;
• and
• a biasing member connecting said elongated body to said sleeve assembly such that retracting said sleeve assembly away from said vascular closure device when said vascular closure device is deployed within the body of the patient moves said elongated body relative to said sleeve assembly until said protrusion contacts said biasing member, wherein further movement of said elongated body relative to said sleeve assembly elastically deforms said biasing member between said protrusion and said sleeve assembly, applies tension to said elongated body, and exerts a force on said vascular closure device, and wherein application of a conforming force through said elongated body to said pliant vascular closure device deforms said pliant vascular closure device to conform against the vessel wall.

An apparatus for occluding a hole in a vessel wall of a vessel, wherein an introducer defining a lumen passes through the hole from the outside of the vessel to the inside of the vessel, the apparatus comprising:

• an assembly having a predeployment state and a deployed state, said assembly comprising:
• a sleeve assembly defining a bore, wherein said sleeve assembly is adapted to be inserted into the lumen of the introducer;
• a pliant vascular closure device;
• an elongated body coupled to said pliant vascular closure device, said elongated body comprising a protrusion;
• and
• a biasing member connecting said elongated body to said sleeve assembly such that retracting said sleeve assembly away from said vascular closure device when said vascular closure device is deployed within the body of the patient moves said elongated body relative to said sleeve assembly until said protrusion contacts said biasing member, wherein further movement of said elongated body relative to said sleeve assembly elastically deforms said biasing member between said protrusion and said sleeve assembly, applies tension to said elongated body, and exerts a force on said vascular closure device;
• wherein application of a conforming force through said elongated body to said pliant vascular closure device deforms said pliant vascular closure device to conform against the vessel wall, wherein said sleeve assembly is adapted to be inserted into the lumen of the introducer located in the hole in the vessel wall and wherein said sleeve assembly is adapted to deploy said vascular closure device out of the introducer sheath into the vessel, wherein said sleeve assembly is adapted to be withdrawn from the hole with the introducer sheath, and wherein said sleeve assembly further comprises a flange adapted to abut the introducer sheath and block the sleeve assembly from passing through the introducer sheath such that the introducer sheath may be used as a grip to retract said sleeve assembly away from said vascular closure device.