Vascular closure with multiple connections
View Patent ↗Among other things, methods and apparatus for inserting devices for closing a tissue opening are disclosed. An anchoring or sealing member has one or more stems and/or filaments that are offset from the center of the member, so that lateral adjustments or movements of the anchoring or sealing member do not uncover the opening, cause the anchoring or sealing member to stick through or pull through the opening. Embodiments including a valve adapted to accommodate a guide wire for addressing emergencies are also disclosed.
1. A medical treatment device for a tissue opening in a patient, comprising:
an anchoring member adapted for engagement with tissue bordering the tissue opening, the anchoring member having a concave inner surface and a convex outer surface; and
at least first and second filaments connected to the anchoring member and adapted to extend from the anchoring member to a position outside of the patient so that pulling one or more of the filaments tends to engage or press the anchoring member against the tissue to seal the tissue opening,
wherein the anchoring member has a center point inside at least one edge, the anchoring member includes at least first and second stems positioned inside the at least one edge, the first stem having a first end adjoining the inner surface of the anchoring member at a first point and extending away from the inner surface to a free second end, said second stem having a third end adjoining the inner surface of the anchoring member at a second point an extending away from the inner surface to a free fourth end, the first and second stem being separate from each other and wherein the first stem is offset laterally in a first direction from the center point, and the second stem is offset laterally in a second direction from the center point, the first and second direction substantially opposed to each other, wherein the distance between the first and second stems is less than or equal to a dimension of the tissue opening, and wherein the first filament is attached to the first stem and the second filament is attached to the second stem.
2. The apparatus of claim 1 , wherein the at least first and second stems are monolithic with the remainder of the anchoring member, wherein the first filament is threadedly attached to the first stem and the second filament is threadedly attached to the second stem.
3. The apparatus of claim 2 , wherein the anchoring member has a major axis through the center point and extending between first and second ends of the anchoring member, and wherein the first and second stems are on the major axis.
4. The apparatus of claim 3 , wherein the first and second stems are equidistant from the center point.
5. The apparatus of claim 1 , wherein the anchoring member includes at least third and fourth stems, each of the at least third and fourth stems having a respective filament, each of said stems displaced from the center point by approximately the same distance, and each of the stems separated from adjacent stems by approximately the same angle.
6. The apparatus of claim 1 , wherein the anchoring member includes a hemostatic valve adapted to permit passage of a guidewire therethrough, the valve substantially preventing blood flow from the convex outer surface to the concave inner surface of the anchoring member.
7. The apparatus of claim 6 , wherein the valve is substantially at the center point.
8. The apparatus of claim 6 , wherein the valve is offset from each of said first and second filaments.
9. The apparatus of claim 6 , further comprising a guidewire extending through the valve.
10. A method of treating an opening in tissue, comprising:
inserting through the opening a medical treatment device having an anchoring member having a concave inner surface configured to cover all of the opening, the medical treatment device having at least first and second filaments connected to the anchoring member and adapted to extend from the anchoring member to a position outside of the patient, the first filament having a first end adjoining the inner surface of the anchoring member at a first point and extending away from the inner surface to a free second end, said second filament having a third end adjoining the inner surface of the anchoring member at a second point and extending away from the inner surface to a free fourth end, the first and second filament being separate from each other, the anchoring member having a center point, with the first point offset laterally in a first direction from the center point, and the second point offset laterally in a second direction from the center point, the first and second directions substantially opposed to each other, so that the first and second filament extend to a location outside the patient;
providing tension on the first and second filaments so that the anchoring member is firmly engaged with tissue adjacent the opening, one or more of the anchoring member and the filaments preventing movement of the anchoring member with respect to the opening to the degree that an end of the anchoring member is within the opening;
locking the anchoring member in place with respect to the tissue.
11. The method of claim 10 , wherein the inserting step includes the anchoring member having a hemostatic valve and a guide wire extending through the valve, and further comprising:
monitoring the treatment of the tissue opening, and where an emergency is detected, applying a medical device over the guide wire to one or both of the tissue and the opening.
12. A method of treating an opening in tissue, comprising:
inserting through the opening a medical treatment device having an anchoring member having a concave inner surface configured to cover all of the opening, the medical treatment device having at least first and second filaments connected to the anchoring member and adapted to extend from the anchoring member to a position outside of the patient, the first filament having a first end attached to a first stem fixed to the inner surface of the anchoring member at a first point and extending away from the inner surface to a free second end, said second filament having a third end attached to a second stem fixed to the inner surface of the anchoring member at a second point an extending away from the inner surface to a free fourth end, the first and second filament being separate from each other, the anchoring member having a center point, with the first point offset laterally in a first direction from the center point, and the second point offset laterally in a second direction from the center point, the first and second directions substantially opposed to each other, so that the first and second filament extend to a location outside the patient, wherein the inserting step includes placing the anchoring member so that the first and second stems both extend through the opening so that the stems limit movement of the anchoring member with respect to the opening;
providing tension on the first and second filaments so that the anchoring member is firmly engaged with tissue adjacent the opening, one or more of the anchoring member and the filaments preventing movement of the anchoring member with respect to the opening to the degree that an end of the anchoring member is within the opening;
locking the anchoring member in place with respect to the tissue.