Device and method for facilitating hemostasis of a biopsy tract
First Claim
1. A system for preparing and delivering a hydrated sponge to a cannula for delivery to tissue, the system comprising:
- an adaptor comprising;
an elongated member having a first end, a second end, and a lumen extending from the first end to the second end allowing passage of fluid through the adaptor;
a fitting provided at the second end for connection to a cannula; and
a tapered section of the lumen tapering from a first diameter at the first end to a second diameter at the second end which is smaller than the first diameter such that a dry sponge pledget having a width larger than the second diameter is compressible when hydrated to allow passage of the pledget into the second diameter; and
a transparent visualization chamber connectable to the fitting provided at the second end of the elongated member.
3 Assignments
0 Petitions
Accused Products
Abstract
A system including an adaptor and a syringe is used for facilitating hemostasis of a biopsy tract or other puncture wound by delivery of an absorbable sponge in a hydrated state into the wound. The adaptor includes a tapered lumen for hydrating and compressing the relatively large absorbable sponge for delivery through a relatively small cannula, such as a biopsy needle. The hydrated absorbable sponge is injected through the biopsy needle into the biopsy tract by fluid. Alternatively, the sponge may be delivered to the biopsy needle by injection of fluid and then delivered to the biopsy tract by a plunger or stylet. The system may also include a trail staging chamber for inspecting a condition of the sponge before delivery. The implanted absorbable sponge facilitates hemostasis at the biopsy site or other puncture wound and minimizes the chance of internal bleeding. The absorbable sponge material is absorbed by the body over time.
186 Citations
21 Claims
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1. A system for preparing and delivering a hydrated sponge to a cannula for delivery to tissue, the system comprising:
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an adaptor comprising;
an elongated member having a first end, a second end, and a lumen extending from the first end to the second end allowing passage of fluid through the adaptor;
a fitting provided at the second end for connection to a cannula; and
a tapered section of the lumen tapering from a first diameter at the first end to a second diameter at the second end which is smaller than the first diameter such that a dry sponge pledget having a width larger than the second diameter is compressible when hydrated to allow passage of the pledget into the second diameter; and
a transparent visualization chamber connectable to the fitting provided at the second end of the elongated member. - View Dependent Claims (2, 3, 17, 18)
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4. A system for preparing and delivering a hydrated sponge to a cannula for delivery to tissue, the system comprising:
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an adaptor comprising;
an elongated member having a first end, a second end, and a lumen extending from the first end to the second end;
a fitting provided at the second end for connection to a cannula; and
a tapered section of the lumen tapering from a first diameter at the first end to a second diameter at the second end which is smaller than the first diameter such that a dry sponge pledget having a width larger than the second diameter is compressible when hydrated to allow passage of the pledget into the second diameter;
a transparent visualization chamber connectable to the fitting provided at the second end of the elongated member; and
a removable vent cap configured to engage both the second end of the elongated member and a distal end of the transparent visualization chamber.
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5. A system for preparing and delivering a hydrated sponge to a cannula for delivery to tissue, the system comprising:
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an adaptor comprising;
an elongated member having a first end, a second end, and a lumen extending from the first end to the second end;
a fitting provided at the second end for connection to a cannula; and
a tapered section of the lumen tapering from a first diameter at the first end to a second diameter at the second end which is smaller than the first diameter such that a dry sponge pledget having a width larger than the second diameter is compressible when hydrated to allow passage of the pledget into the second diameter;
a transparent visualization chamber connectable to the fitting provided at the second end of the elongated member; and
a removable vent cap configured to engage a distal end of the transparent visualization chamber.
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6. A system for preparing and delivering a hydrated sponge to a cannula for delivery to tissue, the system comprising:
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an adaptor having a tapered lumen allowing passage of fluid through the adaptor, the lumen tapering from a first diameter at a first end to a second diameter at a second end which is smaller than the first diameter; and
a trail staging chamber removably connectable to the second end of the adaptor and having a lumen with a substantially constant diameter which is equal to or less than the second diameter of the adaptor lumen. - View Dependent Claims (7, 8, 13, 14, 15, 16)
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9. A method of facilitating hemostasis of a puncture wound by injecting a sponge through a cannula into the puncture wound, the method comprising:
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inserting a pledget of a sponge into an adaptor having a tapered lumen;
connecting the adapter to a transparent visualization chamber and injecting the pledget from the adaptor into the visualization chamber;
visually inspecting the pledget within the visualization chamber to determine a condition of the pledget;
connecting the visualization chamber to a cannula; and
delivering the pledget through the cannula to facilitate hemostasis of a puncture wound. - View Dependent Claims (10, 11, 12)
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19. A system for preparing and delivering a hydrated sponge to a cannula for delivery to tissue, the system comprising:
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a staging chamber for staging a hydrated sponge in preparation for delivery of the hydrated sponge to tissue, the staging chamber having an axial lumen, a first end connectable to a fluid delivery member, and a second end; and
a vent cap removably connectable to the second end of the staging chamber, the vent cap when connected to the staging chamber allowing fluid to pass from the staging chamber through the vent cap, and substantially preventing the hydrated sponge from passing from the staging chamber through the vent cap wherein the vent cap includes a locating surface which positions an end of the hydrated sponge axially in the axial lumen. - View Dependent Claims (20, 21)
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Specification