High pressure delivery system
First Claim
1. A high pressure application for driving the delivery of a flowable tissue implant material comprising:
- a first column including a vessel section and an introduction section, said vessel section defining a substantially smooth bore having an outlet and an entrance adjoining said introduction section, said introduction section defining an opening having a larger cross-sectional area than said bore;
a second column drivably engageable with said first column along an advancement axis; and
outside said first column; and
a piston member having a base and head, wherein said head is adapted to form a high-pressure seal in said bore and said base is positioned against a portion of said second column.
7 Assignments
0 Petitions
Accused Products
Abstract
This relates to an improved delivery system for accurately loading and controlling the delivery of flowable material to a patient. Particularly, the system may be used in the injection of hard tissue implant materials such as PMMA under pressures up to about 4000 psi. The system includes an applicator with a first column having an implant material introduction section adapted to provide for effective loading of the implant material and a second column housing a piston. The introduction section has a larger size than that of a vessel section or bore in which the requisite pressure seal between the piston and bore wall is formed. The first column may include an introduction section flared open to an included larger funnel-like opening or a separate funnel may be used that interfaces with the introduction section to facilitate the introduction of implant material. Handles on the first and second columns to be turned relative to each other to advance the columns toward each other may be provided for manual actuation of the applicator to drive implant material through a cannula and deliver implant material to a desired site.
210 Citations
29 Claims
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1. A high pressure application for driving the delivery of a flowable tissue implant material comprising:
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a first column including a vessel section and an introduction section, said vessel section defining a substantially smooth bore having an outlet and an entrance adjoining said introduction section, said introduction section defining an opening having a larger cross-sectional area than said bore;
a second column drivably engageable with said first column along an advancement axis; and
outside said first column; and
a piston member having a base and head, wherein said head is adapted to form a high-pressure seal in said bore and said base is positioned against a portion of said second column. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 28)
a first column including a vessel section and an introduction section, said vessel section defining a substantially smooth bore having an outlet and an entrance adjoining said introduction section, said introduction section defining an opening having a larger cross-sectional area than said bore wherein said introduction section opening is at least about 1 inch in diameter;
a second column drivably engageable with said first column along an advancement axis; and
outside said first column; and
a piston member having a base and head, wherein said head is adapted to form a high-pressure seal in said bore and said base in positioned against a portion of said second column.
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28. The applicator of claim 27, wherein said diameter is up to about 2 inches.
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26. A high pressure applicator for driving the delivery of a flowable tissue implant material comprising:
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a first column including a vessel section and an introduction section, said vessel section defining a substantially smooth bore having an outlet and an entrance open to said introduction sections, said introduction section being flared open for at least one portion;
a second column drivably engageable with said first column along an advancement axis; and
outside said first column; and
a piston member including a base and head, wherein said head is adapted to form a high-pressure seal in said bore and said base in positioned against a portion of said second column.
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29. A high pressure applicator for driving the delivery of a flowable tissue implant material to effect vertebroplasty comprising:
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a first column including a vessels section having a volume of at least about 4 cc and an introduction section, said vessel section defining a substantially smooth bore having an outlet and an entrance adjoining said introduction sections, said introduction section defining an opening having a larger cross-sectional area than said bore;
a second column drivably engageable with said first column along an advancement axis; and
a piston member having a base and head, wherein said head is adapted to from a high-pressure seal in said bore and said base is positioned against a portion of said second column.
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Specification