Extractable filler for inserting medicine into vertebral body
First Claim
1. An extractable device for inserting a medicinal filling into a vertebral body, said device comprising:
- a filling member comprising a flexible wall and provided with a holding portion, an injection port at one end of the holding portion, and an opening at another, releasably closable, opening end of the holding portion;
one or more thread, each having one end for releasably closing said opening end of said holding portion in such a manner that said opening end is leakproof; and
a pasty medicine to be injected into said holding portion via said injection port of said filling member in the wake of a process for inserting said filling member into the vertebral body whereby said pasty medicine solidifies in said holding portion of said filling member;
said opening end of said holding portion being reopened at the time when other end of said threads is pulled by an external force, thereby enabling said filling member to be extracted from the vertebral body so as to leave only said medicine in the vertebral body,wherein said holding portion of said filling member is inflatable and is substantially tabular after being inflated, wherein cross sections perpendicular to a longitudinal axis of the holding portion are substantially elliptical and have increasing areas thereof along a direction from the injection port to the opening of the holding portion.
2 Assignments
0 Petitions
Accused Products
Abstract
An extractable device is used to insert a medicinal filling into a vertebral body. The device comprises a filling member and a pasty medicine. The filling member is made of a flexible and permeable wall and is provided with a holding portion and an injection port via which the pasty medicine is injected into the holding portion after the filling member is inserted into the vertebral body. The holding portion is provided with an opening which is releasably lashed by one end of one or more threads so as to make the opening leakproof. Upon completion of solidification of the pasty medicine in the holding portion of the filling member, other end of the thread is pulled to unlash the opening of the holding portion, thereby enabling the filling member to be extracted from the vertebral body so as to leave only the medicine in the vertebral body.
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Citations
15 Claims
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1. An extractable device for inserting a medicinal filling into a vertebral body, said device comprising:
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a filling member comprising a flexible wall and provided with a holding portion, an injection port at one end of the holding portion, and an opening at another, releasably closable, opening end of the holding portion; one or more thread, each having one end for releasably closing said opening end of said holding portion in such a manner that said opening end is leakproof; and a pasty medicine to be injected into said holding portion via said injection port of said filling member in the wake of a process for inserting said filling member into the vertebral body whereby said pasty medicine solidifies in said holding portion of said filling member; said opening end of said holding portion being reopened at the time when other end of said threads is pulled by an external force, thereby enabling said filling member to be extracted from the vertebral body so as to leave only said medicine in the vertebral body, wherein said holding portion of said filling member is inflatable and is substantially tabular after being inflated, wherein cross sections perpendicular to a longitudinal axis of the holding portion are substantially elliptical and have increasing areas thereof along a direction from the injection port to the opening of the holding portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for implanting a solidified medicine into a vertebral body comprising:
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inserting a filling member in a hole of a vertebral body, said filling member comprising a flexible and permeable wall and provided with a holding portion, an injection port at one end of the holding portion, and an opening at another, releasably closable, opening end of the holding portion, wherein one or more thread is provided and each having one end releasably closing said opening end of said holding portion in such a manner that said opening end is leakproof, wherein said holding portion of said filling member is inflatable and is substantially tubular after being inflated, wherein cross sections perpendicular to a longitudinal axis of the holding portion are substantially elliptical and have increasing areas thereof along a direction from the injection port to the opening end of the holding portion; injecting a pasty medicine into said holding portion via said injection port of said filling member, so that said holding portion is inflated and said pasty medicine solidifies in said holding portion of said filling member; and reopening said releasable closable opening end of said holding portion by pulling other end of said threads, thereby enabling said filling member to be extracted from the vertebral body so as to leave only said solidified medicine in the vertebral body, wherein said solidified pasty medicine has a shape similar to that of the inflated holding portion, and a cross section having a greater area of said solidified medicine is closer to a cortical rim opposite to a pedicle of said vertebral body in comparison with a cross section having a smaller area of said solidified medicine. - View Dependent Claims (12, 13, 14, 15)
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Specification