Systems and methods for injecting flowable materials into bones
First Claim
1. An assembly for injecting flowable material into bone comprisinga tubular body including an interior bore to carry a material flow, the tubular body having a longitudinal axis and including a dispensing end, an opening in the dispensing end communicating with the bore to dispense the material flow, a plunger located at least partially within the tubular body, the plunger adapted to be displaced along the longitudinal axis of the tubular body, an advancement mechanism attached to the plunger, a first advancement screw adapted to actuate the advancement mechanism to displace the plunger a first longitudinal displacement in a first direction in response to rotation of the first advancement screw in a first direction and to displace the plunger a first longitudinal displacement in a second direction in response to rotation of the first advancement screw in a second direction, and a second advancement screw adapted to actuate the advancement mechanism to displace the plunger a second longitudinal displacement in a first direction in response to rotation of the second advancement screw in a first direction and to displace the plunger a second longitudinal displacement in a second direction in response to rotation of the second advancement screw in a second direction.
6 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods provide greater control over the placement of cement and other flowable liquids into bone.
322 Citations
11 Claims
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1. An assembly for injecting flowable material into bone comprising
a tubular body including an interior bore to carry a material flow, the tubular body having a longitudinal axis and including a dispensing end, an opening in the dispensing end communicating with the bore to dispense the material flow, a plunger located at least partially within the tubular body, the plunger adapted to be displaced along the longitudinal axis of the tubular body, an advancement mechanism attached to the plunger, a first advancement screw adapted to actuate the advancement mechanism to displace the plunger a first longitudinal displacement in a first direction in response to rotation of the first advancement screw in a first direction and to displace the plunger a first longitudinal displacement in a second direction in response to rotation of the first advancement screw in a second direction, and a second advancement screw adapted to actuate the advancement mechanism to displace the plunger a second longitudinal displacement in a first direction in response to rotation of the second advancement screw in a first direction and to displace the plunger a second longitudinal displacement in a second direction in response to rotation of the second advancement screw in a second direction.
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10. An assembly for injecting flowable material into bone comprising
a tubular body including an interior bore to carry a material flow, the tubular body having a longitudinal axis and including a dispensing end, an opening in the dispensing end communicating with the bore to dispense the material flow, a plunger located at least partially within the tubular body, the plunger adapted to be displaced along the longitudinal axis of the tubular body, an advancement mechanism attached to the plunger, a first control element adapted for movement in a first direction to actuate the advancement mechanism to displace the plunger a first longitudinal displacement in a first direction, and a second control element adapted for movement in a first direction to actuate the advancement mechanism to displace the plunger a second longitudinal displacement in a first direction, at least one of the first and second control elements being operable in a second direction to actuate the advancement mechanism to displace the plunger in a second direction.
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11. An assembly for injecting flowable material into bone comprising
a tubular body including an interior bore to carry a material flow, the tubular body having a longitudinal axis and including a dispensing end, an opening in the dispensing end communicating with the bore to dispense the material flow, a plunger located at least partially within the tubular body, the plunger adapted to be displaced along the longitudinal axis of the tubular body, and an advancement mechanism attached to the plunger, whereby the advancement mechanism is operable in a first mode to displace the plunger a first longitudinal distance and in a second mode to displace the plunger a second longitudinal distance, the second longitudinal distance being different than the first longitudinal distance.
Specification