Low cost low profile inflatable bone tamp
First Claim
Patent Images
1. A device for performing a surgical procedure, the device comprising:
- an elongate shaft comprising an inner surface defining a lumen, the elongate shaft comprising a primary region having a first diameter and a secondary region having a second diameter, the first diameter being greater than the second diameter, the elongate shaft comprising a transition region that is tapered continuously between the primary region and the secondary region, the elongate shaft comprising a smooth outer surface along an entire length of the shaft;
an inflatable structure including a proximal end region coupled to a distal end region of the primary region and a distal end region coupled to the secondary region such that the secondary region and the transition region each extend at least partially within an inflatable chamber of the inflatable structure; and
a stylet movably positioned within the lumen and configured to provide additional rigidity to the secondary region,wherein a distal end region of the secondary region comprises a distal end surface that defines a completely closed distal end of the shaft that is configured to prevent unwanted material ingress into the lumen, the distal end surface defining a distal stop for the stylet such that a tip of the stylet engages the distal end surface.
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Abstract
An inflatable bone tamp for performing a minimally invasive surgical procedure includes a shaft having a primary region and a reduced diameter region, and an inflatable structure surrounding at least a portion of the reduced diameter region. The reduced diameter region of the shaft allows the deflated size of the inflatable structure to be minimized, while at the same time eliminating the need for the conventional dual lumen balloon catheter construction.
72 Citations
19 Claims
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1. A device for performing a surgical procedure, the device comprising:
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an elongate shaft comprising an inner surface defining a lumen, the elongate shaft comprising a primary region having a first diameter and a secondary region having a second diameter, the first diameter being greater than the second diameter, the elongate shaft comprising a transition region that is tapered continuously between the primary region and the secondary region, the elongate shaft comprising a smooth outer surface along an entire length of the shaft; an inflatable structure including a proximal end region coupled to a distal end region of the primary region and a distal end region coupled to the secondary region such that the secondary region and the transition region each extend at least partially within an inflatable chamber of the inflatable structure; and a stylet movably positioned within the lumen and configured to provide additional rigidity to the secondary region, wherein a distal end region of the secondary region comprises a distal end surface that defines a completely closed distal end of the shaft that is configured to prevent unwanted material ingress into the lumen, the distal end surface defining a distal stop for the stylet such that a tip of the stylet engages the distal end surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for performing a surgical procedure, the system comprising:
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a cannula comprising an inner surface defining a lumen; and an inflatable bone tamp, the inflatable bone tamp comprising a shaft having a primary region and a reduced diameter region, the shaft comprising a transition region that is tapered continuously between the primary region and the reduced diameter region, the inflatable bone tamp comprising an inflatable structure including a proximal end region being coupled to a distal end region of the primary region of the shaft and a distal end region of the inflatable structure being coupled to the reduced diameter region such that at least a portion of the transition region and the reduced diameter region extend within an inflatable chamber of the inflatable structure, the shaft comprising spaced apart ports extending through inner and outer surfaces of the shaft such that the ports extend perpendicular to an axis defined by the shaft, the shaft comprising a smooth outer surface along an entire length of the shaft, the inflatable bone tamp comprising a stylet movably positioned within a lumen of the shaft, wherein the distal end region comprises a distal end surface that defines a completely closed distal end of the shaft that is configured to prevent unwanted material ingress into the lumen of the shaft, the distal end surface defining a distal stop for the stylet such that a tip of the stylet engages the distal end surface, and further wherein the inflatable structure, when deflated about the reduced diameter region, is sized to, fit through the lumen of the cannula. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method comprising:
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establishing an access path to a bone; driving an inflatable structure through the access path using an elongate shaft, wherein the shaft includes a smooth outer surface along an entire length of the shaft, a primary region and a reduced diameter region positioned at least partially within the inflatable structure, a proximal end region of the inflatable structure being coupled to a distal end region of the primary region and a distal end region of the inflatable structure being coupled to the reduced diameter region, the elongate shaft comprising a transition portion between the primary region and the reduced diameter region, the transition portion being tapered continuously between the primary region and the reduced diameter region, the distal end region comprising a completely closed distal end configured to prevent unwanted material ingress into a lumen defined by an inner surface of the elongate shaft; inserting a stylet into the lumen and moving the stylet distally until a tip of the stylet engages the closed distal end; inflating the inflatable structure to manipulate the bone; deflating the inflatable structure about the reduced diameter region; and withdrawing the inflatable structure through the access path.
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Specification