Dilation introducer for orthopedic surgery
First Claim
1. In a dilation introducer for surgery on an internal body structure, the dilation introducer having a locked assembled configuration for initial placement of the dilation introducer against a patient'"'"'s bone tissue to be treated, and an unlocked, collapsed configuration dilating the patient'"'"'s soft tissue down to the tissue to be treated to a desired degree of dilation to permit minimally invasive surgical procedures on the patient'"'"'s tissue to be treated, the improvement in the dilation introducer comprising:
- at least one dilator tube having a distal end and a proximal end, the distal end of the at least one dilator tube including a plurality of spikes.
2 Assignments
0 Petitions
Accused Products
Abstract
The dilation introducer has a locked assembled configuration for placement of the dilation introducer against a patient'"'"'s tissue to be treated, and an unlocked, collapsed configuration for dilating the patient'"'"'s soft tissue down to tissue to be treated. Dilator tubes are successively released and advanced to progressively expand the patient'"'"'s soft tissue down to the bone tissue to be treated. The dilator tubes and a guide insert may include spikes for engaging bone tissue. The dilation introducer may include a light emitter disposed in a dilator tube. A telescoping expander sleeve is also provided.
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Citations
23 Claims
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1. In a dilation introducer for surgery on an internal body structure, the dilation introducer having a locked assembled configuration for initial placement of the dilation introducer against a patient'"'"'s bone tissue to be treated, and an unlocked, collapsed configuration dilating the patient'"'"'s soft tissue down to the tissue to be treated to a desired degree of dilation to permit minimally invasive surgical procedures on the patient'"'"'s tissue to be treated, the improvement in the dilation introducer comprising:
at least one dilator tube having a distal end and a proximal end, the distal end of the at least one dilator tube including a plurality of spikes. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A dilation introducer for surgery on an internal structure to be treated, the dilation introducer having a locked assembled configuration for initial placement of the dilation introducer against a patient'"'"'s tissue to be treated, and an unlocked, collapsed configuration dilating the patient'"'"'s soft tissue down to the tissue to be treated to a desired degree of dilation to permit minimally invasive surgical procedures on the patient'"'"'s tissue to be treated, comprising:
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a first dilator tube having a distal end with a tapered tip and a proximal end with a cylindrical head;
a second dilator tube, the first dilator tube being removably received in the second dilator tube for slidable telescoping movement within the second dilator tube, the second dilator tube having a distal end with a tapered tip and a proximal end with a cylindrical head, and an inner lumen with a distal opening and a proximal opening; and
means for removably connecting the first and second dilator tubes together in a locked configuration including a first latching member disposed in the cylindrical head of the first dilator tube, the first latching member having locking button connected transversely to a shaft with a latching end projecting from the cylindrical head of the first dilator tube toward the distal end of the first dilator tube, the locking button extending transversely from the shaft through a side aperture in the cylindrical head of the first dilator tube, the locking button being biased outwardly from the cylindrical head, the first latching member being received in an upper aperture of the cylindrical head of the second dilator tube, the upper aperture of the cylindrical head of the second dilator tube having a latching chamber for retaining the latching end of the latching member when the locking button is biased outwardly, to lock the cylindrical heads of the first and second dilator tubes together, the locking button being moveable inwardly to move the latching member inwardly and the latching end of the latching member inwardly out of the latching chamber. - View Dependent Claims (8, 9)
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10. In a dilation introducer for orthopedic surgery, the dilation introducer having a locked assembled configuration for initial placement of the dilation introducer against a patient'"'"'s tissue to be treated, and an unlocked, collapsed configuration dilating the patient'"'"'s soft tissue down to the tissue to be treated to a desired degree of dilation to permit minimally invasive surgical procedures on the patient'"'"'s tissue to be treated, the improvement in the dilation introducer comprising:
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at least one dilator tube having a tubular shaft, a distal end and a proximal end, an inner lumen with a distal opening and a proximal opening; and
a light emitter disposed in said at least one additional dilator tube. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A telescoping expander sleeve adapted to be slidably disposed over a shaft of a dilator tube for dilating a patient'"'"'s soft tissue down to tissue to be treated to a desired degree of dilation to permit minimally invasive surgical procedures on the patient'"'"'s tissue to be treated, the telescoping expander sleeve being moveable between an extended, unexpanded configuration and a collapsed, expanded configuration, the telescoping expander sleeve comprising:
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a first generally tubular section having a tubular proximal portion and a distal portion, the tubular proximal portion having an enlarged proximal head, and the distal portion including at least two active spreader arms each having a proximal end and a distal tip, said at least two active spreader arms being connected at the proximal end, respectively, to the tubular proximal portion, said distal tips of said at least two active spreader arms being moveable radially between an unexpanded configuration and an expanded configuration;
a second generally tubular section slidably disposed over the first generally tubular section, said second generally tubular section including a tubular proximal portion and a distal portion including at least two passive spreader flaps each having a narrow proximal end and a wide distal tip, said proximal ends of said at least two passive spreader flaps being hingedly connected to said tubular proximal portion, said distal tips of said at least two passive spreader flaps being moveable radially between an unexpanded configuration and an expanded configuration, said at least two active spreader arms slidably engaging said at least two passive spreader flaps, so that as the telescoping expander sleeve telescopes from the extended, unexpanded configuration to a collapsed, expanded configuration, said at least two active spreader arms slide from the narrow proximal ends of said at least two passive spreader flaps to the wider distal ends of the passive spreader flaps to spread the distal ends of said at least two passive spreader flaps apart and to spread the distal ends of said at least two active spreader arms apart. - View Dependent Claims (20, 21)
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22. A guide wire assembly for use with a telescoping dilation introducer in treatment of soft tissue, to provide a surface against which the telescoping dilation introducer can be pushed during operation of the telescoping dilation introducer, comprising:
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an elongated tubular section having a proximal end, a distal end, an internal bore, and a frustoconical distal tip with a narrowed portion at the distal end and an enlarged flat shoulder at a proximal portion of the frustoconical distal tip; and
an elongated generally cylindrical section removably received in said internal bore of said elongated tubular section, the elongated generally cylindrical section having a proximal enlarged head and an elongated body portion, said elongated body portion having a proximal end and a distal end, said distal end having a pointed distal tip, such that when said elongated generally cylindrical section is received in said elongated tubular section, said pointed distal tip extends out of the distal end of said frustoconical distal tip to present a sharp point that can be positioned in soft tissue, and such that when said elongated generally cylindrical section is thereafter removed, said enlarged flat shoulder of said frustoconical distal tip provides a surface against which a telescoping dilation introducer can be pushed for operation of the telescoping dilation introducer in treatment of soft tissue. - View Dependent Claims (23)
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Specification