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AssigneeKyphon Inc.
InventorsMark A. Reiley, Michael L. Reo, Robert M. Scribner, Arthur E. Ferdinand
Estimating the term…
Apparatus and methods provide a tool comprising a trocar and a cannula in which the trocar engages the cannula to form a composite instrument. The trocar includes a handle and a lumen through the trocar and the trocar handle that accommodates passage of a functional instrument, such as a stylet, guidewire, or spinal needle assembly. The cannula includes a handle and is sized and configured to accommodate passage of the trocar. The trocar handle mates with the cannula handle to form a composite handle when the trocar is engaged with the cannula.
A tool comprising:
A method of manipulating an instrument that, in use, accesses bone comprising the steps of
Dependencies are inferred from the claim text.
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Surgical instruments, devices or methods: trocars; Puncturing needles
Trocars; Puncturing needles: details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
For introducing fluid filler into bone or extracting it: characterised by the introducer proximal part, e.g. cannula handle, or by parts which are…
For introducing fluid filler into bone or extracting it: characterised by means facilitating expulsion of fluid from the introducer, e.g. a screw…
Term end not estimated
The invention generally relates to hand-held tools and instruments and to procedures that deploy these instruments through tissue to access interior regions of the body.
There are many different types and styles of handheld surgical instruments that physicians use to gain access into interior body regions. These instruments are intended to penetrate tissue by the application of pushing forces, twisting forces, or both in combination.
Often, a single surgical procedure will require the physician to employ different surgical instruments, each possessing a different shape, size, and function. Often, the procedure will require the physician to deploy these instruments in both soft and hard tissue to meet the diagnostic or therapeutic objectives of the procedure. The physician will often need an enhanced mechanical advantage to advance an instrument through tissue, particularly through dense or hard tissue, such as bone.
FIG. 1 is a perspective view of a first functional instrument engaging a second functional instrument to form a composite tool having a composite handle that the handles of the first and second instruments form.
FIG. 2 is a perspective view of the first instrument separated from the second instrument.
FIG. 3 is a perspective view of a hand engaging the composite handle of the tool shown in FIG. 1.
The invention may be embodied in several forms without departing from its spirit or essential characteristics. The scope of the invention is defined in the appended claims, rather than in the specific description preceding them. All embodiments that fall within the meaning and range of equivalency of the claims are therefore intended to be embraced by the claims.
This Specification describes new instruments for penetrating tissue. This specification also describes systems and methods to treat bones using expandable bodies in conjunction with new instruments for penetrating tissue.
The use of expandable bodies to treat bones is generally disclosed in U.S. Pat. Nos. 4,969,888 and 5,108,404, which are incorporated herein by reference. Improvements in this regard are disclosed in U.S. patent application, Ser. No. 08/188,224, filed Jan. 26, 1994; U.S. patent application Ser. No. 08/485,394, filed Jun. 7, 1995; and U.S. patent application Ser. No. 08/659,678, filed Jun. 5, 1996, which are each incorporated herein by reference.