Apparatus and methods for the penetration of tissue, and the creation of an opening therein
First Claim
Patent Images
1. An instrument for the penetration of tissue, comprising:
- (a) a backstop assembly having a shaft and a backstop; and
(b) a penetration member slidingly engaged with said backstop shaft, and configured for penetrating tissue;
said backstop assembly and said penetration member configured such that said backstop may be positioned adjacent tissue to be penetrated, such that as said penetration member is urged through the tissue along said backstop shaft, said backstop will limit the depth of penetration of said penetration member through the tissue.
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Accused Products
Abstract
An instrument for the penetration of tissue, including a backstop assembly having a shaft and a backstop; and a penetration member slidingly engaged with the backstop shaft, and configured for penetrating tissue. The backstop assembly and the penetration member are configured such that the backstop may be positioned adjacent tissue to be penetrated, such that as the penetration member is urged through the tissue along the backstop shaft, the backstop will limit the depth of penetration of the penetration member through the tissue. A method of using this instrument is also provided.
246 Citations
39 Claims
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1. An instrument for the penetration of tissue, comprising:
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(a) a backstop assembly having a shaft and a backstop; and (b) a penetration member slidingly engaged with said backstop shaft, and configured for penetrating tissue; said backstop assembly and said penetration member configured such that said backstop may be positioned adjacent tissue to be penetrated, such that as said penetration member is urged through the tissue along said backstop shaft, said backstop will limit the depth of penetration of said penetration member through the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A trocar for penetrating the tissue wall of an anatomical cavity, comprising:
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(a) a cannula; (b) a backstop assembly having a backstop, said backstop assembly positioned at least partially within said cannula; and (c) a cutting blade assembly slidably positioned at least partially within said cannula; wherein said backstop may be urged through a tissue wall into an underlying anatomical cavity, and thereafter a distal end of said cutting blade assembly may be urged through the tissue wall towards said backstop. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30)
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31. A method of penetrating the tissue wall of an anatomical cavity, comprising:
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(a) positioning a backstop within the anatomical cavity; (b) urging a penetration member through the tissue wall of said cavity towards said backstop. - View Dependent Claims (32, 33, 34, 35, 36, 37)
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38. A method of penetrating the wall of an anatomical cavity, comprising:
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(a) providing a backstop positioned at one end of a backstop shaft, and a penetration member; (b) urging at least a portion of said backstop shaft through said wall such that said backstop is positioned within said anatomical cavity, said wall having exterior and interior surfaces; (c) providing traction on said backstop shaft so that said backstop is urged against the interior surface of said wall, thereby delineating the location of said interior surface of the wall; and (d) urging said penetration member through said wall, while directing the depth of penetration by means of said backstop. - View Dependent Claims (39)
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Specification