Percutaneous discectomy system having a bendable discectomy probe and a steerable cannula
First Claim
Patent Images
1. A surgical instrument comprising:
- a probe body;
an elongate probe needle with a longitudinal axis extending from said probe body and an end located distally from said probe body, and having a tissue removing means for removing tissue and an elongate outer tubular body, said elongate probe needle further having;
a first repeatably bendable section in said elongate outer tubular body in order to allow for selective positioning of said cutting means relative to said longitudinal axis,an elongate inner tubular body within said elongate outer tubular body, said elongate inner tubular body including a second repeatedly bendable section, said second repeatably bendable section for allowing selective positioning of said tissue removing means relative to said longitudinal axis,irrigation means for delivering irrigation fluid,aspiration means for removing irrigation fluid and tissue, andwherein said first and second repeatably bendable section allow said tissue removing means to be repeatably positioned to a location away from said longitudinal axis.
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Abstract
A percutaneous discectomy system 20 having a bendable discectomy probe 22 and steerable cannula 24 allows for a wide range of positions relative to the discectomy tissue to be severed. The bendable discectomy probe 22 includes a bendable section 78, 86 which can allow the probe 22 to be bent more than 90° and still maintain the function required in order to sever and remove tissue. The steerable cannula 24 has a similar bendable section 102 which can appropriately position the end 50 of the discectomy probe 22 in order to address tissue to be removed.
916 Citations
27 Claims
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1. A surgical instrument comprising:
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a probe body; an elongate probe needle with a longitudinal axis extending from said probe body and an end located distally from said probe body, and having a tissue removing means for removing tissue and an elongate outer tubular body, said elongate probe needle further having; a first repeatably bendable section in said elongate outer tubular body in order to allow for selective positioning of said cutting means relative to said longitudinal axis, an elongate inner tubular body within said elongate outer tubular body, said elongate inner tubular body including a second repeatedly bendable section, said second repeatably bendable section for allowing selective positioning of said tissue removing means relative to said longitudinal axis, irrigation means for delivering irrigation fluid, aspiration means for removing irrigation fluid and tissue, and wherein said first and second repeatably bendable section allow said tissue removing means to be repeatably positioned to a location away from said longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A surgical instrument comprising:
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a probe body; an elongate probe needle with a longitudinal axis extending from said probe body; said probe needle including means adapted for removing tissue; said probe needle including a repeatably bendable section which is located adjacent to said tissue removing means in order to allow for selective positioning of the tissue removing means in a wide range of positions relative to the longitudinal axis; and said probe needle including a substantially rigid section which is located between said bendable section and said probe body; said elongate probe needle including an outer elongate and hollow cylinder and an inner elongate and hollow cylinder; said outer cylinder including an outer elastic section which comprises in part, said bendable section; and said inner cylinder including an inner elastic section which comprises in part, said bendable section. - View Dependent Claims (20)
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21. A surgical instrument comprising:
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a probe needle having a length and a means for removing tissue; said probe needle having an elongate outer tubular portion, said elongate outer tubular portion having a first repeatably bendable section; said probe needle having an elongate inner tubular portion within said elongate outer tubular portion, said elongate inner tubular portion including a second repeatably bendable section; said first and second repeatably bendable sections allowing the probe needle to provide a variable bend along the length in order to position the removing means. - View Dependent Claims (22, 23, 24)
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25. A surgical instrument comprising:
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a probe body; an elongate probe needle with a longitudinal axis extending from said probe body; said probe needle including means adapted for removing tissue; said probe needle including irrigation means for delivering irrigation fluid; said probe needle including aspiration means for removing irrigation fluid and tissue; said probe needle including a repeatably bendable section which is located between said probe body and said means for removing tissue in order to allow for selective positioning of the tissue removing means relative to the longitudinal axis and through which bendable section passes the irrigation means and the aspiration means; wherein said repeatably bendable section allows said tissue removing means to be repeatably positioned to a location away from the longitudinal axis; said elongate probe needle includes an outer elongate and hollow cylinder and inner elongate and hollow cylinder; said outer cylinder includes an outer elastic section which comprises in part, said bendable section; and said inner cylinder includes an inner elastic section which comprises in part, said bendable section. - View Dependent Claims (26, 27)
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Specification