| 摘要 |
Discectomy kits with obturator, guard cannulas are provided. The kits have a safe and efficient cutting heads for removing a target tissue from a subject during a surgical procedure are provided, the cutting heads composing a part of systems that address several problems, including clogging of state-of-the-art systems during removal of such tissue, for example. The target tissue can include any tissue that is accessible through a small surgical opening, for example, a joint tissue such as a meniscus or an intervertebral tissue, such as a nucleus pulposus. The devices can be referred to as orthopedic tissue removal devices having cutting heads associated with vacuum systems, making the systems useful in several procedures, including X-LIF (lateral approach to an intervertebral fusions) procedures, T-LIF (transforaminal approach to intervertebral fusions) procedures, P-LIF (posterior approach to intervertebral fusions), and a percutaneous, transforaminal approach (Kambin triangle access). |
| 主权项 |
1. A surgical tissue removal kit, comprising:
a tubular cutting head for removing a tissue from a subject, including:
a tube having an outer perimeter with a distal end, the outer perimeter circumscribing a lumen through the cutting head, the lumen having a central axis and in an operable communication with an at least substantially rigid tube; and,a cutting surface on the distal end of the outer perimeter, the cutting surface including a blade guard projecting distal to the cutting surface to protect a perimeter tissue from the cutting head during a removing of the nucleus pulposus of the subject;wherein, the blade guard includes
a first laterally-directed cutting surface pointing away from a plane that geometrically bisects the blade guard and the central axis; and,a second laterally-directed cutting surface opposing the first laterally-directed cutting surface and pointing away from the plane that geometrically bisects the blade guard and the central axis;and, wherein each of the first laterally-directed cutting surface and the second laterally-directed cutting surface include an apex pointed away from the plane that geometrically bisects the blade guard and the central axis. and, an obturator, guard cannula to protect a subject during entry and exit of the surgical tissue removal system, the guard cannula comprising:
an entry hub having an inner perimeter, an outer perimeter, and an irrigation port that communicates between the inner perimeter with the outer perimeter; and,a linear, elongated split-tube having a proximal end, a distal end, and a lumen;wherein, the proximal end of the split-tube circumscribes at least a portion of the inner perimeter of the hub; and, is in operable communication with the irrigation port, operable to receive an irrigation fluid from the irrigation port, the transport of the irrigation fluid to a target tissue including a movement of the irrigation fluid from the irrigation port to the distal end of the split-tube on a luminal surface of the split-tube; the distal end of the split-tube is at least substantially blunt to avoid damage to an entry tissue upon contact of the distal end with the entry tissue; the split-tube has a length ranging from about 10 cm to about 60 cm and a width ranging from about 5 mm to about 16 mm; and, the split in the split-tube composes a gap having a width ranging from about 4 mm to about 14 mm, the split accommodating a non-linearity in the surgical device. |
