摘要:
One embodiment of a hollow spinal spacer (10) includes a curved anterior wall (11) having opposite ends (12, 13), a posterior wall (15) having opposite ends (16, 17), two lateral walls (20, 21), each integrally connected between the opposite ends (12, 13, 16, 17) of the anterior (11) and posterior (15) walls to define a chamber (30). The walls (11, 15, 20, 21) include a superior face (35) and an inferior face (40). The superior face (35) defines a first opening (36) in communication with the chamber (30) and includes a first vertebral engaging surface (37). The inferior face (40) defines a second opening (41) in communication with the chamber (30) and includes a second vertebral engaging surface (42).
摘要:
Devices and methods include an anchor assembly engageable to a vertebra and a connecting element positionable through a receiver of the anchor assembly. The receiver includes chamfered surfaces along a leading end of the receiver to facilitate endwise insertion of the connecting element into the passage.
摘要:
Devices and methods to restore the disc height between adjacent vertebral members. The methods use a variety of different spacers that are each positionable between a first orientation having a reduced height and a second orientation having an enlarged height. The spacer is initially placed within the disc space in the first orientation. The spacer is then expanded to the second enlarged orientation to restore the disc height. While the spacer is expanded or while it is expanding, the material is inserted into the disc space. In one embodiment, the material is initially in a first flowable form that fills the disc space. After the material is inserted, it becomes more viscous to support the vertebral members. At this time, the spacer is returned to the first orientation and removed from the disc space. The material remains within the disc space to permanently maintain the disc height.
摘要:
A method for accessing the spine includes making an incision in the skin of a patient. The skin and tissue can be dilated, and a cannula inserted through the dilated skin and tissue. The cannula includes a distal end positioned adjacent a first working space that includes paraspinous tissue. The cannula can be repositioned through the incision to a second working space adjacent the distal end of the cannula.
摘要:
A system for managing trading orders comprises a memory operable to store a first trading order for a particular trading product, wherein the first trading order comprises a display portion and a reserve portion and is received from a first trader. The memory is further operable to store a second trading order for the particular trading product, wherein the second trading order comprises a display portion and a reserve portion and the second trading order is received from a second trader after the first trading order. The system further comprises a processor communicatively coupled to the memory and operable to receive from a counterparty trader a counterorder for the trading product. The processor is further operable to use the counterorder to fill the display portion of the first trading order. The processor is further operable to use the counterorder to fill the display portion of the second trading order. After filling the display portion of the second trading order, the processor is further operable to exclusively offer at least a portion of the counterorder to the first trader for a configurable period of time.
摘要:
Techniques and systems for distracting a spinal disc space and supporting adjacent vertebrae are provided. Trial instruments are insertable into the disc space to determine a desired disc space height and to select a corresponding implant. Implants can be also be self-distracting and the implant providing the desired disc space height can be implanted in the spinal disc space.
摘要:
A system for managing trading orders comprises a memory operable to store a trade credit associated with a trader. The system further comprises a processor operable to receive a trading order from the trader and determine the trade credit associated with the trader. If the received trading order is a passive trading order, the processor is further operable to increase the trade credit and submit the received trading order for execution. If the received trading order is an aggressive trading order, the processor is further operable to calculate a decrease of the trade credit. If subtracting the calculated decrease from the trade credit would not cause the trade credit to be less than a configurable threshold, the processor is further operable to submit the received trading order for execution and subtract the calculated decrease from the trade credit. If subtracting the calculated decrease from the trade credit would cause the trade credit to be less than the configurable threshold, the processor is further operable to prevent the execution of the received trading order.
摘要:
A system for managing trading orders comprises a memory operable to store a trader list that is associated with a first trader and that designates one or more other traders. The system further comprises a processor communicatively coupled to the memory and operable to receive a trading order from the first trader. The processor is further operable to transmit the trading order to a plurality of traders, wherein the plurality of traders does not comprise any of the one or more designated traders from the trader list. The processor is further operable to prevent the transmission of the trading order to the one or more designated traders.
摘要:
A system for managing trading orders comprises a memory operable to store a trader list that is associated with a first trader and that designates one or more other traders. The system further comprises a processor communicatively coupled to the memory and operable to receive a trading order from the first trader, wherein the trading order is for an order quantity of a first trading product. The processor is further operable to determine a first portion and a second portion of the order quantity. The processor is further operable to disclose the first portion of the order quantity to a plurality of traders. If a configurable condition is satisfied, the processor is further operable to disclose the second portion of the order quantity to one or more traders that are not designated by the trader list and to prevent the disclosure of the second portion of the order quantity to the one or more designated traders from the trader list.
摘要:
Systems and methods of trading items on an electronic trading system according to the invention are provided. The embodiments of the invention are based at least in part on a new order type. The new order type is a modification of a conventional good-until bettered order type. A good-until-bettered bid/offer is received along with instructions that specify a good-until-bettered increment value and/or duration. The good-until-bettered order is maintained in the electronic trading system until a bid/offer that is better by the specified plurality of standard trading increments is received by the electronic trading system and/or remains in the system for the good-until-bettered duration.