261 results about "Knot tying" patented technology

An instrument for surgical suturing includes a shaft, and a needle disposed slidably for longitudinal travel with respect to the shaft. A prong formed on one end of the shaft projects across a longitudinal axis of the needle and has an opening formed through the prong that provides a clearance through which a tip portion of the needle passes when it is advanced. Slots formed on a surface of the prong facing the shaft releasably hold suture across the opening. Advancing the needle through the clearance allows a hook formed on the tip of the needle to capture the suture. Once withdrawn, the needle draws the suture back through tissue pierced during advancement. The suture is released from the slots and drawn back through the tissue for further knot tying and suturing to effect the tissue repairs.

Embodiments of a suturing device and methods of suturing are disclosed. The device comprises an arcuate needle, a plurality of one way gate mechanisms radially spaced around a portion of the arcuate needle, where each one way gate mechanism engages the needle in one direction, and a driving means for driving the plurality of one way gate mechanism around a portion of the needle such that the needle is incremented along a rotational direction.

A suture locking device including an adapter for insertion into a body. The adapter has a proximal end, an open distal end and a lip within the distal end projecting towards an interior of the open distal end. The device further includes a knot tying element releasably attached to the distal end of the adapter. The knot tying element has a distal and a proximal end. The proximal end of the knot tying element has a recess thereon. The proximal end of the knot tying element is inserted within the open distal end of the adapter such that the lip and the recess mate with each other to form a releasable lock.

An instrument and method for suturing wound closures is provided having a handle, shaft and suture engagement mechanism. The instrument provides for multiple placements or “bites” of suture in tissues to enable a wide variety of suturing techniques, including the ability to “run” a suture. The instrument further facilitates suture knot tying. The method of this instrument provides for rapid and effective remote suture placement and knot tying.

Systems and methods for bone to bone, or soft tissue to bone, repairs without knot tying. The repair systems include self-cinching constructs which are tensionable and which include a flexible strand with a knotless, adjustable loop with at least one splice and a shuttle/pull device attached to the flexible strand. A final splice is formed by pulling on the shuttle/pull device subsequent to the knotless, adjustable loop being assembled with or secured to tissue (for example, a soft tissue graft or BTB graft), to allow desired tensioning of the graft to be fixated relative to the bone.

Apparatus for needle grasping and performing a second modality comprising a sheath axially extending between distal and proximal ends thereof. The device includes an inner hollow tube with a slot formed therein for receiving a needle at the distal end. Retraction and extension of the inner tubular member relative to the sheath enable the grasping and releasing of a suture needle received in the slot. A handle is provided at the proximal end of the apparatus for selectively extending and retracting the inner tube relative to the sheath and for retaining the inner tube in its extended and retracted positions. A second switch can be provided in the handle to actuate a catheter slidably inserted through the inner tube to perform a second therapeutic modality. The catheter preferably includes a distal bight that forms a loop when extended from the distal end of the sheath for facilitating intracorporeal knot tying thereat. The catheter includes a lumen therethrough for receiving suture thread for use at the distal end of the sheath.

An instrument and method for suturing wound closures is provided having a handle, shaft and suture engagement mechanism. The instrument provides for multiple placements or “bites” of suture in tissues to enable a wide variety of suturing techniques, including the ability to “run” a suture. The instrument further facilitates suture knot tying. The method of this instrument provides for rapid and effective remote suture placement and knot tying.

A fully threaded, bioabsorbable suture anchor with a suture loop that is disposed internally within the suture anchor. The suture loop is insert-molded into the anchor. The fully threaded design provides improved fixation, while the insert-molded internal suture loop serves as a recessed eyelet for a second (knot-tying) suture.

Systems and methods for soft tissue to bone repairs, without knot tying. The soft tissue repair includes the steps of (i) securing first and second knotless fixation devices in bone, wherein the first fixation device is provided with a first loop and a first set of tails extending therefrom, and wherein the second fixation device is provided with a second loop and a second set of tails extending therefrom; (ii) passing one tail of the first fixation device through the second loop of the second fixation device; (iii) passing one tail of the second fixation device through the first loop of the first fixation device; and (iv) securing the first set of tails with a third fixation device and the second set of tails with a fourth fixation device.

A device for holding open and facilitating the filling of a trash bag with leaves, grass, debris or the like is provided. The device is comprised of a frame including a top wall, a bottom wall and at least one set of opposite side walls, and further including entry and exit ends having a hollow interior area extending therebetween. The sidewalls are provided with holes therethrough proximate entry end, the holes having corresponding slits. The frame is configured to receive on its exit end a specially configured trash bag having two knots tied within the opening edge of the bag. The bag is placed upon the exterior of the exit end of the frame and pulled toward entry end so that the knots of the bag line up with the holes in the sidewalls. The knots are pulled through the holes and retained in the corresponding slits such that the bag is securely retained on the frame which maintains the bag in a fully open position on the ground or floor surface so as to facilitate sweeping or raking grass, leaves, garbage and other debris or the like into the bag. The frame is also provided with a handle to facilitate holding and transporting the frame.

An instrument for arthroscopic suture passing having a shaft with a proximal end and a distal end. A jaw disposed on the distal end has a needle and a hook. The jaw opens and closes with respect to a stationary distal tip of the instrument. A handle disposed on the proximal end manipulates the jaw. A movable suture shuttle is disposed in the distal tip of the instrument. Arthroscopic suture passing takes place by initially loading a length of suture into the suture shuttle, and capturing the suture by moving the suture shuttle away from a position in which it would engage the needle and hook. The needle then is advanced through tissue using the handle to close the jaw against the stationery tip. The suture shuttle then is advanced to load the suture onto the hook. Opening the jaw draws the needle back through the tissue, pulling the suture in a loop through the tissue. A spring arm urges tissue off of the needle. The loop of suture then is available for further suturing or knot tying.

A knot-tying assist device allows a physician to remotely tie and cinch a knot in two ends of a suture extending from an incision in a vessel or organ of a patient in order to seal an opening in the vessel or organ. The knot-tying assist device includes a first receiving portion and a second receiving portion spaced apart along the device for receiving and holding the two ends of the suture. The receiving portions may hold the suture ends loosely, or alternatively may hold the suture ends under tension to facilitate tying the knot. The knot-tying device further includes an engagement portion to stabilize the knot-tying assist device relative to the treatment location. The engagement portion may assist in maintaining tension on the two suture ends so that the suture can hold the incision closed prior to the knot being tied and cinched.

An article of jewelry is disclosed wherein a stretchable filament is threaded through or otherwise attached to a desired number of ornaments and maintained in loop form by a knot tied in the filament. The filament is formed of a material that may be stretched between two extremes: a minimally stretched length and a fully stretched length. The filament further has a relaxed length that is less than the fully stretched length. The filament is selectively adjustable in that the relaxed length may be adjusted upward but not downward. Also disclosed is a method for tying a symmetric, sturdy knot in the stretchable filament that includes the step of simultaneously pulling with substantially equal force on each of the trailing ends exiting the knot in such a way that a portion of the filament including the knot is stretched to or almost to its fully stretched length.

The invention discloses an intelligent kelp automatic knot tying machine, which comprises a base, and an automatic feeding mechanism, a knot tying feeding mechanism, an enwinding mechanism, a knot tying mechanism, a material cutting mechanism and a PLC microcomputer control system controlling the interworking of the mechanisms, which are arranged on the base. The automatic feeding mechanism is provided with a first camping jaw. The knot tying feeding mechanism is provided with a second clamping law. The material cutting mechanism is provided with a cut-off tool. The knot tying mechanism is provided with a third clamping jaw. The enwinding mechanism is provided with a fourth clamping jaw. Under the control of the PLC microcomputer control system, the mechanisms interwork, replace manpower and complete a series of kelp knot tying processes of feeding material, enwinding, clamping, cutting, feed-in, tying knot, stripping material and the like. Consequently, the knot tying efficiency of the kelp is improved greatly, the knot typing quality of kelp knots is ensured and the complex mechanical transmission mechanism is avoided. The invention has the advantages of reasonable structure, high efficiency, low fault rate, convenient adjustment and extensive use foreground.

A device for precisely spacing knots in a string that includes: a generally flat, rectangular board; a centered post projecting outwardly of and generally perpendicular to the board and for enabling tying the free end of the string about the post and enabling forming knots in the string upon tightening of same; and, a plurality of selectable measurement points on the board, aligned longitudinally, transversely of the board and extending outwardly from the post in equi-distantly spaced relation and for enabling positioning a predetermined point along the string at one of the selectable measurement points, the spacing between the string predetermined point and a knot formed at the post being determined by the spacing between the post and the selected measurement point. In use, a pre-determined point along the string is placed on the board at one of the selectable measurement points. The free end of the string is tied about the post. The free end of the string is pulled tightly to form a knot at the post. The spacing between the string predetermined point and the knot formed at the post is determined by the spacing between the post and the selected measurement point. The method is used in forming jewelry by interspersing beads between knots whose positions have been pre-selected, using the device and technique previously set forth.

A plurality of twine tensioner arms are mounted at evenly spaced locations across the baling chamber of a large square baler for pivoting vertically, against a yieldable bias, between upper and lower extreme positions. Each tensioner arm carries a tensioned twine strand associated with a double-knot tying device. A rotary potentiometer is coupled, by a follower arm, for sensing pivotal movement of each tensioner arm and sends out a corresponding electrical signal to an electronic controller which processes the sensed arm position together with other stored information and sends out a signal for energizing a display showing the relative positions of the arms and/or for energizing a warning device for apprising an operator that a mistie has occurred, is about to occur or that a twine tensioner setting has to be changed.

A lace or draw string fastening system can include a clamping unit and a capture element. The clamping unit can clamp onto the laces, such as shoe laces, to tighten the shoes and the capture element can capture and contain the free ends of the laces that extend from the clamping unit to prevent tripping by securing them to other portions of the laces or the article that houses the laces. The fastening system can be used in a shoe lace fastening system without the need for knot tying. The clamping unit can clamp the laces together at the top of the shoe to hold the laces tight while the capture element can contain or secure the free ends of the shoe lace to the shoe or the laces adjacent the toe to prevent tripping.