12 results about "Bone tunnel" patented technology

The application provides a kind of extrusion nail and its assembly for orthopedics, which is applied to the technical field of orthopedic surgical instruments.The extrusion nail adopts a threadless structure and is composed of a nail body, a barb and an extrusion groove, and can be adapted to different length bone tunnels through the head-to-tail matching of multiple nails.The assembly includes an execution end and an impact handle, which can provide linear impact force to realize the linear implantation of the extrusion nail.The application replaces the rotary screwing with linear advancement, fundamentally avoiding the shearing and torsional injury of ligaments, and has the advantages of precise implantation, convenient operation and stable fixation, which meets the clinical needs of orthopedic ligament reconstruction surgery and improves the safety of surgery and the quality of postoperative healing.

Various methods and devices are provided for a graft fixation device for fixing a graft member within a bone tunnel. In one embodiment, a graft fixation device is provided having a radially expandable sheath adapted to be disposed within a bone tunnel, and a sheath expander adapted to be received within the radially expandable sheath to expand the sheath and thereby anchor a graft between the sheath and the bone tunnel. In an exemplary embodiment, the graft fixation device is particularly useful to affix a graft within a femoral tunnel.

The present invention relates to a rupturing tool for surgical interventions and to a rupturing system comprising the rupturing tool and a rupturing movement generator device. The rupturing tool and system are intended for the field of traumatology, particularly for the creation of bone tunnels suitable for the proper anatomical reconstruction of tendons and ligaments; for example, for the creation of bone tunnels in interventions for reconstructing the anterior cruciate ligament (ACL) of the knee joint and in interventions for repairing the supraspinatus tendon of the shoulder joint.

The application discloses a surgical guiding device for orthopedics. The positioning member comprises a front section and a rear section which are sequentially connected from front to back, and the rear end of the front section and the front end of the rear section are fixedly connected. The sliding member is slidably installed on the rear section of the positioning member through a guide rail, and is provided with a scale from the front end to the rear end. The locking member is arranged on the positioning member, and the sliding member is locked at a selected position on the positioning member. The device allows flexible adjustment of the drilling position through the sliding member in vitro, and realizes precise drilling of parallel double bone tunnels of the glenoid cavity through a small incision. The device has the advantages of simple operation, small trauma, accurate positioning and the like, is suitable for improving the alignment accuracy of the bone tunnel and the success rate of the surgery in the shoulder glenoid bone grafting surgery, and greatly simplifies the operation steps.

This utility model discloses a bone tunnel length measuring device for total internal cruciate ligament reconstruction surgery, relating to the field of medical device technology. It includes a guidewire, one end of which is a traction end, and the other end is fixedly connected to a limiting measuring bead. A groove measuring device has a bent hole at one axial end, with the other end of the bent hole extending to the side wall of the groove measuring device. The bent hole at the end of the groove measuring device is for guidewire insertion, and the other end of the bent hole is for guidewire exit. The outer wall of the groove measuring device has graduation lines, and the guidewire has a tail end mark. This utility model is a bone tunnel length measuring device for total internal cruciate ligament reconstruction surgery. After the half-length tunnels on both sides are fabricated, this device can be introduced to accurately measure the actual coarse tunnel length, thereby solving the problem of inaccurate calculation of the sum of A+B+C in clinical practice. It can accurately verify the length of the woven tendon and the bone tunnel.

The present invention relates to a medical fastening device for the fastening of grafts, wherein the medical fastening device is suitable for being inserted in a bone tunnel of a bone, and wherein said medical fastening device comprises a first fastening element and a second fastening element. The invention also describes a system for inserting the medical fastening device of the present invention and a second alternative medical fastening device for the fastening of a graft

The application discloses a surgical method for the reduction and fixation of a posterior cruciate ligament tibial insertion avulsion fracture under the guidance of ultrasound, and is especially suitable for the reduction treatment of a posterior cruciate ligament tibial insertion avulsion fracture. The surgical method comprises the following steps: acquiring fracture information of a patient by means of an ultrasonic positioning device, wherein the fracture information at least comprises position information of a fracture block; planning a surgical path according to the fracture information, wherein the surgical path extends from the body surface of the patient to the fracture block; placing a guide needle along the surgical path, wherein the distal end of the guide needle is arranged close to the fracture block; placing a cannula device along the guide needle, wherein the distal end of the cannula device is arranged close to the fracture block, a working channel is formed in the cannula device, and the guide needle is accommodated in the working channel; performing a reduction operation on the fracture block; making a kirschner wire pass through the working channel and temporarily position the fracture block; opening at least two bone tunnels in a main bone adjacent to the fracture block by means of a drilling device; making a suture thread pass through the at least two bone tunnels; and fixing the two ends of the suture thread.

This invention relates to an interface screw, comprising a screw head, a screw shaft, and a screw tip connected sequentially along the axial direction. The screw shaft has a first threaded section and a helical fixing structure. One end of the first threaded section extends to the screw head. The helix of the helical fixing structure extends from the other end of the first threaded section toward the screw tip along the helical extension line of the first threaded section. The helical fixing structure includes multiple fixing parts, which are spaced apart along the helix of the helical fixing structure. When implanted into a bone tunnel, the spaced-apart fixing parts of this invention can reduce rotational friction on the ligaments, thereby reducing ligament damage. After implantation into the medullary tract, the uneven compressive force exerted on the ligaments by the bonding forces between the multiple fixing parts and the bone makes it easier for the ligaments to embed into the bone within the bone tunnel, improving the ligament fixation effect.

An anchor inserter has at least one elongated shaft configured to be pushed into a bone tunnel; a distal end of the shaft includes an anchor-bearing portion located at the distal end of the shaft, wherein a proximal end of the shaft is fixedly attached to an attachment portion of an inserter body at an attachment position; wherein the attachment portion of the inserter body further includes at least one opening located adjacent to the attachment position, the opening being configured to receive a guide wire therein.

The utility model relates to a straight-drilling automatic loop-turning type looped titanium plate implanting device, which comprises a handle, a loop-turning outer rod, a loop-turning inner rod, a loop-turning button and a looped titanium plate. The loop-turning outer rod is of a hollow tubular structure and is arranged at the head end of the handle and communicated with the handle. A coaxial channel of the loop-turning outer rod is arranged inside the handle. A connecting piece for connecting with an external power source is arranged at the rear end of the handle. The loop-turning inner rod comprises a driving component at the rear end and a top rod fixedly connected with the driving component. An escape opener is arranged at one end of the top rod far away from the driving component. The loop-turning button extends into the coaxial channel through a chute opened on the handle and is fixedly connected with the driving component on the loop-turning inner rod. The front end of the looped titanium plate is set as a drill bit structure for drilling into bone tissue to form a bone tunnel. A plurality of through holes are arranged along the thickness direction of the looped titanium plate. Through the cooperation of each component, the implanting device can integrate the functions of direct drilling and automatic loop-turning, the implanting process is simple, and it is more convenient for minimally invasive operation during the operation.

A system for assisting in real time in the production of at least one bone tunnel by arthroscopy in a joint of a patient, including an imaging device able to acquire two-dimensional images of portions of the joint of the patient, a first monitoring device and a programmable device.

The present invention provides a bone punch tool and method for forming a bone tunnel in a target bone. The bone punch tool is configured to remove a bone plug from the target bone. Removal of the bone plug allows for the formation of a bone tunnel in the target bone. The bone punch tool comprises an impact handle and a punch head having a bore. The punch head has a cutting end with cutting blades disposed around the bore. The bone punch tool can be used to retrieve the bone plug without leaving any bone drilling debris. Furthermore, the bone plug can be retrieved as a solid graft and used as a graft in another body location to promote healing and reduce post-operative recovery time.