5 results about "Trochanter" patented technology

The application discloses a prosthesis system for minimally invasive femoral head replacement, which comprises a bone cutting assembly, a prosthesis, an extension rod, a guide frame and a locking nail. In the operation, only a small opening is needed on the lateral side of the femoral neck, and then a channel is established, and the prosthesis is implanted in the channel, so that the degree of trauma, the operation time and the blood loss are greatly reduced. A detachable extension rod is arranged on the implanted prosthesis, and after the extension rod is positioned by cooperating with the guide frame, the extension rod can guide the path of the locking nail, so that the locking nail is connected with the prosthesis, and is fixed with the large and small trochanters of the patient, so that the prosthesis can be combined with the relatively hard bone and the surface layer of the femoral neck to achieve stable combined support and avoid loosening of the prosthesis.

The utility model relates to a femoral trochanter vertex auxiliary needle inserting device which comprises a positioning body (1), a needle inserting opening (2) is formed in the top face of the positioning body (1), and a needle inserting channel (3) corresponding to the needle inserting opening (2) is formed in the positioning body (1) in a penetrating mode in the needle inserting direction. And the bottom surface of the positioning body (1) is an inner concave curved surface (4) which fits the radian of the vertex of the greater thighbone tuberosity. Compared with the prior art, the auxiliary needle inserting device for the femoral trochanter top can assist in positioning the needle inserting point of the femoral trochanter top, and directional needle inserting is carried out through the needle inserting channel.

The resettable anti-rotation implant is characterized in that the resettable anti-rotation implant comprises an outer sleeve and a pressurizing rotating shaft, a front screw hole and a rear screw hole are formed in the head and the tail of the outer sleeve respectively, and the thread directions of the front screw hole and the rear screw hole are opposite; the pressurizing rotating shaft is inserted into an inner hole of the outer sleeve and is in threaded connection with a front screw hole and a rear screw hole of the outer sleeve at the same time, a plurality of axial long grooves are formed in the front end of the outer sleeve in the circumferential direction of the outer sleeve and divide the outer sleeve into a plurality of expansion elastic pieces, and the expansion elastic pieces are expanded by rotating the pressurizing rotating shaft. The head and the tail of the outer sleeve horizontally move in the opposite directions at the same time, so that the expansion elastic pieces on the outer sleeve expand outwards at the same time, and the holding force of the outer sleeve on the femoral neck is increased. The femoral head cancellous bone repositor has higher holding force in the bone substance of the femoral head cancellous bone, and can be used for repositioning a fracture separation part in a rotating and push-pull manner.

The invention discloses a hip joint prosthesis system, and relates to the technical field of medical instruments. The hip joint prosthesis system comprises a main prosthesis which is arranged at a bone resection position; the connecting prosthesis is arranged between the acetabulum and the main prosthesis; the hook plate is detachably arranged on the main prosthesis through a connecting assembly, and the inner wall of the hook plate is used for being attached to the outer wall of the greater trochanter; the broach is fixedly arranged at the bottom of the main prosthesis, and the broach is used for being inserted into a medullary cavity; the adjusting assembly is used for adjusting the diameter of the broach. A large number of specifications and different types of prostheses and different instruments for implantation do not need to be prepared in advance, the operation time is shortened, the exposure time of a patient is prevented from being too long, complications such as infection and thrombus are reduced, the bone retention amount in a medullary cavity is greatly increased, the fixing stability of the prostheses after long-time use is prevented from being reduced, and the use safety of the prostheses is improved. Therefore, according to the hip joint prosthesis system, the suitability of the hip joint prosthesis is improved under the condition that a patient is not affected.

This invention provides a fracture treatment fixation device for femoral fractures that can more reliably treat proximal femoral fractures, including cases where the posterior wall portion is not separated. [Solution] A fracture treatment fixation device for treating a femoral fracture, comprising: an intramedullary nail inserted into the femoral cavity; a lag screw positioned to penetrate the intramedullary nail diagonally upward and enter the femoral head and femoral neck; an anterior wall plate applied to the anterior wall of the femoral trochanter; and an anterior wall plate fixing pin positioned to penetrate the intramedullary nail and to fix the anterior wall plate to the anterior wall of the femoral trochanter, wherein the anterior wall plate fixing pin is configured to be screwable into the intramedullary nail.