47 results about "Great Trochanter" patented technology

To provide an impact-absorbing pad fully satisfying impact absorbability for preventing femoral neck fractures, wearing comfort and breathability not to cause discomfort for all-day use, a small thickness not to impair external appearance, and flexibility in a surface direction not to cause uncomfortable feeling at the time of putting on and taking off, which are required for the impact-absorbing pad used in a hip protector, clothing furnished with the impact-absorbing pad, and a method for preventing femoral fractures. A pad main body having impact absorbability includes an impact-deflecting part having a through hole or concavity with a maximum length of 80 mm or less and an area of 600 mm² or more and 5,000 mm² or less, and the pad main body is disposed so as to apply the impact-deflecting part onto the greater trochanter of the femur, thereby preventing femoral fractures.

When people fall they tend to fall on their side. This can lead to them breaking their femur particularly at the head around the trochantheric region. The head of the femur includes a portion called the greater trochanter which projects outwards and which is covered by very little flesh. A pad for use in protecting trochantheric region of the body comprises at least two separate layers, a substantially rigid layer, and a layer of dense, closed-cell resilient foam material. The substantially rigid layer includes a protecting boss which, in use, is located in the region of the greater trochanter to increase the spacing between the outside of the rigid layer and the greater trochanter. Preferably, the layer of closed-cell foam material extends over a greater area than the substantially rigid layer so that the periphery of the rigid layer lies entirely within the periphery of the foam layer.

The present disclosure relates to an implant for refixation of the greater trochanter on which an osteotomy has been performed or which is fractured. The implant comprises a plate that can be fixed on the proximal femur, and a device that can hold the greater trochanter with a form fit or force fit on the femur. This holding device preferably has bendable prongs located at a distance from each other, the first end portion of these prongs being attached to the upper edge of the base plate. The holding device also has flexible, elongate members, each of which is attached at one end to the free end portion of the respective prong. The other, free end portions of the longitudinal members are secured laterally on the base plate after these longitudinal members have crossed the medial aspect of the greater trochanter. This results in a tensioning band construction with at least two restraints based on a plate fixed securely on the proximal lateral femur.

The invention relates to a support body in an expansion fixing whirlbone, which comprises a support main body and an internal expansion bolt, wherein the support main body is sleeved outside the internal expansion bolt; the top part of the support main body is arc-shaped; the support main body is provided with a radial expansion wing; the expansion wing is composed of a plurality of wing fins; an expansion gap is formed between each wing fin; the internal expansion bolt is provided with an expansion section; after the internal expansion bolt is arranged in the support main body, the expansion wing can be opened by the expansion section; and the support main body is in threaded connection with the internal expansion bolt. According to the invention, the support body is fixed below the whirlbone or is fixed in bone tissues around a femoral neck through the expansion of a partial structure after the support body is planted on a predetermined position below the collapsing position of the whirlbone; the support body disclosed by the invention does not need to make cortical bone on the lower part of a whirlbone greater trochanter as support mechanics basis; therefore, the support body can be relatively short so that a osteotomy space between the greater trochanter and a lesser trochanter is kept in a future total hip replacement without taking out the support body deliberately.

The invention discloses a bone connecting device for treating femoral intertrochanteric fracture. The bone connecting device for treating femoral intertrochanteric fracture comprises a bone connecting plate, a circular knife and fixing screws, wherein the bone connecting plate comprises a bone connecting plate upper portion, a bone connecting plate middle portion and a bone connecting plate lower portion which are sequentially connected to one another; the bone connecting plate upper portion is arc-shaped; the bone connecting plate middle portion is obliquely arranged at the lower end of the bone connecting plate upper portion; the outer side of the bone connecting plate middle portion and the outer side of the bone connecting plate lower portion are straight; the bone connecting plate middle portion is thicker than the bone connecting plate upper portion and the bone connecting plate lower portion; a sleeve is arranged on the bone connecting plate middle portion; threads are arranged at the front end of the circular knife; and the rear of the circular knife does not have threads. When the bone connecting device is used, the circular knife is obliquely placed in a femoral head via a femoral neck from a greater trochanter, the threads of the circular knife are fixed in the femoral head, and the rear of the circular knife is slidably connected with the femoral neck and the sleeve; and the bone connecting plate upper portion and the bone connecting plate lower portion are provided with locking screw holes which are locked with the fixing screws in a threaded manner. By the mode, a fracture portion can be compressed, and a fracture line is reduced; and angular stability is high, displacement fracture can be prevented, injury is reduced, and healing on femoral intertrochanteric fracture is facilitated.

The invention discloses a 3D printed femoral head necrosis navigation template and a construction method thereof and use of the navigation template and construction method. The construction method comprises the following steps: acquiring and processing femoral head image data, reconstructing a femoral head three-dimensional model, positioning a target area on the femoral head three-dimensional model, digitally generating a virtual navigation template, and performing 3D printing on the navigation template to obtain a navigation base template which can be accurately matched with a femoral head greater trochanter area and a navigation tube with an optimal needle insertion angle and direction. The femoral head necrosis navigation template obtained on the basis of the three-dimensional reconstruction and 3D printing can be visually applied to operation navigation of an operation, effectively reduces radiation injuries and wounds to a patient, and is convenient for an operator to master, operate and perform technology promotion.

The invention discloses an auxiliary device for intramedullary fixation of femoral intertrochanteric fracture. The auxiliary device comprises a fixation bone plate; the proximal end of the fixation bone plate is provided with a first connecting part for connecting a greater trochanter; the distal end of the fixation bone plate is provided with a second connecting part for connecting a femoral shaft; the fixation bone plate is provided with a sliding hole corresponding to a fracture intramedullary fixation device; and one end of a connecting piece passes through the sliding hole and is connected with the fracture intramedullary fixation device, wherein the boundary dimension of the other end of the connecting piece is larger than that of the sliding hole. According to the invention, the fixation bone plate and the fracture intramedullary fixation device can be connected into a whole, so that reconstruction of a femoral proximal outer side wall and the internal intramedullary fixation can be integrated, firm fixation of the greater trochanter can be realized, and failure of the intramedullary fixing device can be effectively avoided.

The invention provides an internal fixation device for treating complex intertrochanteric fractures and an application method thereof, the device comprising a femoral shaft intramedullary main nail, afemoral neck main screw, a lateral steel plate, a femoral neck locking hollow nail, a distal main nail locking nail and a steel plate fixation screw, wherein the femoral shaft intramedullary main nail is inserted into a medullary cavity; the lateral plate is attached to the restored lateral wall of the great tuberosity. At least one femoral neck loc hollow nail is inserted and fix into that femoral head through the first locking hole. The head end of the femoral neck main screw is inserted into the femoral head through the femoral neck after pas through the sliding hole on the middle part ofthe lateral plate and the first lateral hole on the upper part of the femoral shaft main nail. The invention is used for internal fixation treatment of complex intertrochanteric fractures, has the advantages of good internal fixation effect, stability and less failure of internal fixation, and is particularly suitable for complex intertrochanteric fractures with comminuted lateral wall of great trochanter.

The invention relates to a memory alloy greater trochanter embracing fixator which comprises a main reinforcement, wherein the main reinforcement is made of a NiTi shape memory alloy plate, the plate surfaces of the main reinforcement are positioned in the left and right vertical directions, the bottom end of the left side edge of the main reinforcement is connected with the right end of a left embracing arm made of the NiTi shape memory alloy plate into a whole, the plate surfaces of the left embracing arm are positioned in the left and right vertical directions, the left embracing arm protrudes towards the upper left, a plurality of left anti-skid disengaging teeth made of the NiTi shape memory alloy plate are uniformly distributed on the side edge of top of the left embracing arm, the plate surfaces of the plurality of left anti-skid disengaging teeth are positioned in the left and right vertical directions, and the bottom side edges of the plurality of left anti-skid disengaging teeth are connected with the side edge of top of the left embracing arm into a whole. The invention aims to provide the memory alloy greater trochanter embracing fixator which has the advantages that a greater trochanter can be reliably and effectively held and fixed, an incision does not need to be excessively extended during an operation, the operation time can be shortened, the amount of bleeding is reduced, the operation is simple and convenient, and a greater trochanter steel plate used in existing hip replacement of patients with intertrochanteric fractures can be effectively replaced.

The invention relates to a manufacturing method and evaluation method of short-stem femur prosthesis formed by 3D printing of metals, in particular to the field of medicines. The manufacturing methodcomprises the steps of S1, obtaining CT images of femurs by scanning; S2, according to the CT images of the femurs, performing modeling to obtain a femur three-dimensional solid model; S3, based on the femur three-dimensional solid model, extracting a femur marrow cavity outline; S4, according to the femur marrow cavity outline and a conical flat stem scheme, obtaining a first prosthesis; S5, enabling the inner side of the upper segment of the first prosthesis to be matched with the arc of the inner side of a femoral calcar; S6, enabling stem outer side shoulders to be in contact with the inner side of greater trochanters; S7, according to a femur physical force line, designing a prosthesis middle axle of the first prosthesis to obtain a second prosthesis of which the cross section is in the wedge shape that the outer part is wide and the inner part is narrow; and S8, performing image fit on the second prosthesis to enable the upper part of the second prosthesis to be in entire interference force fit to a first preset value. The manufacturing method and the evaluation method solve the technical problem that how to improve the properties of the femur prosthesis, and are suitable forhip joint replacement surgery.

The invention relates to the technical field of medical auxiliary equipment, and discloses a fixing device for greater trochanter fracture of femur, the fixing device comprises a longitudinal rod I and a longitudinal rod II, the longitudinal rod I is located in front of the longitudinal rod II, the longitudinal rod I and the longitudinal rod II are both internally provided with a plurality of through holes I, binding wires penetrate through the through holes I, and the binding wires penetrate through the longitudinal rod II. First inner grooves are formed in the upper portions of the interiors of the first longitudinal rod and the second longitudinal rod correspondingly, the upper surfaces of the interiors of the first inner grooves communicate with the exterior, and first springs are fixedly connected to the lower surfaces of the interiors of the first inner grooves. The lower end of the first longitudinal rod and the lower end of the second longitudinal rod both straddle the front edge and the rear edge of the lateral femoris muscle so that the device can be pre-fixed and then fixed through the binding wire, and therefore the device is simple in overall operation, meanwhile, the distance between the first longitudinal rod and the second longitudinal rod can be adjusted according to different people when the device is used, and the device is convenient to use. And therefore, the overall practicability of the device is relatively high.

Shorts (1), which are one example of the disclosed garment with a crotch, are characterized by being provided with a main section (10); a pubic bone section (20) that covers the vicinity of the pubic bone; an upper edge section (30) that is formed in a downward convex shape diagonally upwards to the left and right from a central bottom end section (30a) that is above the pubic bone section (20); first band-shaped tightening sections (40a) that connect to the pubic bone section (20) and the upper edge section (30), and extend to the back surface side of the main section (10) while covering the greater trochanter (73); second band-shaped tightening sections (40b) that cover the portions from a location over either the sacrum or the lumbar vertebrae to the left and right reaching the vicinity of the greater trochanter; and a strongly tightening section (50) provided in a manner that covers the greater trochanter (73).

A mattress, the width of the waist support portion is narrower than the width of the back support portion and the leg support portion. The mattress is not in a square structure but in am irregular shaped structure. for all parts of the back support portion, the lumbar support portion and the leg support portion, the mattress with excellent user comfortable mattress and the operator's workability of care or care. By preparing of the necessary width to form the shape of the mattress itself, the mattress does not need to add additional items, remove additional objects like processes. According to the present invention, the bed of users comfortable easily implemented, and operator care or nursing bed user can easily put his hand to the user's body on the mattress, making nursing or nursing jobs become easy. In addition, because having so (lifting or man) to go to a job transfer to the appropriate location on the mattress (nursing beds occasions equivalent to the greater trochanter position) with clear position indicator, it can easily enable the user to move in bed.

The invention discloses a thighbone screw placement module and a manufacturing method thereof, and the thighbone screw placement module comprises: a plate-shaped main body which is closely attached to the outer side surface of the thighbone of a patient; a first column, wherein the first column body is of a cylindrical structure, and one end of the first column body is connected with the side, away from the femur, of the plate-shaped body; a second column, wherein the second column body is of a cylindrical structure, and one end of the second column body is connected with the side, away from the femur, of the plate-shaped body; and a third column, wherein the third column body is of a cylindrical structure, and one end of the third column body is connected with the side, away from the femur, of the plate-shaped body. The plate-shaped body, the first column, the second column and the third column are of an integrated structure. Through the application of the thighbone screw placement module, the femoral fracture of a patient can be quickly and accurately fixed, and the femoral head, the greater trochanter and the femoral neck of the patient can be stably connected after the corresponding bolts are mounted in the corresponding mounting holes; and the thighbone screw placement moduleis simple in structure, convenient to use and easy for 3D printing production.

The invention relates to the field of orthopedic medical instruments, specifically to a femoral stem prosthesis, a greater trochanter plate and a femoral trochanter prosthesis. The femoral stem prosthesis comprise an upper end and a lower end which are mutually connected, wherein the lower end is used for fixing the position of the femoral stem prosthesis; a protrusion is arranged at one side of the upper end; a baffle plate is arranged at the other side of the upper end; a Kirschner wire hole allowing a Kirschner wire to penetrate through is arranged on the baffle plate; one side, far away from the protrusion, of the upper end is provided with a first threaded hole; one side of the greater trochanter plate sinks inwards to form an inner surface and matches a femur; a curved needle capableof being bent is arranged on the outer surface of the greater trochanter plate; and a fixed piece used for fixing the greater trochanter plate is arranged on the greater trochanter plate. Thus, intertrochanteric fracture can be repaired; the occurrence frequency and probability of complications are reduced; and the success probability of an operation is improved.

The invention provides a medullary core three-dimensional decompressing device for treating avascular necrosis of femoral head as well as preparing and testing methods based on the medullary core three-dimensional decompressing device, relating to the technical field of decompressing of the moral head. The medullary core three-dimensional decompressing device for treating avascular necrosis of the femoral head comprises a guide template, wherein the guide template is saddle-shaped in the whole, the inner side curve of the guide template attaches to the bone surface below the greater trochanter at the proximal femoral, a cylinder is arranged at the outer side of the guide template, a plurality of guide channels are arranged in the cylinder in a penetrating manner, and a plurality of through holes communicating with the guide channels are correspondingly formed in the guide template. The medullary core three-dimensional decompressing device can rapidly complete the multi-channel three-dimensional decompression for the necrotic femoral head.

The invention relates to the technical field of hip joints, in particular to a safe area establishing method suitable for hip joint surgery, and solves the technical problems that in the prior art, a doctor arbitrarily intercepts a femoral neck and a femoral head according to personal experience and then implants a metal femoral stem, the metal femoral stem head cannot be consistent with the rotation center position of the original femoral head, and therefore, the problem of great inconvenience caused by the change of the walking posture due to the deviation of the gravity center, the change of gravity distribution and the like after the patient operation is solved. A safe area establishing method suitable for hip joint surgery comprises the steps that a diagonal plane is selected, a large trochanter section is determined, a mechanical arm is introduced to serve as a hip joint medical auxiliary surgical instrument, and a certain reasonable space protection area is determined to serve as a safe area according to the femur of a patient. Compared with cutting by experience of doctors, the method is more scientific, the eversion angle can be kept unchanged as much as possible, and the body gravity center bearing condition of a patient after an operation cannot be greatly changed.

The invention discloses an artificial femoral stem prosthesis used for a greater trochanter fracture. The prosthesis comprises a prosthesis body; the top end of the prosthesis body is successively provided with a prosthesis shoulder and a prosthesis neck; the prosthesis further comprises a small pillar; the small pillar and the femoral stem prosthesis are made of a same material; one end of the small pillar is provided with a threaded structure and can be screwed into the prosthesis shoulder, and the other end of the small pillar is provided with a plurality of nylon binding bands. The invention further discloses a fitting method for the artificial femoral stem prosthesis used for the large trochanter fracture. By applying the femoral stem prosthesis, a large trochanter bone block can closely lean on the small pillar to obtain reliable support, and is fixed firmly by using the nylon binding bands preinstalled on the small pillar to recover gluteus medius strain, so that a patient can do activities on the ground earlier to reduce bed rest complications, and to improve joint replacement quality.