38 results about "Iliac bone" patented technology

The utility model relates to an anterior column intramedullary nail for pelvis percutaneous internal fixation, which belongs to the technical field of orthopedic medical instruments and is characterized in that the front end of the anterior column intramedullary nail is cut to form a cut surface to form a tip; the anterior column intramedullary nail is arc-shaped, so that the anterior column intramedullary nail can conveniently penetrate along the suprapubis ramus and part of the ilium; the surface of the anterior column intramedullary nail is smooth so as to be prevented from penetrating into an articular cavity; a hollow channel is formed in the anterior column intramedullary nail, penetrates through the two ends of the anterior column intramedullary nail and is used for allowing an anterior column nail guide pin to penetrate through so that the anterior column intramedullary nail can penetrate into the suprapubis ramus and part of the ilium. The anterior column intramedullary nail for percutaneous internal fixation of the pelvis disclosed by the utility model can be matched with an in-vitro guide frame for percutaneous internal fixation and reinforcement of the intramedullary nail around the acetabulum for use, assists the anterior column intramedullary nail to be percutaneously fixed around the acetabulum, and is suitable for penetrating through an anterior column nail guide tube of the in-vitro guide frame and only penetrating into suprapubic ramus and part of ilium; and popularization and application of pelvic metastatic carcinoma surgery are facilitated.

The utility model discloses a kind of iliac bone nails, it is related to surgical instruments technical field, comprising: outer nail and inner nail, outer nail peripheral wall is provided with thread, outer nail inside is provided with accommodating hole, outer nail peripheral wall is provided with multiple grooves, groove is communicated with accommodating hole, the peripheral wall of outer nail is formed with porous structure;Inner nail is arranged in accommodating hole, the diameter of inner nail is less than the diameter of accommodating hole.The utility model can long-term effectively fix sacroiliac joint.

This application discloses an external positioning and guiding device for pelvic fracture channel screws. This application achieves a first repositioning of the lesion location through a percutaneous positioning guide plate with multiple spaced positioning perforations and multiple first positioning tubes connected to the base body, each equipped with a positioning and guiding component. The first positioning tubes pass through corresponding positioning perforations, abutting against the patient's iliac bone, thus achieving a second repositioning of the lesion location. Multiple first positioning pins pass through corresponding first positioning tubes and connect to the patient's iliac bone, achieving stable connection and limitation of the base body based on dual positioning, preventing base body displacement. Finally, by connecting the positioning guide tubes to the base body and passing the channel screws through the positioning guide tubes, connecting the affected and healthy iliac bones, the channel screws are positioned and oriented.

A system and method for fusing the sacroiliac joint is described herein. The system includes a first sacrum anchor and a first compression anchor for implantation through a bore in the iliac bone into engagement with the first sacrum anchor. The first sacrum anchor includes an external thread portion, and an internal channel defined by an inner surface. The inner surface includes an internal thread portion. The first compression anchor includes an outer thread portion along part of the shaft configured to engage the internal thread portion of the first sacrum anchor. Rotation of the first compression anchor draws the first compression anchor toward the first sacrum anchor when the outer thread portion of the first compression anchor is threadably engaged with the internal thread portion of the first sacrum anchor. This configuration allows a user to dial in the appropriate compression on the SI joint.

The invention is a construct consisting of a fully-threaded screw with an attached locking bolt that secures the posterior pelvis in a transiliac transsacral fashion, in the setting of an unstable posterior pelvic ring fracture. One part of the implant is a cannulated screw that has two pitches of different threads, which is placed over a guidewire and secured on the opposite side with a cannulated locking bolt that affixes to the screw. Washers on either side of the implant provide compression, and cancellous threads across the length provide fixation within the sacrum and the iliac bones on either side. This invention provides added strength and stability compared to current fixation methods consisting of screws in isolation.

The application discloses a pelvic tumor resection surgical incision construction system and a pelvic tumor whole piece resection system. When a tumor does not affect a Ⅳ area, a projection point of a iliac crest on a body surface is taken as a starting point, and a projection point on the body surface is extended in a pubis direction of the iliac bone. According to different extension points, a single smooth virtual incision path one is constructed by bending downward in a thigh direction. When the tumor affects the Ⅳ area and other areas, the virtual incision path is two independent and non-intersecting first incision paths and second incision paths. The first incision path is extended from a body surface projection point of a longitudinal axis of a vertebral body to a sacrum direction, and is an incision path that is inclined to a tumor side in a sacrum area. The second incision path is a line connecting a body back projection point of the iliac crest to a body front projection point, and is combined with a corresponding smooth virtual incision path one to construct a complete smooth virtual incision path two. Through the above-mentioned method, incision intersection can be effectively avoided, and the incision path is beneficial to blood supply, and the healing effect is ensured.

The invention discloses an iliac defect reconstruction device and a preparation method thereof, the iliac defect reconstruction device comprises an implant, the implant comprises a biological implant, the shape of the biological implant is matched with the shape of a bone defect part; the memory metal bracket is embedded in the biological implant; the memory metal stent is formed by mutually connecting a plurality of tubular structures; wherein the memory metal stent can be molded into a first form at a first temperature, and is embedded and mounted in the biological implant in the first form; the memory metal stent deforms into a second form at a second temperature so as to generate stress stimulation on the biological implant; the first temperature is lower than the second temperature; and an embedding groove matched with the first form is formed in the biological implant. The ilium defect reconstruction device provided by the invention has multiple functions of personally adapting to a bone defect part, stimulating new bone growth and mechanically stabilizing.

FIELD: traumatology; orthopedics.SUBSTANCE: used in the treatment of displaced fractures of both columns of the acetabulum (AC). After performing repositioning and metal osteosynthesis of the anterior column of the acetabulum, X-ray control is performed. A proximal support consisting of two halves is formed on bone rods inserted into the iliac bones. On the hip, on the bone rods, on the side of the acetabulum fracture, in a position of its internal rotation by 10° , a distal support along the outer surface is formed with the possibility of movement, distraction and lateralization. The proximal and distal supports are connected by rods, with the help of which distraction along the axis of the femur is performed by 2 cm and its lateralization by rods by 1.5 cm, the apparatus is stabilized, and X-ray control is performed.EFFECT: method ensures anatomically correct restoration of the acetabulum and its reliable stabilization, allowing the patient to be activated at an early stage due to the formation of a proximal support from two halves on bone rods inserted into the iliac bones, creating the ability to produce and maintain internal rotation of the hip, distraction and lateralization of the hip along its axis due to internal rotation of the hip by 10°, creating tension in the short external rotators of the hip.1 cl, 4 dwg, 1 ex

To provide an absorbent article that does not compress iliac bone of a wearer.SOLUTION: An absorbent article has a length along a longitudinal direction corresponding to a front-back direction of a wearer and a length along a width direction orthogonal to the longitudinal direction, and comprises: a front body area located on a front side of a wearer in the front-back direction; a back body area located on a back side of the wearer; a crotch area located between the front body area and the back body area; an exterior sheet forming an exterior surface of at least one of the front body area and the back body area; a plurality of tapes provided at one of the front body area and the back body area, disposed apart from each other in the longitudinal direction in at least one side of the width direction, extending outward in the width direction from the exterior sheet, and each including a sticking part disposed on a skin surface side of the wearer; a sticking object part provided on an exterior surface of the other of the front body area and the back body area and to which the sticking part can be stuck; and an adhesion part for adhering a skin surface side of an area located on a width-direction center side of the tape and a skin surface side of the exterior sheet.SELECTED DRAWING: Figure 3

The aim of the invention is that of providing an improved pelvic fixation system Sy which can be used in spinal surgery and is effective, simple and easy to use. To this end, the invention relates to a pelvic fixation system Sy which can be used in spinal surgery and comprises:  at least one first element (1) which is intended for trans-iliosacral implantation;  at least one second element (2) which is intended to be implanted in the sacrum; and  at least one third element, preferably an intervertebral link (rod), which belongs to a posterior spinal stabilisation assembly;  the first element (1) being intended to be mechanically connected to the second element (2), which is itself intended to be rigidly connected to the third element; characterised in that  the first element (1) is intended to be implanted first through the iliac bone and the sacrum; and  the first element (1) has at least one hole (14) in which the second element (2) is intended to be fixed once the first element (1) has been implanted. The invention also relates to the first trans-iliosacral element alone, to a sub-assembly of the system Sy, consisting of the first element (1) and the second element (2) or the third element of the system, and to a surgical pelvic fixation kit comprising the fixation system Sy, the sub-assembly or the trans-iliosacral element and an aiming device, which can be used when the first element (1) is screwed into the iliac bone and the sacrum to allow for precise placement of the second element (2) in a hole of the first element (1), and / or at least one awl.

The application discloses a femoral head lesion auxiliary positioning guider and a high-precision positioning method, and relates to the technical field of medical treatment, which comprises a femoral head lesion guider, a guider positioner and a needle depth positioner, the guider positioner comprises a fixing set, a holding handle and an iliac bone positioning plate, the fixing set is arranged at one end of the holding handle, the iliac bone positioning plate is arranged at the other end of the holding handle, a precut anterior superior iliac spine clamping groove is arranged on the iliac bone positioning plate, and a channel positioning cavity is arranged in the middle of the fixing set. The femoral head lesion auxiliary positioning guider of the application is customized, the precision and effect of traditional positioning of femoral head lesions can be effectively improved, the bone shape and lesion conditions of different patients can be better adapted to, the success rate of surgery and the postoperative recovery effect of patients are improved, the number of fluoroscopy in surgery is greatly reduced, the surgery time is shortened, the surgery risk is reduced, and the surgery success rate is improved.

To provide a traction device in consideration of comfort based on human engineering.SOLUTION: A traction device includes: a bed frame; and a floor plate provided on the bed frame. In the traction device, the floor plate includes four floor plate blocks. A first floor plate block is movable and is provided with: a cervical vertebra cushion based on human engineering; a head shape fixing member for completely covering the head part of a human body; and a lower jaw fixing band. A second floor plate block is fixed and is provided with: a plurality of stoppers including shoulder stoppers to provide reaction force for stretching the cervical vertebrae and being adjustable in response to a body shape of a user; and armpit stopper shafts to provide reaction force for extending thoracic vertebrae and lumbar vertebrae. A third floor plate block is movable and is provided with: a waist cushion based on the human engineering; and iliac bone stoppers being adjustable in response to the body shape of the user. A fourth floor plate block is movable and is provided with a plurality of foot fixing members respectively constituted by an upper member and a lower member.SELECTED DRAWING: Figure 12

The invention discloses a device for treating diabetic foot through ilium transport, which comprises a first transport plate and a second transport plate, the first transport plate and the second transport plate are connected through a transport stud, and the lower end of the transport stud is rotatably connected with the inside of the first transport plate left and right and fixedly connected with the inside of the first transport plate up and down. The carrying stud is in meshed connection with the second carrying plate through threads, first detachable bone needles are arranged at the two ends of the first carrying plate respectively, second detachable bone needles are arranged at the two ends of the second carrying plate respectively, and the problems that according to an existing operation for treating the diabetic foot through tibia transverse carrying, in the postoperative functional exercise and walking process of a patient, the patient is prone to disengagement and disengagement are solved. The problem of fracture of the tibia due to the fact that the local loading capacity is reduced after the tibia is windowed is solved, and the problem that the contact part of the bone needle and the shank is easily infected due to friction between the bone needle and the muscle on the tibia when the patient walks is also solved.

An external iliac bone rehabilitation robot lower limb wrapping assembly capable of achieving dynamic conformal fitting comprises a rigid exoskeleton, the lower end of the rigid exoskeleton is connected with a rigid support, a soft air bag array adheres to the inner side of the rigid support in an annular mode, and air bags in the soft air bag array are connected with an air pressure driving control system through an air path; the air pressure driving control system comprises a miniature air source, a relay, an electromagnetic valve, a microcontroller and an air pressure sensor which are integrated on the rigid exoskeleton, the miniature air source is connected with the soft air bag array through the electromagnetic valve and an air path, the electromagnetic valve is connected with the relay, and the relay is connected with the output end of the microcontroller; the input end of the microcontroller is connected with the signal output end of the air pressure sensor; in the movement of the rehabilitation exoskeleton robot, the contact stress between the soft air bag array and the limbs is detected through the air pressure sensor, the stress serves as a feedback signal, the size of each air bag is adjusted in real time through the air pressure driving control system, and the force transmission efficiency and the wearing comfort of the lower limb exoskeleton robot are improved.

The invention relates to the technical field of bone defect reconstruction, in particular to a 3D printing guide plate for autologous iliac bone extraction and bone defect reconstruction and a preparation method and application of the 3D printing guide plate for autologous iliac bone extraction and bone defect reconstruction. Tumor excision is simulated in a computer, and a bone defect area three-dimensional model is generated; according to the bone defect area model, the optimal ilium taking position, size, shape and bone taking scheme are determined through computer aided design; designing a bone taking guide plate and a fixing guide plate according to the bone taking scheme, wherein the guide plate is prepared through a 3D printing technology. According to the method, key steps (such as tumor resection simulation, bone taking scheme design and bone grafting fixation simulation) of bone defect reconstruction are all completed under the assistance of a computer, a standardized operation process is formed, and a standardized solution for bone defect reconstruction is constructed.

The utility model discloses an oral maxillofacial head and neck tumor patient iliac pressurizing device in the technical field of pressurizing devices, which comprises a binding mechanism, the binding mechanism comprises a pressurizing box, winding drums are arranged at two ends of the pressurizing box, first winding rods are rotatably arranged at two ends of the inner wall of each winding drum, and a second winding rod is rotatably arranged at two ends of the inner wall of each winding drum. Binding belts are arranged on the two first winding rods in a winding manner; when an operator pulls the magic tape to move, the binding belt is promoted to move, so that the first winding rod is promoted to drive the one-way bearing to rotate, the one-way bearing is in a locked state, the second winding rod is driven by the one-way bearing to rotate to wind the non-woven fabric, and the used non-woven fabric is replaced; the possibility of cross infection when a patient uses the device is reduced; when an operator pulls the inflation equipment out of the inflation pipe, the limiting block and the piston block are conveniently pushed to move upwards through the spring, so that the piston block is separated from the air guide groove, and the inflation pipe is sealed through the piston block.

The invention relates to the field of animal model establishment, and discloses a method and equipment for establishing an intervertebral disc degeneration animal model.The method for establishing the intervertebral disc degeneration animal model.The method comprises the marking stage, specifically, an animal is processed, the processed animal is placed on a test bed, then a straight line is drawn in the trend of the spine spinous process of the animal, and the animal is marked; a long needle head perpendicular to the marking line is placed at the highest points of the iliac bones on the two sides of the animal, and a preliminary image is obtained; and fine adjustment processing: adjusting the position of the long needle head according to the initial image to enable the long needle head to coincide with the intervertebral disc position between the L5 and the L6, and then marking to obtain a second marking line. Through gradual implementation of a marking stage, fine adjustment treatment, an injection stage and subsequent treatment, establishment of the intervertebral disc degeneration animal model is realized, the whole process operation is relatively simple and easy to realize, the time required for constructing each model is relatively short, the cost is relatively low, and the method can be widely applied to various animal species; meanwhile, the damage to animals is small.

A mattress (1) capable of facilitating respiration when lying on the back is provided. The mattress (1) includes: a pair of iliac bone support portions (11) respectively configured below positions corresponding to portions (LMb) on at least a width direction outer side of iliac spines (LMa) on a pair of iliac bones (LM) in a pelvis (PV), thereby respectively supporting the positions corresponding to the pair of iliac bones (LM) from below; and a sacrum corresponding portion (12) configured between the pair of iliac bone support portions (11) and below a sacrum (S) between the pair of iliac bones (LM) in the pelvis (PV). The pair of iliac bone support portions (11) and the sacrum corresponding portion (12) are configured in a manner that body pressure from the sacrum corresponding portion (12) is lower than body pressure from the pair of iliac bone support portions (11).

This utility model relates to the field of medical device teaching models, and more particularly to a medical thoracolumbar region model, comprising: a spinal assembly, which includes multiple vertebral models and intervertebral components; a bone assembly, which includes connected sacral and iliac bone models, and is connected to the spinal assembly; a ligament assembly, which includes supraspinous and interspinous ligaments; a muscle assembly, which has an installation chamber, in which the spinal assembly and bone assembly are installed; a skin assembly, which covers the upper muscle model; and a fixation assembly, on which the lower muscle model is placed; the hardness of the intervertebral components, ligament assembly, muscle assembly, and skin assembly decreases sequentially, and the density of the spinal assembly, bone assembly, ligament assembly, muscle assembly, and skin assembly gradually decreases, thereby forming different imaging images. This solves the technical problem that existing medical models cannot achieve effective imaging.

This invention provides an iliac bone prosthesis, comprising: a first base; a second base movably disposed on the first base along the stacking direction of the first and second bases; and an operating mechanism including a first operating member, a transmission member, and an anti-rotation part. The first operating member is disposed on the first base, and the first operating member and the transmission member are movably connected. The transmission member is disposed on the second base and driven by the first operating member. The anti-rotation part restricts the rotation of the second base relative to the first base. The first operating member can drive the second base to move via the transmission member. One of the second base and the first base is used for connection to the sacrum, and the other of the second base and the first base is used for connection to an acetabular cup prosthesis. The technical solution of this application effectively solves the problem of fixing the external dimensions of the iliac bone prosthesis.

This utility model discloses a medical shoulder arthroscopy bone grafting tool, comprising: a hollow sheath; an inner core mechanism or implantation mechanism that can be inserted into the sheath; the inner core mechanism includes an inner core rod and an operating block connected in sequence, the inner core rod extending into the sheath, and the inner core rod and the operating block having interconnected first guide pin holes; the implantation mechanism includes a fixing block, a connecting rod, and an implantation block connected in sequence, the connecting rod and the implantation block extending into the sheath, and the fixing block, the connecting rod, and the implantation block having interconnected second guide pin holes, the fixing block having several first guide wire holes, and the implantation block having several second guide wire holes. This device, through the use of the sheath, inner core mechanism, and implantation mechanism, can not only adapt to regular allogeneic bone blocks, but also to the irregular shape and size of autologous iliac bone, allowing for more precise bone block implantation, improving the success rate of bone grafting, reducing interference with surrounding soft tissues during the bone grafting process, helping to protect surrounding tissues, reducing surgical trauma, and accelerating postoperative recovery.

The invention discloses a pelvic fracture channel screw in-vitro positioning and guiding device. According to the application, the plurality of positioning through holes arranged at intervals are formed in the percutaneous positioning guide plate, and the plurality of first positioning pipes provided with the positioning guide assembly are respectively connected to the base frame main body, so that the first repositioning of the focus position is realized through the percutaneous positioning guide plate, and each first positioning pipe respectively penetrates through the corresponding positioning through hole; a plurality of first positioning needles penetrate through the corresponding first positioning pipes and are connected with the ilium of the patient, so that the base frame body is stably connected and limited on the basis of double positioning, deviation of the base frame body is prevented, and the accuracy of the ilium of the patient is improved. The positioning guide pipe is connected to the base frame body, the channel screw penetrates through the positioning guide pipe, and the affected side ilium and the uninjured side ilium of the patient are connected, so that positioning and orientation of the channel screw are achieved.

A system and method for fusing the sacroiliac joint is described herein. The system includes a first sacrum anchor and a first compression anchor for implantation through a bore in the iliac bone into engagement with the first sacrum anchor. The first sacrum anchor includes an external thread portion, and an internal channel defined by an inner surface. The inner surface includes an internal thread portion. The first compression anchor includes an outer thread portion along part of the shaft configured to engage the internal thread portion of the first sacrum anchor. Rotation of the first compression anchor draws the first compression anchor toward the first sacrum anchor when the outer thread portion of the first compression anchor is threadably engaged with the internal thread portion of the first sacrum anchor. This configuration allows a user to dial in the appropriate compression on the SI joint.

Provided is a mat (1) that can promote breathing in a supine position. A mat 1 supports at least the region of a supine person 50 corresponding to the pelvis PV, the mat comprising a pair of iliac support parts 11 for supporting the regions of the supine person 50 corresponding to the pair of iliac bones LM, and a sacrum support part 12 for supporting the region of the supine person 50 corresponding to the sacrum S of the supine person 50. Each of the iliac support parts 11 has an iliac-lower-part-supporting part 11a for supporting the region of the supine person 50 corresponding to a portion of the iliac bone LM that is below the sacroiliac joint J1, and an iliac-upper-part-corresponding part 11b that corresponds to a portion of the iliac bone LM of the supine person 50 that is above the sacroiliac joint J1. The body pressure from the sacrum support part 12 and the body pressure from the iliac-upper-part-corresponding part 11b are configured to be lower than the body pressure from the iliac-lower-part-supporting part 11a.

The utility model relates to the field of medical equipment, in particular to a pelvis fixing band capable of preventing pressure injury, which comprises a fixing band body, a first connecting piece and a second connecting piece detachably connected with the first connecting piece are respectively arranged at two ends of the fixing band body, and a first water cushion is arranged on the front end face of the fixing band body. Second water cushions slidably connected with the first water cushion are arranged at the two ends of the first water cushion respectively, the cross section of each second water cushion is annular, and containing cavities used for containing liquid are formed in the first water cushion and the second water cushions respectively. The pelvis fixing belt for preventing pressure injury reduces the susceptibility of pressure sores of a patient, the first water cushion and the second water cushion can reduce the temperature of the skin attached to the patient when being worn, the pressure sores are prevented, meanwhile, the first water cushion and the second water cushion are prone to deformation when being pressed, and the pressure of the pressed skin is relieved. The second water cushion can slide relative to the first water cushion, the position of the second water cushion can be conveniently adjusted according to the body type of the patient so that the second water cushion can be accurately attached to the iliac bone, and the hip is tightened while the skin is prevented from being bruised.

The invention particularly relates to a pelvic fracture external fixation frame fixation iliac crest screw placement guider and a use method thereof. The guider comprises a drilling guide pipe, an auxiliary guide column and a connecting structure. The connecting structure comprises a connecting piece, a first puncture needle and a second puncture needle with the same structure as the first puncture needle; a drilling guide pipe and an auxiliary guide column are fixed to the two ends of the connecting piece correspondingly. One end of each puncture needle is of a pointed cone structure, and the other end of each puncture needle is fixedly installed on one side of the auxiliary guide column. The connecting piece and the two puncture needles are parallel to each other; and the length of the connecting piece is consistent with that of the two puncture needles. The optimal nail feeding point is accurately positioned through the guider, a probe opening method is combined, the Schanz nail is guided to always walk in the cancellous bone between the inner plate and the outer plate of the ilium, and finally the purposes of improving the nail placement accuracy, increasing the fixing strength, reducing complications, shortening the operation time and reducing the medical cost are achieved.

The invention discloses a customized and assembled semi-sacrum biological prosthesis and a manufacturing method, and relates to the technical field of medical instruments, the customized and assembled semi-sacrum biological prosthesis comprises a prosthesis main body and an ilium reconstruction member, and the prosthesis main body and the ilium reconstruction member are detachably connected; a first fusion face is arranged at the upper end of the prosthesis body and used for being attached to a lumbar vertebra lower end plate, a second fusion face is arranged on the side face of the prosthesis body and used for being attached to a sacrum midline osteotomy face, a first hook body is arranged at the top of the ilium reconstruction piece, and a second hook body is arranged at the bottom of the ilium reconstruction piece. A first hook body is arranged at the bottom of the ilium reconstruction part and used for being connected with the top of the iliac wing, a second hook body is arranged at the bottom of the iliac reconstruction part and used for being connected with the front portion of the lower edge of the iliac bone, and a third fusion face is arranged on the side face of the iliac reconstruction part and used for being attached to the iliac bone cutting face. The ilium osteotomy surface and the lumbar vertebra lower end plate are in good butt joint, and biomechanical conduction of the pelvis of the human body is met.

The invention provides a fixing device for two-photon recording, which comprises a body, two first connecting pieces and two second connecting pieces, the body is provided with a mounting hole which corresponds to a dorsal root ganglion of a sacral segment of a mouse and is used for mounting the two-photon lens, two first grooves which correspond to posterior iliac spines on two sides of the mouse and are used for embedding the posterior iliac spines on the two sides, two first connecting holes which correspond to the ilium of the mouse, and two second connecting holes which correspond to the sacrum of the mouse; the two first connecting pieces are inserted into the two first connecting holes to connect the body to the ilium; the two second connecting pieces are inserted into the two second connecting holes to connect the body to the sacrum. According to the application, stable imaging of sacral segment dorsal root ganglion neurons can be realized when a mouse is in a completely waking and free activity state.

The invention discloses a percutaneous minimally invasive iliac bone extractor, comprising a guide needle, and also comprising an expansion sleeve, whose inner diameter is greater than the diameter of the guide needle; an outer sleeve, whose inner diameter is greater than the outer diameter of the expansion sleeve; a bone extraction tube, whose outer diameter is less than the inner diameter of the outer sleeve, and a plurality of first saw teeth are provided on the end surface of one end of the bone extraction tube, wherein the first saw teeth are oblique teeth, and the opposite sides of the first saw teeth respectively have a blade and a back of the blade, the length of the blade is greater than the length of the back of the blade, and the thickness of the outer end of the blade is greater than the thickness of the inner end of the blade. The percutaneous minimally invasive iliac bone extractor provided by the invention causes a small skin incision, realizes minimally invasive surgery, is simple to operate, and greatly improves the efficiency of bone extraction, is conducive to reducing the damage to the patient caused by the surgery, and reduces the risk of further damage to the patient caused by breaking the tail end of the ilium, and alleviates the iatrogenic injury of the patient.

The present invention discloses a special bone harvesting and bone grafting device for iliac bone blocks with cortical bone, which includes a connecting plate. At least one osteotome is provided on one side of the connecting plate, and a connecting rod is provided on the other side. A percussion component is provided on one side of the connecting rod, and a depth-limiting component is sleeved on the connecting rod. By setting two mutually parallel bone harvesting knives, during bone harvesting, they are adjusted to the size estimated by imaging and the bone chiseling depth is precisely limited. After the two bone knives can chisel the two sides of the iliac bone block parallel and vertically at one time, the third side of the iliac bone block can be intercepted through the swing knife guiding groove channel between the two limiting plates by an ordinary swing knife. In this way, an iliac bone block with an upper and lower surface and one side surface having cortical bone is intercepted, and during the bone harvesting process, the stress area and stress accuracy of the iliac bone are increased, avoiding the splashing of small iliac bone blocks. After the bone harvesting is completed, the present invention can directly be used to complete the bone grafting operation, so that the present invention can complete the bone harvesting and bone grafting operations at one time.