28 results about "Bone masses" patented technology

The invention discloses a personalized PEEK (Polyether Ether Ketone) implant prosthesis and a design method thereof. The prosthesis is a chin prosthesis connected with the mandible of a human body and is made of polyether-ether-ketone (PEEK); the thickness and the shape of the chin region at the bottom of the prosthesis are designed by taking an ideal side appearance profile as a guide; a step is designed in a bone broken end area on the inner side face of the prosthesis, and the side face width of the step is matched with the movement amount of a free bone block. The inner side face of the prosthesis wraps the mandibular margin, and the two sides of the prosthesis are naturally connected with the mandibular margin. Compared with a traditional titanium fixing plate, the elastic modulus of polyether-ether-ketone is close to that of the jaw bone, and the stress shielding effect can be reduced. The personalized polyetheretherketone prosthesis is designed according to the shape of the retreated bone segment end in the operation, the lower jaw front bone block is integrally fixed, errors generated by bending a titanium plate in the operation are avoided, and the accuracy and stability of moving and positioning of the bone block are ensured. The chin shape can be designed in a personalized mode, the mass is light, and second-stage operation taking-out is not needed.

The invention discloses a set instrument for acetabulum tenon-and-mortise structural bone grafting and application, relates to the field of orthopedic surgical instruments, adopts a cylindrical ring file, a wedge-shaped angle file, a hollow trephine and a wedge-shaped osteotomy guide plate as the set instrument for acetabulum tenon-and-mortise structural bone grafting, and introduces a tenon-and-mortise structure mechanical embedding principle of Chinese traditional woodworking science into the field of acetabulum reconstruction. According to the acetabular cup prosthesis, a mortise and tenon structural bone grafting of an autologous femoral head is adopted, a Mortia and Tenon Bone Grafting technology (Mortia and Tenon Bone Grafting, MTBG) is innovatively put forward, an acetabular bone groove and a bone grafting block which are matched are prepared in a standardized mode, acetabular defects are embedded and filled through the accurately matched bone block, and the coverage rate and initial stability of the acetabular cup prosthesis are remarkably increased, and the bone fusion prospect of the acetabular cup prosthesis is remarkably improved; the hip joint function of the patient is obviously improved, pain is relieved, the walking ability is improved, and the life quality is improved; the invention provides a reliable and efficient new structural bone grafting technology, and the safety and long-term effect of DDH acetabulum reconstruction can be improved.

The invention discloses a method for manufacturing a jaw bone fixation and morphological filling body, which belongs to the field of surgical operation technology, and includes the following steps: preliminary design of the filling body: designing a PEEK material filling body A according to the patient's bone morphological imaging data; positioning guide plate design: designing a bone cutting line and a positioning hole on the positioning guide plate; secondary design of the filling body: simulating bone cutting surgery to obtain the postoperative new bone morphology, and subtracting the overlapping part of the PEEK material filling body A with the free bone block to obtain the PEEK material filling body B; tertiary design of the filling body: designing a retention hole on the PEEK material filling body B, and performing edge trimming and surface smoothing treatment to obtain the PEEK material filling body C; manufacturing the filling body and positioning guide plate: manufacturing according to the design scheme of the PEEK material filling body C and the positioning guide plate. A filling body made of PEEK material can be manufactured, which can achieve the dual functions of postoperative bone block fixation and bone morphological filling, simplify the surgical process, and has no imaging artifacts.

A surgical kit for performing a tibial tubercle osteotomy (TTO) is provided. The surgical kit comprises a primary surgical module configured to be secured to a patient's tibia and a bone-fastener predrilling module. The primary surgical module has a bone-contacting surface configured to be superposable against the patient's tibia and conforming thereto in a single predetermined position and orientation and an operative side. The primary surgical module includes an anchor portion securable to the patient's tibia, a primary cutting portion defining a coronal cutting plane, and a proximal cutting portion defining a proximal cutting plane. The coronal and the proximal cutting planes are configured to guide a surgical cutting tool to create a resection in the patient's tibia and to at least partially delimit a tibial tubercle fragment.

The invention belongs to the technical field of hip joint surgery dislocation approach, and particularly relates to a hip joint surgery dislocation approach osteotomy and screw placement guide assembly and a use method. The guide assembly comprises an osteotomy auxiliary plate and a screw guide plate. The osteotomy auxiliary plate is arranged on the outer side of the exposed greater trochanter femur of the patient and assists the external cutting device in conducting osteotomy operation on the greater trochanter of the femur of the patient. The screw guide plate is arranged on the outer side of greater trochanter of the thighbone of a patient after osteotomy is completed and used for positioning and guiding the at least two reset fastening screws. An osteotomy and screw placement guide assembly is designed in a conventional hip joint surgery dislocation approach operation, an osteotomy auxiliary plate and a screw guide plate are designed, and the osteotomy auxiliary plate comprises an osteotomy guide mechanism at a proper position and is used for accurately positioning the osteotomy position of a greater trochanter osteotomy block of a patient; the problem that in the prior art, when osteotomy is conducted on a patient completely depending on doctor experience, an osteotomy block is likely to be too large or too small or the osteotomy direction is dislocated is solved.

The invention discloses a rapid suspension device for maxillary fracture, belongs to the technical field of medical emergency treatment instruments, and aims to solve the problem that a rapid, stable and portable external fixing device is lacked in maxillary fracture emergency treatment in a battlefield environment. The device comprises a head sleeve assembly, a pull rope locking mechanism, an insertion assembly and a maxilla bracket assembly, the head sleeve assembly comprises an annular head sleeve and a cross belt, the pull rope locking mechanism is installed on the two sides of the head sleeve through the adjusting assembly, the plug-in assembly is composed of a detachable plug-in buckle female head and a detachable plug-in buckle male head, and the maxilla bracket assembly comprises a left denture, a right denture and an arc-shaped connecting rod. The device adopts a magic tape, a BOA knob and a plug-in mounting structure, so that quick mounting and tension adjustment are realized, the distance between denture supports can flexibly adapt to different wounded persons, a medical metal material can be repeatedly disinfected, maxillary fracture bone blocks can be effectively supported forwards, backward falling is prevented, the smoothness of the upper respiratory tract is guaranteed, and the device is adaptive to battlefield first-aid efficient treatment requirements; the survival rate of the wounded with maxillofacial trauma can be obviously improved.

A tibial plateau posterior lateral fracture fixing device comprises a fixing steel plate and screws. The fixing steel plate comprises a C-shaped steel plate body, a binding face which is formed on the inner side of the C-shaped steel plate body and used for being attached to sclerotin under a tibial plateau articular surface, one or more fixing screw holes formed in the front end of the C-shaped steel plate body, and positioning holes which are formed in the rear end of the C-shaped steel plate body and are opposite to the one or more fixing screw holes. The screws are matched with the one or more fixing screw holes, and the tail ends of the screws can be clamped in the positioning holes; according to the fixing device limited by the application, the injury risk of nerve, blood vessel and tendon caused by a complicated anatomical structure of a conventional rear side approach is avoided; the C-shaped steel plate body can penetrate through a gap between an outer side collateral ligament and a tibial condyle above a fibula head and wrap the rear outer side of a tibial plateau, so that extrusion supporting of a blind area bone block on the rear outer side is achieved; and the two screws are clamped into the rear positioning holes to form a frame structure, so that the fixing device has good mechanical stability.

The present invention discloses a method, device, equipment and medium for determining an internal fixation scheme for a femoral neck fracture, which comprises obtaining quantitative three-dimensional image data corresponding to the femoral neck position on the fracture side of a patient; determining the elastic modulus of each unit volume data block in the quantitative three-dimensional image data based on bone density data; performing spatial resetting processing on a first fractured bone block and a second fractured bone block to obtain resetting spatial position data corresponding to each unit volume data block; constructing a femoral neck resetting model based on the resetting spatial position data and the corresponding elastic modulus; applying a plurality of preset steel nail fixation schemes to the femoral neck resetting model respectively, determining a force feedback value based on a preset applied force and the elastic modulus of the steel nail fixation part of the femoral neck resetting model; and determining a target steel nail fixation scheme based on the force feedback value. The present invention can determine an internal fixation scheme for a femoral neck fracture that meets the individual differences of the patient, thereby improving the stability and adaptability of the internal fixation of the femoral neck fracture.

The present invention relates to a shoulder dislocation repair system, comprising: a working channel device for delivering a graft bone block from the front side of the shoulder joint, a guiding device for establishing a glenoid bone tunnel from the back to the front, and a fixing device for fixing the graft bone block in front of the glenoid. The shoulder dislocation repair system of the present invention simplifies the number of surgical tools and optimizes the structural design of surgical tools, thereby optimizing the surgical process and improving surgical efficiency; the shoulder dislocation repair system can use a posterior approach to establish the glenoid bone marrow, avoiding the dense areas of the arteries, veins, nervous system, and lymphatic system on the front side of the shoulder joint, so that the wound is small, the damage to the human body is small, the requirements for doctors are low, the surgical risk is small, and it is easy to promote; the use of suture steel plate pressure fixation can avoid the complications related to screw fixation; the bone removal site is changed to the ilium, which does not change the original physiological structure of the human body and will not cause unknown risks.

The utility model discloses a humerus handle beneficial to large and small tubercle reconstruction, which comprises a humerus prosthesis handle, a cover plate and a fixing screw, a screw hole is arranged on the humerus prosthesis handle, a joint surface is fixed on the humerus prosthesis handle, the joint surface is matched with a cambered surface joint head, and the cover plate is fixed on the cover plate. The humerus prosthesis handle is mutually fixed with a human body bone block through the cover plate and the fixing screw. According to the humerus handle beneficial to large and small tubercle reconstruction, the overall operation is simple, a doctor does not need to conceal a suture binding mode and a mechanical structure when a patient moves later, compared with a traditional suture binding mode, the risk that bone fragments are separated from the binding position is high, the design has no risk, fixation is firm, the humerus prosthesis handle is made of a titanium alloy material, and the use is convenient. The screw and the cover plate are also made of titanium alloy materials, biocompatibility is guaranteed, meanwhile, strength is achieved, the cover plate and the screw are in spherical connection, the device can better adapt to the shape of a bone block, and the adaptability of the device is improved.

The invention discloses an autogenous bone taking instrument which comprises a bone taking device, a positioner and a positioning channel, and the bone taking device has various forms. The trephine bone extractor is mainly used for obtaining complete bone blocks; after the spiral bone fetcher is positioned, the spiral structure drives the cut bone blocks to enter the storage cavity; the ring cutting bone taking device can be used for completely cutting bone blocks; the spiral lifting bone taking device can store broken bone blocks in a centralized mode through a spiral structure. The bone taking bin is composed of a bin body and a bin cover, and bone scraps are cut through an incomplete circular groove. The bone scraper scrapes broken bones in the bone taking channel through the sharp cutting edge at the front end, and the broken bones can be taken out through the storage cavity. Three fixing needles are arranged on the edge of the positioner to facilitate intraoperative positioning, and a bone taking hole is formed in the middle and used for positioning the intraoperative bone taking device. The positioning channel is of an oval exposed structure and has two forms. The autologous bone extractor is high in bone extraction efficiency and operation precision, and the operation effect and the postoperative recovery effect of a patient can be effectively optimized.

The present invention discloses a novel cephalomedullar nail for preventing the backward tilt of head and neck bone blocks, and belongs to the technical field of medical fracture reduction instruments. The cephalomedullar nail with a device for preventing the backward tilt of head and neck bone blocks comprises a main rod, a main nail and an anti-backward tilt screw; the main rod is used to be inserted into the femoral shaft of the patient; the first end of the main nail is penetrated to connect the main rod, and the second end is penetrated to fix the fracture block of the femoral neck and femoral head; the first end of the anti-backward tilt screw is penetrated by the main rod, and the second end is penetrated by the femoral neck medulla, reaching the posterior edge of the anterior cortex of the femoral neck. The problem that the main rod is penetrated by the femoral shaft, and the main nail is penetrated by the femoral neck and femoral head, the cortical alignment is easily lost in the process of obtaining secondary stabilization after postoperative sliding, and the healing rate of the cortical support reduction to the fracture is low is solved. The second end of the anti-backward tilt screw of the present invention is penetrated by the femoral neck medulla, directly reaching the posterior edge of the anterior cortex of the femoral neck, playing a blocking role in preventing the cervical cortex of the head and neck bone block from tilting, falling back, and moving backward.

The invention relates to the technical field of orthopedic surgical instruments, in particular to a bone connecting and fixing assembly for fixing a small-size fracture block. Firstly, a guide pipe of a guide fixing piece with a connecting part is aligned with a bone block, then the bone block and a connecting bone are drilled through the guide pipe, and a first drilled hole is obtained; the bone needle slightly retreats, but most of the bone needle is left in the first drill hole, so that the bone block is connected to the connecting bone; the guide pipe is lifted to form a certain space with the fracture block, and a bone needle surrounding the space between the bone block and the guide pipe is inserted into the bending auxiliary part; bending the bone needle by using a guide pipe to be parallel to the connecting bone, withdrawing the bending auxiliary piece, continuously inserting or knocking the bone needle into the connecting bone through the bone block to enable the guide pipe to be close to and in contact with the connecting bone, drilling the connecting bone through the connecting part to obtain a second drill hole, penetrating a connecting piece through the connecting part and embedding the connecting piece into the second drill hole to obtain a second drill hole; the whole guide fixing piece and the bone needle are stably fixed to the connecting bone, and stable fixation of a small-size fracture block is achieved.

This invention discloses a surgical guide and its manufacturing method. The surgical guide includes: a plate body with at least two guide grooves penetrating the plate body and interconnected at an angle, the angle being the osteotomy angle; and a positioning part located at the edge of the plate body, used to locate the relative position between two bone fragments after osteotomy. Using this design, the guide grooves penetrating the plate body guide the osteotomy path of osteotomy tools during surgery, such as oscillating saw blades or milling cutters. Furthermore, the interconnected guide grooves provide the osteotomy angle, improving the accuracy of osteotomy. The positioning part can locate the relative position of the two bone fragments after osteotomy, thereby improving the accuracy of bone fragment positioning, thus improving the therapeutic effect of surgical correction of deformities and reducing postoperative pain. Additionally, the positioning part is located at the edge of the plate body, allowing for positioning using the edge of the plate body.

1. Name of the Design Product: Bone Needle (Quick Low Heat). 2. Use of the Design Product: To achieve fracture reduction, deformity correction, fixation, compression or traction of bone fragments by cooperating with an orthopedic external fixation bracket. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph Most Indicating the Design Key Points: Perspective view.

The utility model belongs to the field of medical instruments for lumbar intervertebral fusion in the spine orthopedics department, and particularly relates to a lumbar posterior lateral fusion cage. Comprising connecting plates and a cage body, the side of the cage body is open, the side wall of the cage body is in a sheet shape, the end of the cage body is in a U shape, through holes are evenly distributed in the side wall of the cage body, the connecting plates are arranged at the top end and the bottom end of the cage body, and connecting mechanisms are arranged on the connecting plates. The U-shaped cage body is of a three-dimensional hollow structure, autologous bones can be filled in the operation, a space is formed between an upper vertebral body and a lower vertebral body which are adjacent to each other in a fixing mode, therefore, the bone grafting cage is prevented from extruding deep nerves by bone grafting blocks, and high safety is achieved. The through hole is formed in the side wall of the cage body, blood supply in the vertebral fusion process is facilitated, and the vertebral fusion speed is increased.

The present invention belongs to the technical field of medical devices and discloses a greater trochanter extension osteotomy positioning guide device, comprising an arc-shaped guide plate and two femoral clamp assemblies, the guide plate is provided with a guide groove and a sliding groove, the femoral clamp assembly comprises a connecting plate, the connecting plate is connected to a holding rod and two clamping assemblies, the holding rod is connected to an infrared aimer, the clamping assembly comprises a connecting shaft, the connecting shaft is connected to an adjusting nut and a limit block, the adjusting nut is fixedly connected to an arc-shaped clamping claw, the clamping claw is provided with a guide hole, the two clamping assemblies are arranged in a mirror-symmetrical manner about the holding rod, and the two femoral clamp assemblies are arranged in a mirror-symmetrical manner about the guide plate; the present invention utilizes a holding rod to be connected to the adjustable diameter femoral clamp assembly, utilizes a guide groove to assist in osteotomy, the osteotomy operation is simple, the positioning is accurate, the osteotomy is performed at the optimal position, and the probability of fracture of the osteotomy block due to weak bone, movement and non-healing of the osteotomy block, and other adverse conditions is reduced.

The utility model relates to a pair of calcaneus reduction forceps. The pair of calcaneus reduction forceps comprises a first clamp body, a second clamp body, a first forceps body connected to the first clamp body and a second forceps body connected to the second clamp body, the second plier body is rotationally connected to the first plier body. The second clamp body and the first clamp body are oppositely arranged, the surface, facing the second clamp body, of the first clamp body is in a concave face shape, and the surface, facing the first clamp body, of the second clamp body is in a convex face shape. The first clamp body is provided with a front end and a tail end which are oppositely arranged, and the second clamp body is provided with a front end and a tail end which are oppositely arranged. The first clamp body is provided with a top end and a bottom end which are oppositely arranged, and the second clamp body is provided with a top end and a bottom end which are oppositely arranged. The distance between the front end and the tail end of the first clamp body ranges from 6 cm to 12 cm, and the distance between the top end and the bottom end of the first clamp body ranges from 2 cm to 8 cm. The distance between the front end and the tail end of the second clamp body ranges from 5 cm to 11 cm, too large pressure intensity is prevented from being generated on the local part of the calcaneus, and the crushed bone blocks are prevented from being further crushed in the clamping and resetting process.

The invention discloses a bone holder for femoral subtrochanteric osteotomy, which comprises a clamping mechanism and a guide mechanism, and is characterized in that the clamping mechanism comprises a measuring side rod, sliding sleeves slidably mounted at the two ends of the measuring side rod, adjusting knobs rotatably mounted at one ends of the sliding sleeves, and connecting rods arranged at the side ends of the sliding sleeves; the fixing clamp is mounted at the tail end of the connecting rod; the guide mechanism comprises a connecting mechanism detachably connected to the measuring side rod, a placement block arranged at the side end of the connecting mechanism, a plurality of guide grooves formed in the placement block at equal intervals, and cutting tools clamped in the guide grooves. After a bone block is cut off, two smooth anastomosis surfaces at the broken ends can be provided, so that fracture healing is facilitated, and postoperative recovery is accelerated; and secondly, by stably clamping the wounded femur and limiting the femur in a single direction, the rotation that the broken ends of the cut femur get close to each other during splicing can be avoided.

The invention discloses an automatic dissimilar blocky bone cutting and finishing mechanical device, and relates to the technical field of blocky bone finishing equipment, the automatic dissimilar blocky bone cutting and finishing mechanical device comprises a finishing table, two connecting belts are mounted at the rear end of the finishing table, and a first mounting groove and a second mounting groove are symmetrically formed in the upper end of the finishing table; blocky bone fixing bases are mounted in the first mounting groove and the second mounting groove, and a scanning instrument is mounted in the second mounting groove. According to the external control platform, clinical CT data of a patient is imported, a virtual three-dimensional model of the required bone mass is designed, and a bone block trimming path is set. And by precisely controlling the operation of the device, the personalized xenogeneic blocky bone material is obtained through finishing. By using the device, the time for trimming bone blocks beside a clinical chair can be shortened, operative wounds are reduced, the occurrence rate of infection and the like is reduced, the device can be better attached to the bone surface, and osteogenesis of the bone blocks is promoted.

The invention provides a face deformation prediction method and device, a terminal and a storage medium. The method for predicting facial deformation comprises the following steps: scanning a face through cone beam computed tomography (CBCT) to obtain an image of a maxillofacial tissue structure; based on the image, acquiring first position information of the bone tissue and the motion tracking plate as a whole; second position information and third position information of the motion tracking plate and the artificial texture moving along with the mandibular motion are obtained through a three-dimensional visual system; obtaining a conversion coefficient between the first position information and the second position information; acquiring fourth position information of surface nodes of the bone tissue and the motion tracking plate as a whole; training the neural network model to obtain a trained neural network model; and based on the movement design of the bone block position, obtaining the predicted movement information of the facial artificial texture feature points. The method can be used for predicting the facial deformation of the operation, and is good in real-time performance and high in precision.

This invention provides an arthroscopic tool for locating and reducing tibial plateau fractures, belonging to the field of medical device technology. The tool includes a positioning component for determining the X-position of the collapsed bone fragment and a guide calibration component for guiding the guide pin. The positioning component includes a first positioning arm, a second positioning arm, and a protrusion. The guide calibration component and the second positioning arm are located on the same side of the first positioning arm, and the second positioning arm is rotatably connected to the first positioning arm via a rotating component. The first and second positioning arms are connected by a rotating component, allowing the second positioning arm to be angled according to the patient's anatomical structure to accommodate individual differences. Furthermore, by setting the guide calibration component, the guide sleeve is always oriented towards the protrusion, maintaining the accuracy of the guiding path even when the first and second positioning arms rotate relative to each other.

The utility model provides an osteotome, which belongs to the technical field of medical instruments and comprises an osteotome structure, the osteotome structure comprises a drill rod and a drill bit, the drill rod is movably connected with the drill bit, one end of the drill rod is a handle, the other end of the drill rod is a threaded head of a conical structure, and the threaded head penetrates through an opening on one side of the drill bit. According to the bone chisel, in the process of treating a bone tumor patient, medical staff can rapidly cut bone blocks from bone substances, obtain needed samples and conduct detection, operation steps are optimized, more labor is saved, convenience is achieved, operation efficiency is improved, the size of the bone chisel can be designed according to needs, the bone chisel can be applied to large animal bone defect modeling, the structure is simple, and operation is convenient. 3D printing equipment can be used for manufacturing, and the cost is low.

The invention provides an elliptical bone extractor, which belongs to the technical field of medical equipment, and comprises a grip and an outer rod, the grip is connected with a mounting rod, the side wall of the grip is fixedly connected with a knocking end, one end of the outer rod is provided with a bone extraction end, one end of the grip is provided with a knob, and one end of the knob is provided with a screw rod and a sliding rod; the pushing assembly is used for sending out the diseased bone from the interior of the bone taking end; the limiting assembly is used for adjusting the position of the fixed pushing assembly; the multi-specification detachable elliptical bone taking end is adopted to adapt to various lesion areas, and the observation opening and the scale marks are matched to improve the bone taking accuracy and reduce damage to healthy tissues; the limiting assembly is connected with the threads, operation and bone taking end replacement are more convenient and faster, a separating rod of the pushing assembly is matched with electromagnetic positioning and a reset spring, adhered bone blocks are automatically stripped, the falling problem is solved, a push plate groove is attached to the bone blocks, stress is uniform, fragmentation is prevented, and manual operation is reduced.

The present invention discloses a multifunctional femoral stem prosthesis, comprising an upper base, a hollow body, and a lower cone, which is an "inverted" cone from top to bottom; the hollow body is composed of four metal vertical bars and a metal vertical net, the tops of the four metal vertical bars are fixed to the bottom edge of the upper base, and the bottoms are fixed to the top edge of the lower cone; bone fragments are placed in the hollow body; a vertical interval is provided between two adjacent metal vertical bars, and a metal vertical net is provided inside the interval. It can be seen from the structure of the invention that by arranging a hollow body on the prosthesis, bone fragments are placed therein, so as to achieve postoperative healing of bone fragments and proximal femoral bone, play a role in bone grafting and healing, and prevent the prosthesis from loosening and sinking. At the same time, the two opposite intervals on the left and right of the hollow body are set to be empty, which can help to fit the steel plate to the outside of the fracture after secondary injury and fracture, and then screw into the two opposite intervals on the left and right to lock, so as to achieve reliable reduction and fixation and long-term firm fixation in the later stage.

Implant for use in tibial plateau leveling osteotomy (TPLO) surgery, particularly for a dog or cat, wherein the implant (10) is attached to the tibial body, particularly to a medial surface (58) of the tibia (20), and to the tibial head (44) after circular segment-shaped incision and rotation of a caudal fragment (46) by screws (62a, 62b) through screw holes (64a, 64b) extending along a screw hole axis (a, a1, a2, a3) from a medial surface (12) to a lateral surface (14), comprising a proximal head section (24), a cranial section (28) and a caudal process (26).

The present invention provides a bone plate assembly for use with a bone structure, wherein the bone plate assembly includes: a first curved plate body, the first curved plate body protruding away from the bone structure; a second curved plate body connected to the first curved plate body, the second curved plate body protruding toward the bone structure, wherein the second curved plate body is connected to the midpoint of one side of the first curved plate body; and a filler fixture connected to the first curved plate body and / or the second curved plate body. The technical solution of the present application effectively solves the problem of poor fixation effect when bone fragments are fixed to the whole bone in the related art.

Provided are a medical ultrasonic scalpel, a medical ultrasonic scalpel system, and a robot-assisted ultrasonic scalpel system, belonging to the technical field of medical instruments. The medical ultrasonic scalpel comprises a scalpel head (10). The scalpel head (10) is provided with a first end face (101) and a cutting groove (102). The cutting groove (102) passes through the first end face (101), and the cutting groove (102) allows the first end face (101) to form at least one annular cutting face (103). During the cutting or fragmentation of a bone tissue, the bone tissue corresponding to the position where the cutting groove (102) is located does not make contact with the cutting face (103), that is, it is not needed to cut or fragment the bone tissue corresponding to the position, but the bone tissue corresponding to the periphery of the cutting groove (102) makes contact with the cutting face (103) so as to be cut or fragmented. In this way, the cutting face (103) creates a relatively small area of cutting or fragmentation on the bone tissue, but can still cut or fragment large bone pieces. Additionally, since the cutting face (103) creates a smaller area of cutting or fragmentation on the bone tissue, cutting or fragmenting bone pieces of the same size takes less time, achieving higher working efficiency.