51 results about "Costal cartilage" patented technology

A surgical device for capturing, positioning and aligning portions of a severed human sternum via positioning around the costal cartilage portion of each of a paired set of ribs located on opposite sides of the severed sternum while simultaneously contacting and substantially surrounding the anterior and posterior portions of the sternum comprising impermanently joined insertion and insertion guide attachment members, each of the members having first and second end portions, first and second side portions, a body portion, anterior and posterior surfaces, two crescent formed leg portions with angularly displaced foot portions, a plurality of sternum, rib and costal cartilage engagement surfaces and, a rotary lock member pivotally attached to the insertion guide member, and further comprising a capturing mechanism having angularly displaced teeth-like structures on a first side cooperating with reciprocating teeth like structures integrated on a first side of the insertion member to position, secure in place and operatively combine the insertion member, rotary lock and insertion guide members.

A double-bladed cutting device providing a practical method for obtaining costal cartilage specimens in both an operating room and research setting. The device reduces the skill and time required to fashion cartilage slices, while increasing the uniformity of the cut specimens. Furthermore, via an adjustable guide, slices can be obtained precisely from the central core of the rib. Although specimen lengths up to 4 cm are preferred, longer lengths can be attained without modification of the device. The cartilage specimen may be held in place within the device via means of compression or tension.

The invention discloses a funnel chest orthopaedic surgery simulation method; chest three-dimension visualization bone models and costal cartilage models are respectively processed by face mesh division, and the mesh is optimized; a mesh conversion is used on the basis of mesh optimization, and a chest model is converted into a body mesh from a face mesh; rib, costal cartilage and breast bone are respectively material-evaluated, and skeleton body mesh model of each part is assembled so as to obtain a complete chest three-dimensional mechanical model; boundary conditions and loading force moment are determined, and the chest model is processed by finite element analysis so as to obtain the stress, strain and displacement conditions of each skeleton part under the action of different external forces; the incision position, support plate material, fixing method and supporting force moment of funnel chest surgery are simulated so that the success ratio of funnel chest surgery is increased to over 98% from 70-90% of the prior art.

The invention relates to the field of orthopedic medical devices, and provides an adjustable costal cartilage cutter and an ear and nose surgical instrument. The adjustable costal cartilage cutter comprises a fixing frame and a knife holder, the knife holder is located above the fixing frame and connected with the fixing frame, and the knife holder is provided with a blade. The holder is providedwith a clamping assembly for fixing the cartilage and a tray for placing the clamping assembly, and the tray is provided with a sliding slot perpendicular to the direction of the blade. The clamp assembly is provided with a slider that cooperates with the chute, the knife holder being movable in a direction toward or away from the mount and cutting the cartilage within the clamp assembly. Throughchanging the position of the cartilage to be cut relative to the blade by moving the cartilage to be cut, a blade can cut cartilage of any desired thickness, which is more operative. The ear and nosesurgical instrument includes the above-described adjustable costal cartilage cutter, which can cut cartilage quickly and cut quickly. One blade is capable of cutting cartilage of any desired thickness, which is easier to operate.

The invention discloses 3D printed bio-ink based on costal cartilage as well as a preparation method and application thereof, and belongs to the technical field of biomedical materials. The 3D printedbio-ink comprises costal cartilage powder, photocurable hydrogel and phenyl-2,4,6-trimethylbenzoyl lithium phosphonate, and an artificial auricle can be successfully prepared by adopting the 3D printed bio-ink through a reverse engineering system and a photocurable 3D printing technology. The 3D printed autologous costal cartilage auricle prepared by the 3D printed bio-ink has the advantages of high adaptive individuation, simple and fast preparation process, high appearance precision, full utilization of donor autologous materials, great reduction of costal cartilage taking amount and good biocompatibility and tissue reconstruction capability, and has great clinical application value in a microtia reconstruction operation.

The invention discloses a biomimetic costal cartilage prosthesis implant and a preparation method thereof, as that costal cartilage prosthesis implant is integrally in the shape of a strip, comprisesan intermediate elastic structure and a two-end fixing structure, wherein the elastic structure in the middle of the costal cartilage prosthesis is a mechanical wave structure, a reticular structure or a spiral structure, and the elastic coefficient of the costal cartilage prosthesis can be changed according to different implant positions by changing parameters of the intermediate elastic structure. The costal cartilage prosthesis implant has two end fixing structures, corresponding ribs and sternum, and has a structure for mounting fixing substitutes. The costal cartilage prosthesis implant has two end fixing structures. The costal cartilage prosthesis implant provided by the invention has mechanical properties close to the real costal cartilage, It can be used in combination with sternalrib prosthesis to improve the physiological function of sternal rib prosthesis after replacement in personalized chest wall bone reconstruction surgery, effectively reduce the postoperative respiratory function inhibition of clinical problems, and has a positive effect on postoperative recovery of patients.

The invention provides a method and device for preparing a nasal prosthesis, and relates to the field of nasal prosthesis preparing. The method comprises the following steps that an original three-dimensional image of a nose is obtained; according to the original three-dimensional image, the three-dimensional simulation image after processing the nose is constructed; the nasal prosthesis is determined based on the original three-dimensional image and the three-dimensional simulation image; according to the image of the nasal prosthesis, a printing command is sent to a printing device so that the three-dimensional model of the nose prosthesis is printed by the printing device; the nasal prosthesis is obtained by processing the autogenous costal cartilage in a carving mode based on the three-dimensional model of nasal prosthesis. According to the method and device for preparing the nasal prosthesis, the technical problem that the rhinoplasty effect is not ideal in the prior art is solved.

The invention relates to a cartilage slicing knife. The cartilage slicing knife is used for cutting cartilage pieces from a costal cartilage, and comprises a cutting knife and a base, wherein the cutting knife is a dual-edge cutting knife with two knife blades; a gap of which the width corresponds to the thickness of each cartilage piece is formed between the two knife blades; a material placing groove allowing the costal cartilage to be placed is formed in the base; and a cutting empty groove of which the width corresponds to that of the cutting knife is formed in the bottom of the material placing groove. The cartilage slicing knife disclosed by the invention has the beneficial effects that the dual-edge cutting knife is adopted, so that cutting and shaping can be performed in one time,and the operation is convenient and high in efficiency; the material placing groove is in sliding cooperation with a knife bar, so that the stability of the moving of the cutting knife in the horizontal direction is guaranteed; a cutting knife guide block for elastically compacting the costal cartilage from the front end is arranged, so that the costal cartilage can be stably positioned and fixed;and a knife blade guide groove which is in sliding cooperation with the knife blade is formed in the cutting knife guide block, and can be used for supporting and positioning the knife blade in the cutting process, so that the situation that in the cutting process, the knife blade is deformed is avoided, the cutting effect and the cutting precision are guaranteed.

The invention provides a costal cartilage slicer. The costal cartilage slicer comprises a base, a knife holder, a fixing structure, a chuck structure, a knife rest and a stop block, wherein the kniferest is used for detachably mounting a blade; the knife holder is arranged on the base; one end of the knife rest is rotationally connected to the knife holder, so that the blade is driven to cut a costal cartilage block through rotation of the knife rest; the stop block is arranged on the lower side of the knife rest; the chuck structure can move in a reference direction relative to the fixing structure; the fixing structure is arranged on a first side of the chuck structure in the reference direction; the stop block is located on a second side of the chuck structure in the reference direction; and the costal cartilage block to be sliced can be tightly clamped between the stop block and the chuck structure. The thickness of a costal cartilage slice sliced by the costal cartilage slicer can be uniform and consistent.

The present invention relates to cartilage morcellator for cutting various kinds of cartilage (including costal cartilage and the like) into small pieces by using an elevating-type cutting knife having a simple configuration such that same can be supplied to a plastic surgery part. The cartilage morcellator comprises: an upper body (2) and a lower body (3), which are separated from/coupled to each other; an upper groove (4) and a lower groove (5) formed on the upper and lower portions of the upper body (2), respectively; an isolation portion (6) formed between the upper groove (4) and the lower groove (5); a through-hole (7) formed perpendicularly at the center of the isolation portion (6); an elevating rod (8) fitted to the through-hole (7); a morcellating knife (10) fixed to the bottom surface of the elevating rod (8), the morcellating knife (10) having a zigzag-shaped knife portion (102) and a blade portion (103) formed thereon; a spring (11) fitted to the outer periphery of the elevating rod (8); and a striking portion (12) fastened to the upper portion of the elevating rod (8) and elastically supported by a spring (11). The cartilage morcellator further comprises: a morcellation chamber (13) formed in the lower body (3) and provided with a bottom; a prop plate (14) formed on the bottom of the morcellation chamber (13); a first gripping portion (21) formed on the outer periphery of the upper body (2) so as to have an outer diameter smaller than the outer diameter of the upper end of the upper body (2); a second gripping portion (22) formed to have an outer diameter larger than the outer diameter of the first gripping portion (21); and a plate body (101) having a predetermined thickness, which is fixed to the upper portion of the knife portion (102).

The invention discloses a medical instrument, and specifically discloses an electric costal cartilage cutter. The electric costal cartilage cutter is characterized by comprising a handle, wherein, the handle is internally equipped with a motor; the motor is connected with a power plug; a rotating shaft of the motor is connected with a direction converter; the front end of the direction converter is connected with a reciprocating center shaft; and the front end of the reciprocating center shaft is equipped with a cutter. In the invention, only an incision of 2-2.5cm is opened at the position of costal cartilage at the chest of a patient while cutting the costal cartilage, and then one or more than one of costal cartilage pieces can be easily removed; and the costal cartilage pieces or costal cartilage strips has regular shape and consistent thickness, thus being beneficial to engraving, causing little wound of the patient, achieving quick recovery, alleviating pain of the patient and obtaining obvious curative effects.

The invention relates to the technical field of medical instruments, and discloses a cartilage extractor for plastic surgery. The cartilage extractor comprises a shell with a handle, wherein a triggerrod is hinged on the shell; an extension pipe is arranged at the front end of the shell, a hook is arranged at one end, far away from the shell, of the extension pipe, and the front end of the hook is a round blunt metal sheet; a force transmission rod is inserted into the extension pipe, one end of the force transmission rod extends into the shell, and a blade is arranged at the other end of theforce transmission rod; a plurality of tooth sockets are arranged at the end of the force transmission rod positioned in an inner cavity of the shell; and an edge of the hinge end of the trigger rodis provided with teeth which can be meshed with the tooth sockets. According to the invention, a costal cartilage is hooked by the hook, and then the trigger rod controls a blade to cut the costal cartilage, so that the stripped costal cartilage can be hooked and cut. The whole process can be operated by one person, operation is simple, and operation time is shortened. In addition, the blade partof the blade can be attached to the inner wall of the hook, so that the costal cartilage can be completely cut at one time, and safety of a cutting process and integrity of the broken end of the costal cartilage are improved.

The invention discloses a nasal plastic stent. The nasal plastic stent comprises a stent body; the stent body comprises a nose bridge, a nasal columella and a nasal tip cap; a left extension part anda right extension part are arranged on the two sides of the nose bridge respectively; the nasal tip cap is arranged at the front end of the nose bridge, and the nasal columella is arranged at the front end of the nose bridge and located at the lower end of the nasal tip cap; the left extension part and the right extension part are adjustably connected with the nose bridge respectively; the stent body comprises the nose bridge, the nasal columella and the nasal tip cap; the left extension part and the right extension part are adjustably connected with the nose bridge respectively and are arranged in the length direction of the nose bridge; compared with a thick and heavy costal cartilage stent, the nose bridge in the stent body can be light and thin; the left extension part and the right extension part can play a role in enhancing the stability in the length direction of the nose bridge, so that the problem of the bending characteristic of the costal cartilage is solved, the postoperative bending deformation of the costal cartilage nose bridge is avoided, and the phenomena that the postoperative nasal columella is too thick and too hard or moves backwards, the nasal tip is too hardand too top, and a stone-like nose is formed are avoided.

The invention discloses a composite artificial stent for all auricle reconstruction. The composite artificial stent comprises a stent and a silica gel body, the stent comprises an auricle bulge and a metal body, and the metal body is composed of a plurality of groups of metal strips in different directions. The composite artificial stent is made of the memory alloy, a layer of silica gel body is poured on the outer surface of the composite artificial stent, the elasticity of the composite artificial stent is improved, meanwhile, the compatibility of the composite artificial stent and the human body is better, and the composite artificial stent can be produced in batches. The composite artificial stent is provided with structures similar to auricle helixes, helix feet, antihelixes and the like. The shape and the size of the auricle stent are set according to the shape and the size of the normal adult auricle obtained through big data, the size layering code number is set, so that the artificial auricle stent is closer to the structure of a real auricle, the number can be directly selected for use, one-by-one customization by using a 3D technology according to the data of each patient is not needed, the costal cartilage does not need to be cut out through a thoracic operation, more convenience and rapidness are achieved, the operation and manufacturing time and the equipment cost are reduced, and meanwhile, the pain of the patient is relieved, and various costs are reduced.

The invention relates to the field of medical instruments, in particular to a costal cartilage cutting and crushing device. The device comprises a shell and a cartilage placement part which are detachably connected, and a cavity of the shell sequentially comprises a pressing cavity, a cleaning cavity and a transition cavity from the top to the bottom; a cutting assembly is arranged in the shell and comprises a gang tool body and a cutting part which are connected, the gang tool body extends into the cleaning cavity from the pressing cavity, the cutting part is arranged in the cleaning cavity, a cleaning part is arranged in the cleaning cavity, and the cleaning part sequentially comprises a gang tool body passing groove and a cutting part passing groove which are communicated from top to bottom; a rotary pressing part is arranged at the end, away from the cartilage placement part, of the cutting assembly, and an elastic piece matched with the rotary pressing part is arranged on the cavity wall of the pressing cavity. According to the device, the operation time of a doctor in an operation can be effectively shortened, the fatigue degree caused by repeated operation processes can be reduced, the labor cost can be greatly reduced, and the device has a good industrialization prospect.