49 results about "Trephine" patented technology

Provided herein are reduction trauma screws comprising a headless insert into a substrate that couples to a reduction cap via a chosen lock structure (e.g., narrow threads, finger-trap locking, or a spiral bayonet mechanism). The cap or screw can include scaffolds with triply periodic minimal surfaces or folded-sheet architectures to promote bone in-growth. Additionally, a trephine channel may harvest autograft during insertion. Methods of implantation include aligning a drill guide, forming a borehole, and advancing a headless screw with a driver. The reduction cap is then engaged through a counter-torque approach, thereby achieving bone compression without further rotating the screw. The designs enable improved stability, straightforward revision, and adaptability for patient-specific anatomy.

The invention provides an extrascopic rotary bone grinding device for spine endoscopic surgery, and belongs to the technical field of machinery. The extra-scope rotary bone grinding device for the spine endoscopic surgery comprises a handheld part and a driving assembly fixedly connected to the outer end face of the handheld part in a locked mode, and is characterized in that the driving end of the driving assembly is in shaft connection with a shaft rod, a grinding head is integrally manufactured at the outer end of the shaft rod, a plurality of grinding teeth are arranged on the peripheral face of the grinding head in a staggered mode, and a toothed trephine is arranged at the outer end of the grinding head; the outer wall of the shaft rod is sleeved with a protective outer sleeve, a liquid injection component is arranged on the inner layer of the protective outer sleeve, a scrap capturing component is integrally manufactured between the inner wall of the protective outer sleeve and the outer wall of the shaft rod, the inner ring wall of the scrap capturing component is in interference fit with the outer wall of the shaft rod, and one end of the interior of the scrap capturing component is in clearance fit with the outer wall of the grinding head. And in cooperation with the protective outer sleeve, the liquid injection component and the debris capturing component, the accuracy, safety and convenience of bone tunnel expansion operation in the spine endoscopic surgery can be effectively improved.

The utility model discloses a cornea negative pressure suction trephine device for an eye library, which is a device for obtaining a cornea graft from an eyeball of a donor, and comprises an adsorption ring which is positioned on the eyeball above the cornea and a trephine which is sleeved on the periphery of the adsorption ring and can rotate relative to the adsorption ring, an annular adsorption face capable of being adsorbed to the eyeball in a negative pressure suction mode is formed on the end face of the adsorption ring, the trephine comprises a circular ring component and a circular cutting part formed at the far end of the circular ring component and used for annularly cutting the sclera, and the circular ring component is arranged on the periphery of the end, close to the annular adsorption face, of the adsorption ring in a sleeving mode. Thus, the cornea acquisition negative pressure suction trephine device for the eye library can be provided, the cornea acquisition negative pressure suction trephine device for the eye library is suitable for acquiring a cornea graft with uniform sclera tissue from a donor in a rotary cutting mode, and extrusion damage to cornea endothelial cells can be effectively reduced.

A femoral intertrochanteric fracture opening system is characterized by comprising a sleeve, a hollow sleeve core and a hollow trephine, an impact portion is arranged at one end of the sleeve, a plurality of sawteeth are arranged on the outer ring of the end of the other end of the sleeve, the inner diameter of the sleeve is the same as the outer diameter of the hollow sleeve core, a center hole is formed in the center of the hollow sleeve core, and the hollow trephine is arranged in the center hole. The sleeve is limited and fixed through the hollow sleeve core, and the hollow trephine is limited through the sleeve and the positioning guide pin, so that the accuracy of the opening position is ensured; according to the utility model, the trephine is used for opening, the force is uniform when the trephine is used for opening, and the outer surface of the trephine does not have the situation that the size of the outer surface of a conical drill is always changed, so that the situation that bone blocks on two sides of a fracture line are extruded in the opening process is avoided, and the serious defect that the bone can be extruded open by a traditional drill bit is overcome.

A surgical instrument for cutting intraocular tissue includes a body extending from a proximal end to a distal end, the body having an instrument section terminating at the distal end and handle section between the proximal end and the instrument section, a tip at the distal end comprising a cannula terminating at a trephine, an irrigation port in the instrument section proximate to the tip, an aspiration passage in communication between the cannula and an aspiration connector, and an irrigation passage in communication between the irrigation port and an irrigation connector.

There is provided a kit for performing socket shield technique, and methods for using the kit, wherein the kit may include a wheel bur, having a first working surface disc and a second working surface disc configured to smoothen and cut hard tissues of a tooth; one or more trephine burs with stoppers configured to cut a root canal to create a first tooth fragment and a second tooth fragment, wherein each stopper is compatible with each of the one or more trephine burs; a root fragment remover configured to extract the first tooth fragment and stabilize the second tooth fragment; a split end elevator having a v-shaped notch tip configured to remove the first tooth fragment; a cylindrical bur to control the thickness of the second root fragment; and a round bur configured to separate the second root fragment from unwanted fragments.

Systems and methods for determining IRA candidacy and optimizing autologous corneal graft location and orientation to standardize and improve IRA procedures. A novel digital virtual model (i.e., a digital twin) of the eye is provided that integrates corneal imaging, pachymetry, topography and limbus / white-to-white measurements, and automates key surgical variables such as trephine size, autologous corneal graft rotations, and curvature and thickness matching, reducing cognitive load on the surgeon and improving accuracy. The embodiments herein provide precise graft placement parameters to maximize the amount of clear cornea in the visual axis. By providing real-time, patient specific guidance, the present embodiments enhance surgical precision and visual outcomes.

The utility model discloses a visible trephine structure, which relates to the technical field of medical instruments and comprises a tubular column, the tubular column is a hollow tubular body, one end of the tubular column is provided with sawteeth along the circumferential direction, the other end of the tubular column is sleeved with a handle part, the end part of the tubular column penetrates through the outer wall of the handle part and is flush with the outer wall of the handle part, and the section of the handle part is arc-shaped. The tubular column is arranged along the axis of the tubular column. Compared with the prior art, the visible trephine structure has the advantages that the visible trephine structure can be used for rotary cutting conveniently, and endoscopic observation is facilitated.

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.

This invention discloses an anal fistula cutting device, comprising a left shell, a right shell, and a front shell. The left and right shells are symmetrically arranged to form a main chamber. The rear end of the front shell is fixed inside the main chamber, and the interior of the front shell is a cutting blade chamber. The cutting blade chamber is elongated and cylindrical, and the cutting blade moves back and forth within it. A drive assembly is installed in the lower part of the main chamber, a transmission assembly is installed in the middle of the main chamber, a cutting assembly is installed at the front end of the transmission assembly, a switch fixing plate is installed inside the main chamber, an activation assembly is installed at a corner inside the main chamber, and a return assembly is connected to the switch fixing plate. This anal fistula cutting device is simple to operate, avoiding extensive muscle and nerve damage caused by fistula endotomy, effectively separating fistula polyps, reducing postoperative complications, and alleviating the surgical intensity for doctors and the psychological stress for patients.

The utility model belongs to the technical field of trephine, and particularly relates to a multi-specification saw blade universal trephine which comprises a trephine body and an installation frame arranged on one side of the trephine body, a driving wheel is arranged at the front end of the trephine body, a V-shaped ring groove is formed in the driving wheel, an annular saw blade is arranged in the V-shaped ring groove, and the annular saw blade is arranged on the installation frame. A plurality of second annular grooves are formed in the outer wall of the annular saw blade, a pressing movable wheel is meshed with one side of each second annular groove and arranged on the mounting frame, an adjusting screw rod is arranged in each pressing movable wheel, and the other end of each adjusting screw rod is connected to the mounting frame. The utility model aims to provide a multi-specification saw blade universal trephine which is stable in structure, low in use cost and long in service life.

The invention belongs to the technical field of surgical instruments, and particularly relates to an anterior cervical surgery bone extraction distraction nail and distraction device capable of reserving vertebral bone. According to the anterior cervical surgery bone extraction distraction nail, a bone extraction cylinder of a bone extraction assembly is inserted into an outer sleeve, when the outer sleeve is anchored, a surgeon can operate a bone extraction handle, the outer sleeve is implanted into a to-be-distraction vertebral body, anchoring of the outer sleeve is completed, and in the implanting process of the outer sleeve, the bone extraction cylinder is inserted into the outer sleeve. A vertebral bone specimen cut by the trephine at the fixed end of the outer sleeve is reserved in the bone taking cylinder due to the opening of the open end of the bone taking cylinder and the internal thread line, when the bone taking assembly is taken down, the vertebral bone specimen can be separated from the outer sleeve along with the bone taking cylinder, the vertebral bone specimen is reserved and taken, the outer sleeve continues to be anchored on the vertebral body, and the vertebral bone specimen is taken out. The nail is used as a distraction nail. The whole bone taking process does not need to occupy extra operation time and space, anchoring of the distraction nail is completed while a vertebral bone specimen is reserved, and the cervical vertebra operation cannot be affected by bone taking.

1. The name of the design product: corneal visible trepan. 2. The use of the design product: the design product is used for drilling cornea in corneal transplantation operation. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view.

This invention relates to the field of biomedical technology, and more particularly to a miniature amniotic trephine device for macular hole surgery. It includes a support shell, on one side of which is slidably connected a ring-shaped array of blades. When fully extended, the ring-shaped array of blades will not extend beyond the adjacent side of the support shell. A power assembly for moving the ring-shaped array of blades is disposed within the support shell. A support assembly for temporarily supporting the surgical site is also disposed within the support shell. Two annular inclined plates and two annular guide plates are fixedly connected to the side of the support shell near the ring-shaped array of blades. This invention utilizes a ring-shaped array structure composed of multiple blades to form a standardized cutting profile, ensuring that the size and shape of the amniotic membrane slices obtained each time are within a predetermined range, thereby avoiding quality instability problems caused by variations in existing operations.

An apparatus and methods are provided for a trephine bone graft harvester for extracting morselized bone from patients. The trephine bone graft harvester includes a bone cutter affixed to an outer hub. The bone cutter comprises a hollow tube having cylindrical wall and a distal cutting edge. A bone graft collector is sheathed within the bone cutter. The bone graft collector includes a distal scoop adjacent to the distal cutting edge of the bone cutter. The distal scoop is configured to move morselized bone away from the distal cutting edge. An inner hub is affixed to the bone graft collector and coupled with the outer hub. The inner hub includes a proximal shank configured to be engaged with a rotary tool suitable for applying torque to the inner hub.

The surgical tool comprises a trephine and an endoscope, the trephine comprises a saw tooth head, a hollow pipe body, a clamping groove and a fixing bolt, the trephine is connected with a control structure in a clamping mode through the clamping groove, the fixing bolt is connected with the control structure, and the endoscope is arranged in the hollow pipe body. The control structure drives the fixing bolt to rotate along the axis of the trephine, so that the fixing bolt drives the trephine to rotate, and when the control structure drives the fixing bolt to rotate, the trephine is driven by the fixing bolt to rotate, so that target tissue in an operation area is removed through the sawtooth head. Meanwhile, when the trephine rotates to remove the target tissue, the endoscope provides an operation view field of an operation area. The trephine and the endoscope are connected with the surgical robot through the control structure, so that the surgical robot can control the trephine and the endoscope to carry out minimally invasive spine surgery, the surgery time is saved, and the surgery risk is reduced.

The application provides a PLR method for treating scars, and belongs to the technical field of medical surgery. 2 The method comprises the following steps in sequence: local swelling anesthesia, punching by 2 mm trephine at intervals of 3 mm, 2000 mJ / cm Dot laser, 9 Gy of radiotherapy each time for two days in succession, and external use of growth factors for bandaging. The trephine punching destroys the dense structure of the scar, creates a channel for the laser energy to penetrate and the growth factors to penetrate; the dot laser induces controllable thermal damage, starts the tissue repair mechanism; the radiotherapy precisely inhibits the activity of fibroblasts, significantly reduces the recurrence risk; the three are sequentially implemented, forming a treatment closed loop of physical destruction, biological stimulation and cell inhibition; the application synergistically acts through the triple mechanisms of physical destruction, photothermal remodeling and low-dose radiotherapy, significantly improves the curative effect, reduces the recurrence rate, and promotes tissue repair, has the advantages of standardized operation, high safety, good cosmetic effect and the like, and is suitable for clinical popularization.

A trephine is provided. The trephine includes a hole saw sized to accommodate an implant, the hole saw having: a cylindrical body having a proximal end, a distal end and an outer surface, a plurality of circumferentially spaced cutting teeth at the distal end of the cylindrical body, and a plurality of helical grooves on the outer surface of the cylindrical body; and a quick connect coupled to the proximal end of the cylindrical body for releasably connecting to a cooperating quick connector of a tool.

The invention relates to the technical field of medical instruments, in particular to an integrated trephine with cutting, bone separation and self-blade coating hemostasis functions. The trephine comprises a tubular body and far-end sawteeth of the tubular body, and is characterized in that a hemostatic material carrying structure is arranged on the outer wall of the trephine body, is a concave area formed in the outer wall and is provided with a one-way limiting structure; and the cutting surfaces of the sawteeth are inclined relative to the axis of the trephine. Before an operation, a hemostatic material is pre-filled in the structure; in an operation, when the trephine rotates to cut the bone, the one-way limiting structure can prevent the hemostatic material from returning and enable the hemostatic material to move downwards synchronously along with the trephine, the trephine can move transversely to the bone wound surface to scrape the hemostatic material and coat the hemostatic material on the bone wound surface, and continuous trephine cutting, bone separation and bone surface hemostasis are achieved. The trephine highly integrates cutting, bone separation and hemostasis functions into the trephine body, is convenient to operate, and can effectively reduce bleeding in an operation and improve an operation field.

The application discloses an endoscope visible ring saw for preventing bone from falling off, relates to the technical field of medical devices, and comprises a tubular saw column, a half-ring saw tooth, a rotating handle and a limiting part. The tubular saw column is provided with the half-ring saw tooth at one end, the rotating handle is installed at the other end of the tubular saw column, the limiting part is arranged on the inner side wall of the tubular saw column close to the half-ring saw tooth, and the limiting part is spiral. The limiting part is a groove arranged in the tubular saw column. The limiting part arranged on the inner side wall of the tubular saw column increases the friction between the cut bone and the inner side wall of the tubular saw column, so that the situation that the bone is easily fallen off from the ring saw and falls back to the operation field when a doctor withdraws the ring saw together with the bone in the ring saw from a narrow puncture working sleeve can be avoided.

The utility model relates to the technical field of dental instruments, in particular to a trephine torsion resistance testing tool which comprises a blade end fixing device and a rod portion fixing device, one end of the blade end fixing device is provided with a first clamping portion, and the other end of the blade end fixing device is provided with protruding teeth. A second clamping part is arranged at one end of the rod part fixing device, and a fixing hole is formed in the other end. According to the utility model, the convex teeth are arranged on the blade end fixing device to fix the toothed working part of the dental trephine, the fixing hole is arranged on the rod part fixing device to fix the rod part of the dental trephine, and the first clamping part and the second clamping part are respectively arranged on the blade end fixing device and the rod part fixing device and are used for clamping a torsion testing machine. The torsion testing machine is used for fixing one of the first clamping part and the second clamping part and applying force to the other clamping part to enable the other clamping part to rotate relatively, so that the toothed working part and the rod part of the dental trephine are driven to rotate relatively, and a torsion resistance test is carried out.

The invention relates to the technical field of keloid resection, and discloses a multi-bit minimally invasive surgery device for keloid trephine resection, which comprises a handle, and further comprises a rotating disc rotationally mounted at the front end of the handle; the cylinder grooves are annularly and uniformly formed in the rotating disc; a connecting cylinder is movably inserted into each cylinder groove, a ring drill bit is arranged at the first end of each connecting cylinder, and the second end of each connecting cylinder is detachably connected with the inner shaft; the inner shaft is movably and telescopically arranged in the handle and can freely rotate; according to the multi-drill-bit minimally invasive surgery device for keloid trephine resection, the rotating disc is arranged at the front end of the handle, and the multiple barrel grooves are annularly and evenly distributed in the rotating disc to integrate trephine bits with different diameters, so that an operator can rapidly select and switch the matched trephine bits in the same minimally invasive surgery process; therefore, the adaptive capacity of the device to keloids with different sizes and shapes is improved, and the replacement frequency of instruments in an operation is reduced.

The present invention relates to a medical tool (1) configured as a rotatably driven tool, particularly as a cutting tool, preferably as a trephine tool, and having a drive section (3) connectable to a medical device (2) for torque transmission in particular form-fitting, and a cutting section (4) torque-transmittably coupled to the drive section (3), characterized in that the tool (1) has an electronic structure group (7) configured to be activated by connecting the tool (1) to the medical device (2), preferably by an insertion process of inserting the tool (1) into the medical device (2), and / or by decoupling the cutting section (4) from the drive section (3).

The utility model relates to the technical field of medical instruments, in particular to a donor cornea trephine which comprises a carrying table, a pressure ring base and a drilling tool base. A trephine inner cavity is formed in the carrying table, an annular groove is formed in the middle of the upper surface of the carrying table, a center hole is formed in the center of the bottom face of the annular groove, first air holes and positioning air holes are evenly distributed around the center hole, and the first air holes are used for adsorbing corneas; when the cornea is adsorbed, the pressure ring base is positioned above the carrying table and is used for sealing the positioning air hole; when cornea cutting is carried out, the drilling tool base is located above the carrying table, a second through hole is formed in the middle of the drilling tool base, and a drilling tool used for cutting the cornea of a donor is arranged in the second through hole. When negative pressure is generated in the inner cavity of the trephine, the pressure ring base seals the positioning air hole, the first air hole adsorbs a donor cornea, the donor cornea is tensioned and flatly attached to the bottom face of the annular groove, and the phenomenon that the cutting diameter and the regular circle of a drilling tool are affected due to the fact that the donor cornea folds is avoided.

The invention relates to a medical osteochondral acquisition system which comprises a trephine and a positioning sleeve, and the positioning sleeve is provided with an inner cavity matched with the trephine; wherein a liquid injection pipe is arranged on the side wall of the positioning sleeve, an injection opening is formed in the position, on the outer side of the positioning sleeve, of the liquid injection pipe, the liquid injection pipe is communicated with the inner cavity through a communication opening in the side wall of the positioning sleeve, and injection flows into the inner cavity of the positioning sleeve through the injection opening. Injection liquid is injected into the positioning sleeve through the liquid injection pipe, the cooling effect can be achieved in the clinical osteochondral transplantation operation process, the activity of the obtained tissue is improved, due to the integrated design of the liquid injection pipe and the positioning sleeve, the operation complexity is not additionally increased, and practicability and convenience are both considered.

The invention provides a belt tightness adjusting device and a trephine, and relates to the technical field of cutting tools, the belt tightness adjusting device provided by the invention comprises a shell, an operation assembly and a tensioning mechanism; the tensioning mechanism is movably connected to the interior of the shell; the operation assembly is movably matched with the shell, the outer end of the operation assembly extends out of the shell, the inner end of the operation assembly extends into the shell and is connected with the tensioning mechanism, and the operation assembly is configured to drive the tensioning mechanism to move relative to the shell so as to adjust the position of the tensioning end in the tensioning mechanism. According to the belt tightness adjusting device, the position of the tensioning end can be adjusted from the outside of the shell, the shell does not need to be disassembled, time and labor are saved, and the phenomenon that parts are lost and forgotten to be installed in the adjusting process is avoided.

The utility model relates to the technical field of medical instruments, and discloses a micro trephine device for seed coats of micro coats, which comprises a trephine gun handle, a micro drill bit is arranged at the left end of the trephine gun handle, the micro drill bit is composed of a hollow cover, a plurality of trephine bits and a connector, the number of the trephine bits is larger than that of the hollow cover, and the number of the trephine bits is larger than that of the connector. The right ends of the multiple ring drill bits are evenly distributed on the left side of the hollow cover in a matrix mode, and the left end of the connector is located in the middle of the right side of the hollow cover. The trephine gun handle, the micro drill bit, the air guide hose, the positive and negative pressure dual-purpose air pump and the air pump controller are matched, the air pump principle is used, in the micro skin taking stage, when the micro drill bit is used for micro skin taking, and when skin taking and seed skin taking are conducted through negative pressure and mechanical cutting force, the micro drill bit pierces into granulation tissue of a wound surface, and the purpose of skin taking is achieved. The miniature skin is planted in granulation tissue by using positive pressure, the method is processed and mechanized, better operability is improved, operation requirements are simple, popularization is convenient, and better service is provided for patients.

The utility model relates to the technical field of drilling machining equipment, and particularly discloses a detachable tapper which comprises a fixing plate, a lifting device arranged below the fixing plate, an angle adjusting assembly installed below the lifting device, a tapping motor arranged below the angle adjusting assembly and a tapping tool installed below the tapping motor. The angle adjusting assembly is connected with the trepanning motor through a collecting and processing device, and the fixing plate is connected with the lifting device through a connecting and installing device. Through the arrangement of the collecting and processing device, a worker can collect and process chippings and dust generated during tapping through cooperation of structures such as filter cloth and a draught fan when needed, and therefore the possibility that the surrounding environment and the worker are affected by adverse effects is reduced; and the connecting and mounting device is arranged, so that a worker can quickly disassemble the structures such as the lifting device through the cooperation of the structures such as a clamping block and a compression spring when needed, and the difficulty of disassembly work is reduced.

The invention relates to the technical field of medical cosmetology, and discloses a small-range scar fine repair skin flap transfer and reconstruction system based on a trephine skin grafting technology, which comprises a preoperative evaluation module, a trephine equipment module, a skin flap processing module, a transfer and reconstruction module, a postoperative management module and a safety monitoring module, the preoperative evaluation module comprises a three-dimensional scar scanning unit, a blood supply analysis unit and a positioning navigation unit, and integrates the preoperative evaluation module, a trephine equipment module, a flap processing module, a transfer reconstruction module, a postoperative management module and a safety monitoring module; the small-range scar fine repair skin flap transfer and reconstruction system of the trephine skin grafting technology has high automation, intelligence and precision, the operation efficiency and the success rate are remarkably improved, and a complete scar repair process is formed.

The utility model discloses a hard alloy circular saw blade for a trephine, which relates to the technical field of cutting and comprises a trephine body, a plurality of groups of saw teeth arranged circumferentially at equal intervals are arranged on the trephine body, each saw tooth consists of a left helical tooth, a right helical tooth and a sharp tooth, the right helical tooth is positioned between the left helical tooth and the sharp tooth, and the cutting edge angle epsilon of the left helical tooth and the right helical tooth is 5 degrees. The tool cutting edge angle epsilon of the sharp teeth is 15 degrees, the sharp teeth are in left-right inclined symmetrical design, centripetal angles with Tp being 1 degree are designed on the side faces of the left inclined teeth, the right inclined teeth and the sharp teeth, and circumferential angles with Tr being 3 degrees are designed on the side faces of the left inclined teeth, the side faces of the right inclined teeth and the side faces of the sharp teeth. Due to the design of the tool cutting edge angle, the cutting amount can be uniformly distributed during cutting, the cutting efficiency is improved, meanwhile, tipping during cutting is avoided to the greatest extent, and the service life of a product is prolonged; due to the design of the centripetal angle and the circumferential angle, the friction of the tooth side face to the workpiece is reduced, the cutting resistance is remarkably reduced, the temperature of the workpiece is reduced, and it is guaranteed that the cutting face of the workpiece such as wood, aluminum and plastic is smooth and free of focal marks.