86 results about "Trephine" patented technology

The utility model relates to a trephine for a minimally invasive spine surgery, belongs to the technical field of medical instruments, and solves the technical problem that a manual trephine and an electric trephine for the minimally invasive spine surgery cannot be universally used. The trephine comprises a saw handle, a saw rod and saw teeth, the saw rod is rotatably mounted on the saw handle; the saw handle comprises a box body, an electric assembly, a manual assembly and a gear shifting assembly; the gear shifting assembly comprises a first ring body, a second ring body and a bearing. The first ring body is rotatably connected with the box body, the second ring body is slidably connected with the box body, the second ring body can drive the saw rod to move in the axial direction by rotating the first ring body, and the saw rod is matched with the manual assembly or the electric assembly so as to enter a manual gear or an electric gear. The trephine disclosed by the utility model can be used for carrying out manual ring cutting and electric ring cutting, and switching between an electric gear and a manual gear can be carried out without dismounting, so that the operation steps of a doctor are simplified, and the efficiency of a foramen vertebroplasty operation under a foramen vertebroscope is improved.

The utility model relates to the technical field of surgical instruments, in particular to a channel set for assisting endoscopic operation, which comprises a stabilizing ring, the left side surface of the stabilizing ring is fixedly connected with a first grip, the inner side wall of the stabilizing ring is provided with a protective sleeve, and the lower end surface of the protective sleeve is provided with a semicircular spine; the outer trephine body is installed in the protective sleeve, the lower end of the outer trephine body is fixedly connected with a connecting ring, and twelve sets of edged sawteeth are arranged on the lower surface of the connecting ring. A bone is sawed open through the edged sawteeth, then the barrel is inserted from the inner diameter of the endoscopic trephine body so that the internal condition can be observed, and then the bone grasping forceps are inserted from the inner diameter of the spine endoscope so that the cut tissue can be taken out. The whole cutting process of the edged sawteeth and the process that the bone grasping forceps take out the tissue are completed under observation of a spine endoscope, and the whole operation is convenient.

The utility model relates to the field of trephine, in particular to a water-cooling trephine with a saw blade convenient to replace, which comprises a shell assembly and a trephine saw blade, an assembling mechanism is arranged at the end of the shell assembly, the trephine saw blade is detachably arranged on the assembling mechanism, and a driving mechanism for driving the trephine saw blade to work is arranged in the shell assembly. According to the water-cooling trephine with the saw blade convenient to replace, the pressing force of the trephine saw blade can be adjusted, so that the problems that the saw blade swings and fractures in the cutting process and certain danger is caused to workers due to the fact that the pressing force on the saw blade is too large or too small, and the cutting efficiency is affected due to the fact that the cutting force is insufficient due to too large friction force are solved. And meanwhile, the saw blade is easy and convenient to disassemble and assemble, and when the saw blade goes wrong, the saw blade is convenient to replace.

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 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 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.

The utility model relates to a washable trephine and a navigable surgical saw, which are applied to the surgical saw, the surgical saw comprises a trephine body and an endoscope, the trephine body is columnar, the middle part of the trephine body is hollow and serves as an observation cavity, the endoscope extends into the observation cavity, and one end of the trephine body is provided with a zigzag structure which is annularly arranged and serves as an operation end; the cavity wall of the observation cavity is provided with a radial through flushing hole, and the flushing hole is arranged close to the operation end. According to the scheme, the flushing hole is formed in the position, close to the operation end, of the trephine body and penetrates through the cavity wall of the observation cavity, that is, the flushing hole is connected with the observation cavity, flushing fluid, blood, sclerotin and the like can be discharged out of the flushing hole in time, and due to the fact that the flushing hole is close to the operation end, the flushing hole is adjacent to the working position of the endoscope; therefore, the flushing and liquid discharging efficiency of the visual field in front of the endoscope can be improved, images at the operation end can be clearly shot by the endoscope, the influence on the operation visual field of a doctor is reduced, and surgical operation of the doctor is facilitated.

The invention discloses a visible trephine structure, and relates to the technical field of medical instruments, the visible trephine structure comprises a tubular column, the tubular column is a hollow tube 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, the section of the handle part is arc-shaped, and the tubular column is arranged along the axis line of the handle part. Compared with the prior art, the visible trephine structure has the advantages that rotary cutting use is facilitated, and endoscopic observation is facilitated.

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.

A bone biopsy assembly, includes (a) a lost motion receiver, (b) a trephine needle, including an elongated shaft having a first end, a second end and a lumen extending from the first end to the second end, and (c) a stylet, received for sliding movement within the lumen and the lost motion receiver. A method of procuring a bone core sample from a bone, includes steps of (a) engaging a pointed tip of a stylet into the bone to seat a cutting edge of a trephine needle in the bone, (b) unlocking the stylet to allow free sliding movement of the stylet within a lumen of the trephine needle and (c) driving the trephine needle into the bone to procure the bone core sample within the lumen of the trephine needle.

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 utility model discloses a multifunctional anterior eye segment positioner which comprises a mother ring, a bottom ring groove is formed in the bottom of the mother ring, a sub-ring is installed at the lower end of the bottom ring groove, and the sub-ring is one of a corneal trephine positioning ring, a vitrectomy puncture positioning ring or a Yamane crystal suspension operation positioning ring. The corneal trephine positioning ring comprises a corneal trephine positioning ring body, and further comprises two lining rings arranged on the inner wall of the corneal trephine positioning ring body, the calibers of the two lining rings are 8 mm and 9 mm respectively, and the caliber of the corneal trephine positioning ring body is 10 mm; the first through grooves and the second through grooves are formed in the outer wall of the vitrectomy puncture positioning ring, the number of the first through grooves and the number of the second through grooves are both four, the distance between the first through grooves and a ring opening of the vitrectomy puncture positioning ring is 4 mm, and the distance between the second through grooves 12 and the ring opening of the vitrectomy puncture positioning ring is 3.5 mm. The three sub-ring structures are assembled and connected by the mother ring, so that three eye operations can be positioned, the error of the eye operations is reduced, and the accuracy of the eye operations is improved.

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.

The invention discloses a condylar test mold capable of measuring pressure, and relates to the technical field of medical instruments, the condylar test mold comprises a condylar test mold, a piezoresistive sensor, an intercondylar drill bushing and an intercondylar test mold, the condylar test mold and the piezoresistive sensor are assembled and combined, and when the condylar test mold with the piezoresistive sensor is started, the intercondylar drill bushing is inserted into the intercondylar test mold. The pressure value of the piezoresistive sensors at the same position can be displayed on the display in real time, when the condyle test mold is installed and in the process that an inner molded surface is attached to a bone, the reading of the piezoresistive sensors can be read, whether the condyle test mold is attached to the bone or not and whether the condyle test mold is installed obliquely or not can be checked, and the intercondylar drill bushing is arranged on the condyle test mold. The trephine and the square osteotome are driven into the intercondylar drill sleeve, the non-intercondylar position in the state is molded at the moment, the intercondylar test mold is arranged on the condylar test mold, the intercondylar test mold can be installed on the molded intercondylar, the reset result is finally confirmed, and the intercondylar drill sleeve has the effects of being accurate in installation and saving operation time.

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.

The present invention provides a micro-trephine handle for adsorption hemostasis, belonging to the technical field of medical auxiliary instruments, comprising a trephine handle and a micro-trephine needle; further comprising: an adsorption hemostasis unit, comprising: a limiting sleeve, one end of which is detachably connected to the top end of the trephine handle, and a channel for avoiding the micro-trephine needle is opened along the axis; an adsorption ring, which is hollow inside and sleeved on the outside of the micro-trephine needle, one end of which is connected to the other end of the limiting sleeve through multiple elastic reset members, and a plurality of through holes are opened on its surface; a drainage pipe, one end of which is connected to the adsorption ring and the other end passes through the limiting sleeve; a liquid storage pipe, which is detachably connected to the bottom end of the trephine handle, and the liquid storage pipe is connected to the drainage pipe through a drainage pipe. The present invention sets up an elastically resettable adsorption hemostasis unit at the micro-trephine needle, which can quickly absorb exuded blood during skin trephine surgery to avoid affecting the surgical field of 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 invention relates to the technical field of medical instruments, in particular to an amniotic membrane precutter which comprises a pressing part, a drill rod part is fixedly connected to the bottom of the pressing part, and a trephine tool bit is detachably connected to the bottom of the drill rod part; the tool face of the trephine tool bit is in the shape of a circle with a pedicle, and a cutting assembly used for pre-cutting the amniotic membrane is arranged on the drill rod part. The tool face of the trephine tool bit is made into a circle with a pedicle. When the pedicle of the tool face of the trephine tool bit is located below the circle, the connecting pedicle and the circle center line form an L shape. The front and back surfaces of the amnion can be completely correctly identified in a vitreous body operation, and the operation success rate is improved.

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.

The utility model relates to the technical field of surgical instruments, in particular to a visual trephine which comprises a trephine body and a tracker. The trephine body comprises a handle, a connecting rod and a trephine head which are connected in sequence, and the far end of the handle is fixedly connected with the near end of the connecting rod; the tracker comprises a reference frame, and a connecting sleeve is formed at the lower end of the reference frame; the far end of the connecting rod is detachably connected with the near end of the trephine head, and the connecting sleeve is detachably connected with the trephine body. According to the visual trephine, due to the fact that the trephine head is detachable relative to the connecting rod and the tracker is detachable relative to the trephine body, medical staff can flexibly choose to abandon the trephine head and retain the connecting rod of the trephine body and parts at the near end of the connecting rod after using the trephine. Or the trephine body is discarded, and only the tracker is reserved, so that the problem of waste of surgical instruments is solved, and the surgical cost is reduced.

The trephine protection sleeve comprises a sleeve body with two open ends, measuring scales are arranged on one side of the outer wall of the sleeve body in the length direction of the sleeve body, the outer wall of the sleeve body is connected with a sliding sleeve in a sliding and rotating mode, and a guide piece is arranged on one side of the front end of the outer wall of the sleeve body. The front end of the guide piece inclines downwards and is provided with an arc-shaped blocking piece forwards, a rotating grip is arranged at the rear end of the outer wall of the sleeve body, and the direction of the operating rod and the direction of the arc-shaped blocking piece are located on the same side and the same axis position. According to the trephine, the operation difficulty of bone grinding in the spine endoscope can be reduced, the bone removing efficiency is improved, the use safety of the trephine is improved, and the nerve injury risk is reduced.