71 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 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.

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 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.

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 provides a micro trephine handle for adsorption hemostasis, which belongs to the technical field of medical auxiliary instruments and comprises a trephine handle and a micro trephine needle. The adsorption hemostasis unit comprises a limiting sleeve, one end of the limiting sleeve is detachably connected with the top end of the trephine handle, and a channel for avoiding the micro trephine needle is formed in the limiting sleeve along the axis; the adsorption ring is hollow and sleeves the outer side of the micro trephine bit, one end of the adsorption ring is connected with the other end of the limiting sleeve through a plurality of elastic reset pieces, and a plurality of through holes are formed in the surface of the adsorption ring; one end of the drainage pipeline is communicated with the adsorption ring, and the other end of the drainage pipeline penetrates through the limiting sleeve; the liquid storage pipe is detachably connected to the bottom end of the trephine handle, and the liquid storage pipe is communicated with the liquid drainage pipeline through a drainage pipe. According to the skin trephine, the adsorption hemostasis unit capable of being elastically reset is erected at the position of the micro trephine needle, exuded blood can be rapidly adsorbed in the skin trephine operation, and the operation sight is prevented from being affected.

The present invention relates to the technical field of medical instruments, and in particular to a recipient corneal trepanation, comprising an upper base, a lower base, a splitting ring, an inner ring, a finger support, a positioner, a turntable, a drill, and an air pressure control system; the lower base is connected to the lower base, the lower base is provided with a splitting ring sleeved inside, and the splitting ring is provided with an inner ring sleeved inside; the upper base, the lower base, the splitting ring, and the inner ring are interconnected to form a trepanation cavity; two symmetrical finger supports are provided on the outer side of the upper base; when positioning the cornea, the positioner is provided inside the inner ring; when cutting the cornea, the turntable is provided inside the inner ring, the drill is provided at the lower end of the turntable, and the air control system is connected to the lower base through an air hole; the present invention does not block the doctor's sight when positioning and cutting the cornea, can ignore the doctor's skill level, unifies the thickness of corneal cutting, adopts an air pressure control system to realize exhaust and air intake of the corneal trepanation, does not require the doctor to assist in operating the syringe, and liberates labor.

This application relates to a set of intervertebral foramen rapid prototyping instruments for reaming and forming the intervertebral foramen on the ventral side of the superior articular process of the lower vertebra. The set includes: a tongue-shaped rod, whose head extends into the spinal canal through the intervertebral foramen and abuts eccentrically against the ventral side of the superior articular process; a fixing needle, which penetrates the middle hole of the tongue-shaped rod along the axial direction of the tongue-shaped rod and is screwed into the superior articular process by rotation; a protective sheath, which slides into the intervertebral foramen along the outside of the tongue-shaped rod and pushes aside the surrounding neurons; a trephine, which is sleeved outside the tongue-shaped rod and is located between the tongue-shaped rod and the protective sheath, and feeds along the axial direction of the tongue-shaped rod, rotates and cuts through the superior articular process, and separates a bone block that is threadedly fastened to the fixing needle in one step. The fixing needle takes away the bone block in the reverse direction to expand the intervertebral foramen, and the arthroscope probes into the spinal canal through the intervertebral foramen for observation. Thus, one-step forming of the intervertebral foramen reaming is achieved, and at the same time, damage to the surrounding neurons is avoided.

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.