77 results about "Trephine" patented technology

Disclosed is a trephine drill for an implant. The trephine drill for the implant includes: a perforating body which comprises a first end part provided with a cutter for perforating the alveolar bone and a second end part formed with a through hole; and a rod body which couples with the perforating body to move close to and apart from the first end part of the perforating body toward the through hole of the perforating body and adjusts a perforation depth when perforating the alveolar bone. With this, not only an alveolar bone is precisely perforated at a preset depth, but also an alveolar bone piece, generated when perforating the alveolar bone, is easily removed from inside of a perforating body.

An implant placement trephine may be used to drill into bone and also to bore a core of bone for purposes of forming an implant channel for implant placement. The trephine generally includes a trephine body with a cutting blade at one end and a spindle extending through the trephine body with a pilot drill at one end extending beyond the cutting blade. The spindle may be adjustably attached to the trephine body to allow the pilot drill to be adjusted relative to the trephine cutting blade. The trephine may be prepackaged with an implant, such as a dental implant, having a corresponding size. The implant placement trephine may be used for different osteotomy applications, for example, to form a channel for dental implants or orthopedic retaining stabilizers. The trephine may also facilitate harvesting bone from the core of bone removed for an autograft at the implant site.

A guided pin system (GPS) trephine drill may be used for the placement of a dental implant while simultaneously collecting a substantial volume of autogenous bone that otherwise would have been discarded off during the current method of sequentially enlarging diameter spade drills. A method for preparing a dental implant site may include drilling the site with a pilot drill to a depth about 1 mm deeper than the intended length, in the axial direction, of the implant. The GPS trephine drill may be advanced along a straight axial path created by the pilot drill to a final depth determined by the bottoming out of a protruding pin on the trephine drill.

The invention relates to a distal automatic cutting bone core extraction device which belongs to the technical field of orthopedic surgical equipment, and is used for complete extraction of a bone core with the length being multiple times of diameter length of the bone core, and the technical scheme is as follows: the device comprises a positioning needle, a soft tissue separator, a positioning sleeve, a path-opening trephine, a cutting trephine and a drillstock, wherein the path-opening trephine and the cutting trephine are cylinders, cutting teeth are circumferentially arranged on the upper edge of the end surface of the wall of the distal cylinder, two pin holes are arranged on the wall of the proximal cylinder, the path-opening trephine cylinder and the cutting trephine cylinder have the same inner diameter and the same outer diameter, cutting-off teeth which are arranged obliquely are fixedly arranged on the inner wall at the lower end of the cutting trephine, and scales along the direction of a long shaft are arranged on the surface of the outer wall of each cylinder. By utilizing the device, the difficult problem that the bone core with the length being a plurality of times or even more than ten times larger than the diameter can not be extracted completely at the distal end in an orthopedic surgery is solved, thereby having the ground-breaking significance; and the device is mainly used for extracting the bone core with complete shape from a thick bone block through a blind hole, and especially applicable to extracting the bone cones with femur proximal or distal expansion parts and tibia proximal expansion parts.

A ring saw broken nail remover, which is composed of a connecting seat, a handle, a clamping handle, a ring saw, a tapered notch, a connecting shaft, a T-shaped through groove, a clamping jaw, a T-shaped thread, etc., the upper part of the connecting seat is connected with the The clamping handle is connected, the left and right sides are connected with the handle, and the lower part is connected with the ring saw. The connecting shaft passes through the connecting seat from the middle and is connected with the jaws. The tapered groove There is a T-shaped thread groove on the mouth, which is used to cooperate with the T-shaped thread on the jaw. Since the thread is arranged in a tapered shape, it can also move radially when the jaw moves up and down, so that The clamping and loosening actions of the jaws are completed. The invention only needs to carry out very shallow drilling to take out the broken nail, and the operation does not need to repeatedly adjust the direction and position, and the operation is simple.

A device for holding and aligning a trephine blade includes an elongated cylindrical component, a first alignment structure and a second alignment structure. The elongated cylindrical component extends along a first axis and comprises a hollow cylinder having an open proximal end, an open distal end, an inner cylindrical surface and an outer cylindrical surface. The first alignment structure is integral and co-planar with the proximal end and comprises a first circle attached to the inner cylindrical surface with one or more radially extending rods. The second alignment structure is arranged parallel to the first alignment structure within the hollow cylinder above the distal end and comprises a second circle attached to the inner cylindrical surface with one or more radially extending rods. The first and second circles are coaxial with the first axis and the first circle comprises a diameter that is greater than a diameter of the second circle.

The invention relates to a lumbar vertebra posterior-lateral minimally invasive decompression and fusion system. The lumbar vertebra posterior-lateral minimally invasive decompression and fusion system comprises a guider, a protective sleeve, a trephine, a holder and a fusion cage; the guider is provided with a guider handle, a guider connecting rod detachably connected with the guider handle, a guide block arranged on the guider connecting rod and an opening head connected to the lower end of the guider connecting rod; a baffle and an anchoring nail arranged on the protective sleeve; a trephine handle and a work sleeve with the jagged lower edge are arranged on the trephine; the guide block is sleeved with a work sleeve, and the work sleeve is sleeved with the protective sleeve; a holder handle and holder connecting rod connected with the holder handle and provided with a drainage channel in side are arranged on the holder; a fusion cage body is arranged on the fusion cage, a fastening channel and a nail path for assembling and fixing nails are formed in the fusion cage body, and the holder connecting rod and the fusion cage are connected in a fastened mode. The device is used for lumbar vertebra decompression and is better in fusion effect, easier to operate, minimally invasive and small in damage.

The invention relates to a 3D printing operation guide plate for sport injury treatment, which is manufactured by utilizing a 3D printing technique. The 3D printing operation guide plate comprises assemblies A (1) and B (7), wherein the assembly A (1) is divided into an upper part and a lower part, the upper part is a guide pipe (3), the lower part of the assembly A (1) is a shell (4) clung to the surface of a talus (5), the shell (4) extends from the side face of the talus (5) to the bottom surface of the talus (5) and the neck of the talus (5), the assembly A (1) is provided with a marking hole (6) between the guide pipe (3) and the shell (4), the assembly B (7) is a guide pipe adapting to a bone hole manufactured after cleaning lesion with a trephine (2), the length of the assembly B (7) is equal to the depth of a bone hole to be drilled by the trephine (2), guide holes (9) are formed around the assembly B (7), a wedge-shaped locating gap (8) is formed in the upper edge of the assembly B (7), and the position of the wedge-shaped locating gap (8) is coincident with the position of the marking hole (6) of the assembly A (1). The 3D printing operation guide plate provided by the invention achieves individual treatment, remarkably improves the accuracy of location, relieves the pain of patients, and is suitable for popularization and use in the sport injury treatment.

The invention relates to a microscopic root canal trephine capable of controlling the cutting depth. The microscopic root canal trephine comprises a trephine body, wherein a cutting edge is formed on one end part of the trephine body; the trephine body is provided with a measuring region for measuring the depth of a stretched root canal; the measuring region is sleeved with a scale ring which can move along the axial direction of the trephine body; the lower end face of the scale ring can be contacted with a tooth occlusal face or a marginal ridge. The microscopic root canal trephine capable of controlling the cutting depth, provided by the invention, is compact in structure, reliable in work and convenient to operate, can improve the treating quality, has slight damages to tooth roots, avoids accidental injuries to a patient and is applicable to controlling the cutting depth of various types of the root canal trephines.

The invention discloses a hollow trephine with a push rod, comprising a hollow trephine body and a push rod; the hollow trephine body includes a trephine bit, a connecting rod and a cross bar, the trephine bit is cylindrical, and one end of the trephine bit passes through the connecting rod It is fixedly connected with the cross bar, the cross bar is perpendicular to the ring bit and the connecting rod, the other end of the ring drill has a round hole, the axis of the round hole coincides with the axis position of the ring drill, and the outer wall of the ring drill has a hole in the direction of the ring drill axis. There is a strip hole, and the end of the round hole on the ring bit is provided with serrations; the push rod is cylindrical, and the push rod is slidably set in the round hole; the end of the push rod near the cross bar is provided with a push block, and the bar groove An end close to the cross bar is provided with a card slot on the long side wall, and the push block can be locked in the card slot. Through the above method, the present invention can conveniently remove the bone column stuck in the hollow trephine to shorten the operation time and reduce the risk of anesthesia. It can also be stuck on the upper part of the hollow trephine when not in use, without affecting the normal operation of the hollow trephine. use.

The present invention discloses gear driven inclined vertical trephine and its usage. The gear driven inclined vertical trephine includes back plate, pedestal, rotating base, bit case, gear, case cover, motor and washer. During drilling hole, the pedestal matching the shaft hole of the outer water distributing ring is installed inside the shaft hole of the outer water distributing ring, the outer water distributing ring is screwed to the pedestal and the base plate, the rotating base is rotated for indexing, and the bit case is shifted to regulate the diameter position of the hole. The present invention has smooth driving and reliable running, and can facilitate the machine of screw hole and positioning hole in the shaft hole end of the outer water distributing ring.

Method for extracting an implant installed in a bone, which comprises the application of a torque on an extraction tool in order to thread it in the interior of the implant until the implant-bone connection is broken, with the specific feature that the torque is applied in phases. In each phase a torque that is increasingly greater than in the previous phase is applied and the application of torque is then eased. This method brings about a gradual and controlled deformation of the head of the implant, with the result that the extraction tool is inserted more deeply into the implant. As a result, higher breakage torques may be applied without damage being caused to the extraction tool.

The invention discloses a suction cutting type percutaneous vertebral-plate-drilling precise depth-limiting trephine set for minimally invasive spine surgery, belonging to the field of medical instruments. The trephine set comprises a depth-limiting trephine, a depth-limiting soft-tissue strutting sleeve arranged at the bottom end of the depth-limiting trephine in a sleeving mode and detachably connected with the depth-limiting trephine, a depth-limiting grinding disc arranged in the depth-limiting trephine and detachably connected with the depth-limiting trephine, limiting buckles respectively arranged at the top end of the depth-limiting trephine and the top end of the depth-limiting grinding disc in a sleeving mode, and a saw ring arranged on the bottom side of the depth-limiting trephine. With the trephine set in the invention, a channel is opened up for further intraspinal operation of the spine; the trephine set is accurate, safe and efficient, changes the operation mode that a vertebral plate needs to be bitten and cut by a rongeur or needs to be ground off with a spherical high-speed grinding drill bit under X-ray fluoroscopy detection in traditional operation, avoids excessive excision injury to the vertebral plate and condiserable radiation exposure of doctors and patients, reduces interference with and injury to nearby peripheral soft tissues and nerve structures inspinal canalis vertebralis, and is convenient to operate, reduced in operation time, scientific in design, high in efficiency and good in safety.

The invention discloses a novel surgery minimally invasive surgery instrument, and belongs to the field of surgery minimally invasive surgery instruments. A micro view trephine is capable of overcoming the defects that when an existing trephine is in operation, an endoscope, a water inlet pipe and a water outlet pipe are incapable of timely following up, position relationships among the endoscope, the water outlet pipe, the water inlet pipe and the trephine need to be mutually coordinated, and a visual field of the endoscope is blocked by the trephine. Therefore, safety, convenience and accuracy of surgical operations are improved, and a usable range of the trephine is expanded. The micro view trephine is sleeved on the front portion of a gun-shaped inner core, when a user holds a gun-shaped inner core handle by a hand, and rotates a gear on the tail portion of the micro view trephine by hand to drive saw teeth of the micro view trephine to rotate, the purpose of sawing to obtain a bone piece is achieved. Due to the fact that the endoscope, the water inlet pipe and the water outlet pipe are arranged in the center of the micro view trephine, the endoscope, the water inlet pipe and the water outlet pipe can timely follow up along with movements of the micro view trephine, and an operating area can be observed and washed. Meanwhile, a plurality of empty grooves are formed in the position, close to the saw teeth, of the front portion of the micro view trephine, observation on an operating area outside the micro view trephine through the endoscope and bone piece cleaning are convenient.

The present invention discloses belt pulley driven inclined vertical trephine and its usage. The belt pulley driven inclined vertical trephine includes back plate, pedestal, rotating base, bit case, belt pulley, motor and washer. During drilling hole, the pedestal matching the shaft hole of the outer water distributing ring is installed inside the shaft hole of the outer water distributing ring, the outer water distributing ring is screwed to the pedestal and the base plate, the rotating base is rotated for indexing, and the bit case is shifted to regulate the diameter position of the hole, so as to machine screw hole and positioning hole in the shaft hole end of the outer water distributing ring. The present invention has compact structure and simple process, and can facilitate the machine of screw hole and positioning hole in the shaft hole end of the outer water distributing ring.

The invention provides a medical bone internal broken nail removal and pulling trephine bit. According to the trephine bit used for pulling and removing a bone internal broken nail, a barrel body is connected with the front end of a trephine holding rod, the front end of the barrel body is provided with annular saw teeth, several pressure reducing holes are formed in the barrel body, and a scale marking line for obtaining lengths is also arranged on the barrel body. When in use, the trephine bit can be aimed at the position of the bone internal broken nail, and can be drilled into a bone through rotation of the annular saw teeth, and a nail head broken into a tube can be taken out, thereby avoiding injuries to other tissues and reducing patient suffering.

The invention discloses a percutaneous vertebral plate cutting and drilling precise depth-limiting threaded type trephine set for minimally invasive spine surgery, and belongs to the field of medicalinstruments. The percutaneous vertebral plate cutting and drilling precise depth-limiting threaded type trephine set for the minimally invasive spine surgery comprises a depth-limiting trephine, a limiting soft tissue opening sleeve, a limiting buckle and a saw ring, wherein the limiting soft tissue opening sleeve is arranged at the bottom end of the depth-limiting trephine in a sleeving manner and is detachably connected with the depth-limiting trephine, the limiting buckle is arranged at the top end of the depth-limiting trephine in a sleeving manner and is in threaded connection with the depth-limiting trephine, the saw ring is arranged on the bottom side of the depth-limiting trephine, and a ring cutting bone block locking thread is arranged at the end, close to the saw ring, of the inner side of the depth-limiting trephine. According to the trephine set, minimally invasive targeting of a vertebral plate of a spine is achieved, a bone channel is established through precise ring cutting and drilling, damage is reduced, and the efficiency is improved; and moreover, a surgical mode of cutting the vertebral plate through open bone rongeur forceps in the past is changed, iatrogenicdamage to the vertebral plate is reduced, the trephine set is convenient to operate, the time is saved, the trephine set is scientific and high in safety, and interference and damage to adjacent peripheral soft tissues and neural structures in spinal canals of the spine are reduced.

The invention discloses a rapidly dismountable handle. The handle comprises a mounting base, a trephine sleeve, stop levers, a rotary switch and a positioning rod, wherein the trephine sleeve is fixedto the mounting base and is coaxial with the mounting base, at least two stop levers are arranged on the peripheral wall of the mounting base, a mounting hole is formed in the trephine sleeve in theaxial direction, a working hole coaxial with the mounting hole is formed in the mounting base, a positioning rod mounting through hole is formed in the trephine sleeve in the radial direction, the positioning rod is connected with the positioning rod mounting through hole in an inserted mode, the trephine sleeve is sleeved with the rotary switch, a positioning rod guide groove and a positioning rod mounting groove are formed in the rotary switch, and the upper end of the positioning rod is in sliding fit with the positioning rod guide groove; when the positioning rod is located at one end, connected with the positioning rod mounting groove, in the positioning rod guide groove, the lower end of the positioning rod extends into the mounting hole; and when the positioning rod is located at the other end of the positioning rod guide groove, the lower end of the positioning rod moves into the positioning rod mounting through hole. By using the rapidly dismountable handle, the trephine can be rapidly mounted and dismounted, and the operation efficiency is effectively improved.

The belt pulley driven inclined trephine includes a bottom plate, a pedestal, a swivel base, a bit box, a belt wheel, a motor and a gasket. The motor is installed inside the bit box, and the belt pulley is set bit on the box and in a suspension state. The present invention has compact structure, simple technological process, facilitated machining and short machining period.