33 results about "Trephine" patented technology

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 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.

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 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 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.

The utility model relates to the technical field of biopsy sampling, and provides an intervertebral foramen puncture lumbar intervertebral space biopsy sampling device which comprises a puncture needle, the outer side wall of the puncture needle is sleeved with a puncture cannula, the outer side of the top of the puncture cannula is in threaded connection with a first handle, and the top of the first handle is provided with a connecting sleeve; a trephine pipe is further installed on the inner side of the connecting sleeve, a second handle is installed on the top of the trephine pipe, the trephine pipe penetrates into the puncture cannula to be used for biopsy sampling, and scales are arranged on the outer side wall of the puncture needle and used for observing the insertion depth; through the arrangement of scales on the outer side of the puncture needle, a doctor can conveniently manage the insertion depth and position, follow-up sampling is facilitated, and through the arrangement of the puncture needle, the guiding effect can be achieved, and follow-up puncture cannula insertion and trephine tube sampling are facilitated.

The invention relates to the technical field of bone section trephine in the lumbar foramen endoscope operation, in particular to a trephine for stopping bleeding of a bone section in the lumbar foramen endoscope operation. According to the technical scheme, the device comprises a trephine and a propeller fixedly arranged at the end of the trephine in a sleeving mode; a plurality of pits are formed in the side wall of the end, close to a saw blade, of the trephine, and the pits are filled with bone wax used for stopping bleeding during cutting. According to the trephine, the multiple pits are formed in the outer surface of the working section of the trephine, the bone wax is smeared in the multiple pits through the wax adding ring before an operation, the bone wax is smeared at the bleeding position in the incision process of the operation, and the problems that after a traditional trephine is used for cutting bone tissue, due to delayed hemostasis of the bone section, the visual field is disturbed, and hemostasis operation is difficult are solved; the effect of stopping bleeding immediately in the cutting process is achieved. The hemostasis efficiency in the lumbar foramen endoscope operation is improved, the hemostasis time is shortened, and the overall operation duration is shortened. And the difficulty of endoscopic hemostasis operation is reduced, remaining bleeding spots are reduced, and the operation safety and reliability are improved.

A kind of annular saw, including shell and circular saw blade being arranged at the end of shell, the driving mechanism being arranged in the shell and capable of driving circular saw blade rotation, the handle being arranged close to the circular saw blade of the shell, the handle includes the mounting portion in the middle and the first handle and the second handle at the two sides of mounting portion, the first handle and the second handle are located at the upper and lower sides of shell respectively, the mounting portion of the handle is fixed on shell and circular saw blade is located at the outside of shell and handle in its axial direction.The handle and the handle structure of the utility model annular saw are innovatively designed, can realize annular saw 180 ° rotation and hold as comfortable as before;It meets the ergonomic innovative design structure, right-handed and left-handed people can use normally, and meet the different working condition requirements that can be pasted to left side wall and also can be pasted to right side wall to groove front wall, adapt to left-handed, right-handed and wiring direction simultaneously, different working conditions are convenient to switch and use.

The auxiliary device comprises a tongue-shaped sleeve, a tongue-shaped opening is formed in the bottom end of the tongue-shaped sleeve, a locking buckle used for a spine endoscope is arranged at the top end of the tongue-shaped sleeve, riveting sleeves are arranged on the two sides of the tongue-shaped sleeve respectively, a riveting rod is arranged in each riveting sleeve, and the riveting rod is connected with the tongue-shaped opening. A channel formed by the locking buckle and the tongue-shaped sleeve is a channel of a foramen mirror and a trephine of the intervertebral foramen mirror operation, and a channel formed by the locking buckle and the riveting sleeve is an in-out channel of a riveting rod. The device is reasonable in structure and easy and convenient to operate, can play a guiding and angle positioning role on the sight glass and the trephine in the operation process, improves the operation safety, shortens the operation time and improves the operation success rate.

The zigzag corrugated circular saw blade comprises a trephine blade, an extension plate, a noise reduction structure and a mounting disc, and a plurality of tool bits are arranged on the periphery of the trephine blade in the circumferential direction; the extension plate is arranged on the inner wall of the trephine blade; the noise reduction structure comprises a first hole and second holes, the first hole is formed in the position, close to the tool bit, of the periphery of the trephine blade, a plurality of second holes are formed in the periphery of the trephine blade in the circumferential direction, the first hole communicates with the second holes, a noise reduction cavity is formed, and a noise reduction end is arranged in the noise reduction cavity. The mounting disc comprises a first disc body and a second disc body, and the first disc body and the second disc body are detachably connected to the two sides of the trephine blade. The saw blade has the advantages that the technical problems that in the prior art, a saw blade is inconvenient to replace, and noise is large in the using process due to the fact that a corresponding noise reduction mechanism is not arranged are solved.

Systems and methods are provided for extracting an implanted lead from a patient's body. The system may include a dilator and a trephine for extracting the electrode lead. A sheath may be included that is advanced over the proximal end of an electrode lead until the distal end of the sheath abuts a collar of the electrode lead coupled to proximal fixation elements. The dilator may be rotatably and axially advanced over the sheath until the distal end of the dilator collapses the proximal fixation elements within a lumen of the dilator. The trephine may then be rotatably and axially advanced over the dilator such that a cutting edge of the trephine cuts tissue surrounding distal fixation elements of the electrode lead to thereby dislodge the electrode lead.

The utility model provides a spine large channel endoscope trephine anchoring positioning nail which comprises a step-by-step sleeve and a center anchoring nail. The step-by-step sleeve can be detachably installed in the spine large-channel endoscope and attached to the inner wall of the spine large-channel endoscope. A central anchoring nail is slidably mounted in the step-by-step sleeve, the central anchoring nail is sequentially provided with a nail point part, a depth limiting part, a nail rod part and a nail tail part from head to tail, and the nail point part and the nail tail part protrude out of the two ends of the spine large channel endoscope. Before the vertebral plate bone is annularly cut, the accurate position of the bone cut by the trephine can be intuitively observed by using the positioning nail; when the trephine cuts the bone substance towards the deep surface and the positioning nail rotates together with the bone block to be cut, the cutting is completed, and the trephine stops rotating; after cutting is completed, the bone blocks can be lifted through the positioning nails, and the bone blocks are prevented from falling off from trephine holes; the vertebral plate girdling device is easy to operate and high in practicability, the workload is reduced, and meanwhile the accuracy of vertebral plate girdling work is improved.

The utility model relates to a trephine, including fuselage, annular saw blade, with the first head shell that is connected with the front end of fuselage and with the second head shell that is opposite cover and is combined and can be detachably connected, be provided with the driving wheel that contacts with annular saw blade one side cooperation in the first head shell, be provided with the driven wheel that contacts with annular saw blade other side cooperation and is opposite setting with driving wheel in the second head shell, be equipped with the drive mechanism for driving driving wheel in the fuselage, its characterized in that, still be equipped with the compression assembly for limiting annular saw blade in the first head shell, the compression assembly includes slide, compression spring and sets up the pivot on the both ends of slide, the utility model has adopted the design that the locking piece is set up on the pivot and is located the side of compression wheel towards the second head shell, this not only has shortened the replacement time of compression wheel greatly, has reduced the maintenance cost of compression assembly, has also prolonged the service life of compression assembly.

A trephine blade (10, 56) for preparing a corneal graft for endothelial keratoplasty includes an asymmetric cutting formation (20) for cutting an asymmetrically shaped notch around a peripheral edge of the graft to indicate proper orientation of the graft in endothelial keratoplasty. In some embodiments, the cutting formation (20) projects along a longitudinal direction of the blade from a cutting end of the blade and generally includes a first edge (22) for making inwardly directed cuts on the graft and another cutting edge (24) for making outwardly directed cuts on the graft to form the asymmetric notch in the graft. The first edge (22) and an inner end of the other cutting edge (24) generally intersect at a curved channel (26) of the cutting formation (20). In the described embodiments, at least one of the opposite ends of the first edge (22) and the other cutting edge (24) of the cutting formation (20) is continuous with a respective curved cutting edge (32, 34) that curves into the cutting formation.

The utility model discloses a depth-limiting percutaneous trephine device which comprises a sleeve, a trephine and a drill bit, a first through hole is formed in the sleeve, a second through hole is formed in the trephine, the trephine comprises a saw barrel and a limiting barrel which are connected with each other in the axial direction, sawteeth are arranged at the end, away from the limiting barrel, of the saw barrel, and the saw barrel of the trephine can be arranged in the first through hole of the sleeve in a sleeved mode. The outer diameter of the limiting cylinder is greater than the inner diameter of the first through hole of the sleeve; the drill bit comprises a guide pin part and an extension part which are connected with each other in the axial direction, the outer diameter of the guide pin part is smaller than that of the extension part, and the extension part can be sleeved with the second through hole of the trephine; a first depth limiting piece and a second depth limiting piece are movably arranged on the trephine and the drill bit respectively, when the trephine is sleeved with the sleeve, and the drill bit is sleeved with the trephine, the first depth limiting piece is located between the sleeve and a limiting barrel of the trephine, and the second depth limiting piece is located on the upper side of the trephine. According to the trephine, the sleeve, the trephine and the drill bit are used in cooperation, double precise depth limiting can be achieved, and the safety and the efficiency of the trephine are greatly improved.

The application belongs to the technical field of surgical instruments, and particularly relates to a cervical vertebra anterior approach surgery bone taking and distraction nail and a distractor. In the cervical vertebra anterior approach surgery bone taking and distraction nail, the bone taking cylinder of the bone taking assembly is inserted into the outer sleeve. When the outer sleeve is anchored, the main surgeon can operate the bone taking handle to implant the outer sleeve on the vertebra to be distracted, complete the anchoring of the outer sleeve, and in the process of implanting the outer sleeve, the vertebra bone specimen cut by the trephine of the fixed end of the outer sleeve is left in the bone taking cylinder due to the opening of the opening end of the bone taking cylinder and the internal thread, and when the bone taking assembly is taken down, the vertebra bone specimen will be taken out of the outer sleeve together with the bone taking cylinder, the taking of the vertebra bone specimen is completed, and the outer sleeve continues to be anchored on the vertebra to serve as the distraction nail. The whole bone taking process does not need to occupy additional operation time and space, the taking of the vertebra bone specimen is realized at the same time as the anchoring of the distraction nail is completed, and the cervical vertebra surgery itself is not affected by the bone taking.

The utility model relates to the technical field of spine medical instruments, in particular to an electric trephine driven by a hollow motor, which comprises the hollow motor, a handle is fixed at the top of the hollow motor through bolts, a bottom shell is arranged at the bottom of the hollow motor, and a silicon steel winding is slidably connected in the hollow motor. A plurality of windings are wound in the silicon steel winding, a hollow shaft is arranged in the silicon steel winding, a connecting pipe is slidably connected in the hollow shaft, a positioning pipe is fixed in the connecting pipe, a positioning hole is formed in the positioning pipe, a trephine is fixed to the inner wall of the positioning hole, and a pressing rod is detachably connected in the trephine. A surgical hammer is further arranged at the top of the handle; according to the operation drill, the hollow motor and the trephine are combined, so that the weight of equipment can be reduced, the fatigue of a doctor during operation is reduced, and the safety and the success rate of an operation are improved.

1. The name of the design product: corneal visible trepan (with handle). 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.