9 results about "Broken nail" patented technology

The invention discloses a hand riveter, which is applied to plugging of a liquid injection hole of a battery monomer and can reduce damage of electrolyte to parts in the hand riveter and prolong the service life of the hand riveter. The hand riveter comprises a rivet pulling mechanism and an adsorption mechanism. Wherein the adsorption mechanism is used for discharging a broken rivet rod out of the hand riveter, and the adsorption mechanism is provided with a liquid storage cavity and a negative pressure pipe which are communicated with each other; the rivet pulling mechanism is used for pulling a rivet rod to be broken, the rivet pulling mechanism comprises a rivet arranging pipe, the rivet arranging pipe is inserted into the liquid storage cavity and can move relative to the liquid storage cavity in the axial direction of the rivet arranging pipe, and a preset distance is formed between the rivet arranging pipe and the negative pressure pipe; the inner diameter phi 1 of the negative pressure pipe, the inner diameter phi 2 of the liquid storage cavity, the outer diameter phi 3 of the nail arranging pipe and the preset distance L meet the condition that 0.8 < = phi < = 11.

The application discloses an intramedullary fixation device for femoral intertrochanteric fracture, which comprises a nail body, a cavity extending along a longitudinal axis from a proximal end to a distal end is arranged in the nail body, a force carrier system is arranged on the nail body to create a dynamic control at a human femoral neck and femoral head to eliminate stress shielding and realize controllable transverse dynamic force, the force carrier system comprises a movable assembly arranged at the proximal end of the nail body and at least one sliding piece arranged at the distal end of the nail body, the movable assembly serves as a main power source of the transverse dynamic force while playing a connecting and fixing role on the femoral neck and femoral head, and the sliding piece is used for the movable connection between the distal end of the nail body and the femoral body. The application can decompose the stress concentration and stress shielding of the locking nail on the intramedullary nail, enhances the bending strength, and realizes the stability of biomechanics. The proximal end of the intramedullary nail is coated with titanium, has a high friction coefficient, provides initial stability and long-term bone ingrowth effect, and can effectively reduce the occurrence of broken nail, bone nonunion and delayed bone healing.

The utility model relates to surgical instrument technical field especially relates to a kind of orthopedics broken nail taking-out device, specifically includes: annular sleeve and locking strip, annular sleeve lower end is provided with sawtooth, and the inner wall of annular sleeve is recessed strip-shaped recess;The main part of locking strip can be inserted into strip-shaped recess, and can move in strip-shaped recess, and locking portion is located in strip-shaped recess outside, in the cavity of annular sleeve. Through annular sleeve rotation, the sawtooth of annular sleeve lower end can cut into bone, then locking strip is inserted into strip-shaped recess, and the locking portion of locking strip is embedded in the thread of broken nail, annular sleeve is rotated, and broken nail is rotated by locking strip, to be taken out from bone. The orthopedics broken nail taking-out device disclosed in the utility model, annular sleeve only needs to destroy the small area bone around broken nail, to take out broken nail, solve the problem that the bone around broken nail is more serious in prior art due to the blunt and large occlusion of broken nail forceps, tiger forceps, wire ligature forceps, so that the broken nail around the bone is more serious.

The cortical bone screw comprises a fixing assembly, the upper end of the fixing assembly is fixedly connected with a lifting assembly, the front side of the lifting assembly is provided with a connecting assembly, the connecting assembly is provided with a rotating assembly, and the bottom end of the rotating assembly is fixedly connected with a clamping assembly. The rotating assembly comprises a rotating disc, the clamping assembly comprises a connecting disc fixedly connected to the bottom end of the rotating disc, and a sliding groove is formed in the connecting disc. According to the broken nail punching device, the device can be connected and fixed through the arranged fixing assembly, the height of the connecting assembly, the height of the rotating assembly and the height of the clamping assembly can be adjusted through the arranged lifting assembly, the two sides of the upper end of a broken nail can be punched, and the distance between inserting rods at the bottom end of a mounting plate can be adjusted through the arranged clamping assembly; the inserting rods are inserted into the drill holes in the two sides, the clamping assemblies can be driven to rotate by rotating the rotating assemblies, and therefore the broken nails can be taken out in a rotating mode.

The utility model discloses a kind of plastic particle low-temperature drying devices, it is related to plastic particle low-temperature drying technical field, including drying cabinet, the one end of drying cabinet is connected with feed tank, rotating roller is rotatably installed in feed tank interior, rotating roller is connected with the output end of rotating motor, fixedly set on the circumferential side of rotating roller has scraper, scraper is equidistantly provided with paddle, perforation is set in the bottom of feed tank, the bottom of feed tank is fixedly set with broken nail, broken nail and perforation are staggered, scraper is between two adjacent broken nails.This utility model is rotated by rotating roller in feed tank drive scraper and paddle, scraper is scraped to broken nail area in the process of rotation, particle will be blocked, fragmented by broken nail, force is scattered into smaller particle group or single particle by agglomerated particle, so that pre-crushing is completed before entering drying cabinet, so that particle has good dispersibility when entering drying link.

The utility model relates to the technical field of medical instruments, in particular to a micro-motion universal pedicle screw. A screw rod, a screw sleeve and a fixing pin are arranged through the micro-motion ball head nail; the head of the screw rod is cylindrical and is matched with the size of an inner hole of the screw sleeve; an inclined hole is formed in the cylindrical structure of the head of the screw rod and is matched with a fixing pin to connect the screw sleeve into a whole; the size of the polished rod structure in the middle of the screw rod is smaller than that of an inner hole of the screw sleeve; the tail portion of the screw rod is of a ball head structure, and the ball head structure of the tail portion of the screw rod is matched with a screw base spherical cavity of the screw base and a limiting block spherical cavity of the limiting mechanism to swing, so that reliable elastic fixing is achieved while the fixing strength of an implant is guaranteed, the influence of the rigidity of the implant can be reduced, and growth of callus is promoted; the healing rate of the affected part is accelerated, and meanwhile, the risks of screw breaking, screw seat cracking and the like in clinical application are effectively reduced.

The utility model belongs to the technical field of medical instruments, and particularly relates to a simple broken nail extractor which comprises a handle, the outer surface of the handle is fixedly connected with a plurality of equidistantly distributed anti-skid convex points, the middle of the lower side of the outer surface of the handle is fixedly connected with a fixing rod, and the lower portion of the fixing rod is fixedly connected with a clamping section. The upper portion of the outer surface of the clamping section is in threaded connection with a tightening cap, and the lower portion of the inner surface of the clamping section is in threaded connection with a drilling head. By arranging the independent drilling head, when the broken nail is taken out, the drilling head can be connected with the clamping section, then the drilling head is attached to the bone surface of the nail taking position, drilling operation can be conducted by rotating the device, the drilling head in the device is of a closed annular structure, no separation gap exists between the drilling head and the closed annular structure, and when drilling operation is conducted, the broken nail can be taken out conveniently. The probability of blockage with bones can be reduced, and the efficiency of nail taking operation can be improved.

The utility model is suitable for the technical field of dental instrument management, and provides a broken nail taking-out instrument box which comprises an openable box body, a bearing frame contained in the box body, a containing table installed on the bearing frame and capable of containing dental instruments, a first containing area and a second containing area. The bearing frame is provided with a first abutting piece and a second abutting piece. The device solves the problem that replacement is inconvenient due to the fact that the bearing frame and the box body are connected in a working mode, and the effects that the bearing frame can be conveniently taken out as a whole, and meanwhile the broken nail taking-out instrument cannot be polluted and damaged due to looseness in the using process are achieved.

The invention provides a tightening type clamping broken nail extractor for the orthopedics department, and relates to the technical field of medical instruments. The small-diameter broken nail taking-out device mainly comprises a rack, a sleeve, a screw rod, a plug rod, a connecting piece, a mandrel, a rotation stopping pin and a fastening nut, the sleeve is in threaded fit with the screw rod, rotation motion of the screw rod is converted into linear motion of the mandrel, meanwhile, a broken nail is clamped by a tightening claw, and the purpose of taking out a small-diameter broken nail is achieved. Through modular design, the operation process is simplified, the clamping stability is enhanced, meanwhile, the diameter of a working area is reduced by utilizing material elasticity and adopting a shrinkage clamping method, secondary damage to a wound of a patient is reduced, and the nail taking-out device is suitable for efficiently taking out small-diameter broken nails in the orthopedic surgery.