Distractor "serupa" to the external apparatus

 

(57) Abstract:

The invention relates to the field of medical equipment, namely to external devices used in orthopedics and traumatology, in particular an element of the device, intended for lengthening of the long bones. Distractor "Sebua contains a pair of threaded nut which is made with a cylindrical part that is installed in the sleeve fixed to the body. The inner surface of the sleeve has evenly spaced grooves and provided with a tangentially located opening in which is mounted for movement by a spring-loaded finger. In addition, the hollow body may be made in the form of a fork or elongated. The technical result of the invention is to provide implementation dosed microdistricts in the lengthening of the limbs and compression between the bone fragments at any length of the segment of the limb. 2 C.p. f-crystals, 3 ill.

The invention relates to the field of medical equipment, namely to external devices used in orthopedics and traumatology, in particular an element of the device, intended for lengthening of the long bones.

installed the nut and tube, which nut is spring-loaded rod, and the emphasis of the threaded rod has an end recess (RU, and. C. 1629046, MKI A 61 B 17/60. Telescopic actuator to the apparatus crescono fixation. Ilizarov, A. Publ. 23.02.91, bull. 7).

However, structural features of the known telescopic actuator to the apparatus transosseous fixation does not allow to use it under close location supports external device to each other, do not allow compression between the bone fragments, make it difficult to adjust the length of the telescopic drive for installation of the device.

The present invention is to develop a distractor, allowing dosed microdistricts in the lengthening of the limbs and compression between the bone fragments at any length of the segment of the limb with the ability to quickly adjust the length of the distractor when the installation of the device.

The problem is solved in that the distractor "Serupa" to the external apparatus, containing a pair of threaded, mounted on the hollow body, and the fixation nut screw pair is made with a cylindrical part that is installed in the sleeve, the inner surface of which is uniformly is the ability to move the spring-loaded finger and the sleeve is fixed to the body.

It is advisable to use a distractor at a close location of supports external device to each other, the hollow body to provide a Foundation made in the form of a fork, and a fixation element must be in the form of nuts mounted on the threaded rod pair with a hand fork.

In addition, for rapid adjustment of the length of the distractor when linking devices in the process of its imposition on the extremity end of the hollow elongated casing shall be fitted with a threaded hole, which features a bolt-latch, and the fixation element is made in the form of a rod mounted in the hollow body, with the threaded end of the rod has a nut and locknut.

Fig. 1 depicts distractor "Serupa" with a housing having a plug.

Fig. 2 depicts distractor "Serupa" with elongated body.

Fig. 3 depicts a cross-section of the nut and sleeve.

Distractor "Sebua contains a pair of threaded, in which the threaded rod 1 (Fig. 1) is mounted in the nut 2 distractor. Nut 2 of its cylindrical part mounted in the sleeve 3, fixed by means of screws 4 on the hollow body 5. On the inner surface of the sleeve 3 is made rawname can move the spring finger 7. The latter has the possibility of contact with the grooves 6 arranged on the inner surface of the sleeve 3.

In addition, the use of a distractor in the shortest length of the tubular bones of the limb segment is carried out through the base of the hollow body 5 made in the form of a fork 8, and the fixation element 9 made in the form of nuts installed from the side of the plug 8 on the threaded rod 1. The other end of the latter is equipped with a fixation elements in the form of nuts 10, 11.

At a sufficient distance between the supports of the apparatus of distractor has the form 12, mounted on the hollow housing 3 (Fig. 2) made elongated. The elongated end of the hollow body 13 is provided with bolt-retainer 14 and the fixation element made in the form of a rod 15, the threaded end of which has a nut 16 and a nut 17.

Distractor "Serupa" to the external apparatus (hereinafter distractor) works as follows.

If you lengthen the limb segment is small and supports external device are close to each other, the stock threaded rod required for lengthening limbs, does not fit between the supports of the apparatus. In this case, use distractor, in which the threaded rod about which inania limbs passed through the hole of a support apparatus (not shown). The tubular housing 5 distractor its plug 8 comprises an annular support, preventing it from spinning. Using a nut 9 screwed on the protruding end of the threaded rod 1 from the opposite end of the support, rigidly fix distractor. The opposite end of the threaded rod 1 by means of nuts 10 and 11 rigidly connected to the other support apparatus (not shown). To implement the distraction Unscrew the ring nut 9 and turn the nut 2 distractor until it clicks implemented spring finger 7, falling into the groove 6 of the sleeve 3, after which the nut 9 is tightened. Thus carry out periodic distraction at all distracters. The number of grooves 6 on the sleeve 3 defines the fragmentation of distraction. If you need to remove the force of distraction, movement of the support in the opposite direction performed by means of nuts 10, 11 located at the opposite end of the threaded rod. In cases where this is not possible, for example, the opposite end of the threaded rod is connected to the hinge pillar site, viventis screw 4, rotate the nut distractor in the opposite direction, while the spring finger 7 has a sleeve 3.

If the distance between the supports of the apparatus is to accommodate to sapati distractor, which mount to the support of its elongated hollow body 13 is carried out using the sliding rod 15 with a threaded end. When the threaded rod 1 is screwed into the nut 12 distractor, passing it into the hollow body 5, the length of the required extension of the leg. The opposite end is fixed with nuts 10, 11 in the support hole (not shown). Retractable rod 15 with a threaded end is introduced into the hole of the other support (not shown) and fixed with nuts 16, 17. Then end with the bolt-latch 14 is fixed in the tubular body 13 of the distractor. Periodic rotation of the nut 12 threaded pores distractor until it clicks exercise dosed distraction. To implement the compression you want to move the support in the opposite direction with nuts 10, 11 and the nuts 16, 17.

Thus distractor "Sebua allows regardless of the length of the elongated segment of a limb, or rather the distance between the supports external device to perform micromovings bone fragments in the lengthening of the limbs along with the ability to perform compression osteosynthesis. Allows to reduce the time of Assembly and disassembly of the apparatus.

1. Distractor to external devices is and screw pair is made with a cylindrical part, installed in the sleeve, the inner surface of which is maintained evenly spaced grooves, and provided with a tangentially located hole, while the latter is mounted for movement by a spring-loaded finger, and the sleeve is fixed to the body.

2. Distractor under item 1, characterized in that the hollow body provided with a base, made in the form of a fork, and a fixation element made in the form of nuts mounted on the threaded rod pair with a hand fork.

3. Distractor under item 1, characterized in that the end of the hollow elongated body provided with a threaded hole, which features a bolt-latch, and the fixation element is made in the form of a rod mounted in the hollow body, with the threaded end of the rod provided with a nut and lock nut.

 

Same patents:

The invention relates to medicine, namely to traumatology and orthopedics, and is intended for the treatment of patients with severe injuries of the pelvic ring, especially its posterior - Pereloma-sacrum sprains, breaks the sacroiliac joints, fractures of Malena

The invention relates to medicine, namely to traumatology and orthopedics and can be used, for example in the treatment of fractures and segmental defects of long bones, including complicated by purulent infection

The invention relates to surgery, in particular to instruments for the treatment of musculoskeletal, and can be used for the treatment of patients with fractures of large segments of the lower limb of different localization and precise anatomical mapping of the bone fragments of the femoral and tibial bones

The invention relates to traumatology and orthopedics and can be used for treatment of fractures and deformity correction of the limbs

The invention relates to medicine, namely to devices for the treatment of bone fractures

The invention relates to medicine, namely, oral and maxillofacial surgery and may find use in osteosynthesis of the lower jaw about the various pathological processes

FIELD: medical engineering.

SUBSTANCE: device has reposition sliding bars having members for fixing bones and connecting unit. The connecting unit has at least one member for fixing bones, lead screws and rods. The connecting unit is combined from base and clamp member connected with hold-down screw allowing rotation. Radial corrugated elements are available on base and clamp sides facing each other. Holes are available in base and clamp casings for receiving the attached rods and rotatably anchored hold-down screws. Through holes are produced in reposition sliding bars having smooth internal surface for the rods and internal screw thread for holding lead screws.

EFFECT: enhanced effectiveness of treatment; accelerated treatment course.

9 cl, 25 dwg

FIELD: medicine; medical engineering.

SUBSTANCE: method involves introducing a pair of fastening members into each vertebra. Controllable elastic force is applied to the pairs of fastening members as unit- or bilateral load in particular cases. It enables one to support forces in continuous way in loading and relaxing vertebral muscles. Device has movable supporting beams connected to each other in specific way with threaded rods each manufactured from plates attached to each other. Two plates are outer and one of them is intermediate. Each plate has two members for fixing vertebra manufactured as screw rods. The plates are connected on one side with elastic member having spring and clamp mounted on threaded rod, one rod end being freely arranged on the plate and the other one being fixed in the plate with single-axle hinge; on the other side with elastic member having spring having hooks and threaded rod, one rod end being fixed in the plate with nuts and the other one is connected to opening in the plate.

EFFECT: enhanced effectiveness of treatment; reduced risk of traumatic complications.

5 cl, 10 dwg

FIELD: medical engineering.

SUBSTANCE: device has proximal and distal ring-shaped support members connected to each other by means of threaded rods fixed in proximal ring-shaped support member. A pair of T-shaped threaded uprights is mounted on the distal ring-shaped support member in diametrically opposite points along one axis allowing axial displacements and fixation to take place. Cut bushings are movably and fixably mounted on smooth uprights cross-members. The bushings are connected to the rods and a pair of U-shaped uprights having threaded cross-bars are diametrically movably mounted along parallel axes and fixable on pedicles and bushings mounted on the uprights and fixable with nuts. The bushings are pivotally connected to the rods. Axes of all hinges are arranged on distal rod ends in parallel to each other in the same plane.

EFFECT: avoided bone deformities.

9 dwg

FIELD: medical engineering.

SUBSTANCE: device has rod having at least two fastening members for the fixing rods, the members being movably mounted on the rod and fixable in posterior positions; and removable compression-distraction device having casing and fastening member fixable on the rod and with pusher screw having hexagonal head at one end handled with wrench and thrust member pivotally connected to the screw at the other end and engageable to fixing rod tail in indirect way via a bar having longitudinal T-shaped slot on one side and guiding slot on the opposite side for receiving the fixing rod. The bar is arranged in parallel to the fixing rod and is movable along allowing distributing pressure over maximum available length of Schanz screw and avoid its deformation during distraction.

EFFECT: enhanced effectiveness of distraction and reduction of bone fragments.

6 dwg

FIELD: medical engineering.

SUBSTANCE: device has hollow rod having two telescopic parts enclosed one into the other by means of feed screw having members for fixing threaded rods screws on each of them engageable with pelvic bones. One of the members is spring-loaded in axial direction. The device has at least one additional rod mounted on in parallel to and at some distance from the main rod, the additional rod being extensible by means of power mechanism having two half-rods one of which is connected to the main rod by means of two holders coaxially arranged in perpendicular to longitudinal axes of both rods allowing rotation relative to each other and fastened to each other to prevent from axial displacement with locking member. Threaded rods engageable with femur are fixed on the second half-rod. Each holder has transverse opening for setting into it the main and additional rod fixed in holders with clamps, respectively.

EFFECT: enhanced effectiveness of combined treatment.

5 cl, 3 dwg

FIELD: medicine; orthopedics.

SUBSTANCE: apparatus has pin holders, needle lockers, needles and nut connected together by thread ties of rectangular frames. Apparatus is additionally equipped with thread rods and ties. Any pin holder is made in form of a cube which has through, parallel channels for thread pins or thread ties. Channels are symmetrically remote from opposite faces of cube. Frames are integrated into units. Units are connected by thread ties at central parts of frames. Ties are fixed in channels of pin holders mounted onto pin of frames for dosed movement of units.

EFFECT: widened reposition properties; improved reliability of locking; adjusted rigidity of carcass.

2 cl, 6 dwg

FIELD: medical engineering.

SUBSTANCE: device has two coaxial threaded pins provided with control nuts. The pins are connected to each other via elastic parallelogram having bases rigidly connected to the pins. Elastic bearing beams are arranged across the pin axes. The beams are bound to each other by a pair of elastic sensitive beams arranged in parallel and symmetrically relative to pin axes. The sensitive beams have strain gages joined into bridge circuit connectable to tensometer.

EFFECT: high accuracy and reliability of loading data; high accuracy of bone fragment reposition and recovery.

2 dwg

FIELD: medical equipment, in particular, instruments used in traumatology.

SUBSTANCE: apparatus has para-articulation rings equipped with wires and connected through telescopic bars. Apparatus consists of standard set parts of Ilizarov' apparatus and is equipped with para-fracture outer support with wires for additional designing of apparatus, said support including semi-ring connected with plates and threaded bar by means of bolts, nuts and brackets so as to define closed circle. Outer support is secured by means of threaded bars and nuts to plates preliminarily set on telescopic bars. Perimeter of para-fracture outer support is adjusted in accordance with perimeter of cross section of shin, at the level of positioning the support.

EFFECT: increased efficiency and reduced time of treating patient with shin fracture.

6 dwg 1 ex

FIELD: medicine, in particular, surgical dentistry, maxillofacial surgery.

SUBSTANCE: apparatus has curved base formed as threaded bar with two diametrically opposite flats, wire holders mounted on base and made in the form of plates equipped with wires, and retaining units comprising couplings with screw arranged in projection of flat and adapted for displacement and fixing on base. Wire holder consists of two plates, one of said plates being made integral with retaining unit and having two 6-mm long grooves for receiving of wires, and other plate being made detachable and equipped with wire fixing screw positioned perpendicular to retaining unit. Threaded wires have at their sharpened end 15-mm long thrust thread for cortical bone.

EFFECT: reliable retaining of fractured bone fragments, provision for correcting position of fragments in oral-vestibular direction, simplified construction allowing apparatus assembling time to be reduced and time of keeping patient under anesthesia to be decreased.

7 dwg

FIELD: surgical instruments used in orthopedics and traumatology, in particular, for open setting of displaced cervical vertebrae of spine.

SUBSTANCE: apparatus has spring-loaded branches connected with one another through pivotal lock with shaft and mating opening. Arms and working jaws are provided on branches. One of working jaws is equipped with adjustment retainer provided on first outer supporting surface and other working jaw has pusher adapted for cooperation with displaced vertebral body and disposed on second outer supporting surface. Opening mating with said shaft is made in the form of guiding slot oriented at an angle to plane where working jaws adjoin one another. Length and angle of inclination of guiding slot correspond to maximal height of lift of vertebral body of joint having maximal size. Pusher for cooperation with displaced vertebral body is made in the form of step. Branches are loaded by means of spring formed as branch shifting means which are provided with angular bend for preliminary passage of branches before deformation of spring. Apparatus of such construction ensures injure-free setting of displaced vertebra by one hand for minimal time.

EFFECT: simplified construction, provision for trauma-free cooperation of instruments with vertebral body, convenient use and reduced time for performing setting of displaced vertebra body.

5 cl, 7 dwg

Up!