Device for lengthening nerve trunks

 

The invention relates to medicine and is used in traumatology, orthopedics, neurosurgery, reconstructive surgery for the treatment of defects of the nerve trunks. Device for lengthening nerve trunks contains the drive mechanism and traction node, which is placed in the case. The body and cap are cylindrical in shape. The drive mechanism is designed as two-spreader crowns. - Spreader crowns are rigidly connected by runners. Runners are diametrically. Crowns are one-sided beveled teeth that are installed counter offset by half the width of the base of the tooth and with the gaps between the tops of the teeth of one of the crown and beveled sides of the teeth on the other of the crown. Shifts sufficient to move them all equal armed beam. The rocker is made in the form of a rod, perpendicular to the fixed axis. Axle mounted at one end in a thrust bearing at the bottom of the casing, the other end into the socket on the bottom of the cover. The slot has a depth that provides longitudinal movement of the cover along the axis. Shoulders rocker cover diameter rims. In the lower part of the axle has traction node in the form of a coil mounted on the hub of the flexible shaft. Pull withdrawn through the opening in the housing to the outside. perennia crowns. Twin crowns installed with the possibility of axial movement along the axis on rails. The guides are made on the inner surface of the housing. Cover covering the housing with an inner surface of the annular stop. The emphasis is in contact with the upper crown and a groove on the lateral surface under denotational protrusion on the outer surface of the housing. In the bottom of the case is made ears with holes. The result is more comfort for the patient and accurate convergence of the Central and peripheral ends of the nerve. 2 Il.

The invention relates to medicine and is used in traumatology, orthopedics, neurosurgery, reconstructive surgery for the treatment of defects of the nerve trunks.

There are a number of analogues of the proposed device including Distraction apparatus for lengthening nerve trunks” [1], comprising a ring with spokes associated threaded rods installed on their host traction rods as ligatures, mounted on movable brackets in coaxial threaded hooks.

The disadvantages of this device are cumbersome system of stretching and the risk of infection of the soft tissues at the point where they exit through the skin tracouet to extend the nerve trunks” [2], considered as a prototype. In this arrangement, the ratchet wheel is driven in rotation of the reciprocating movement of the flat spring transmits the motion to the threaded shaft, which converts the rotational movement into translational movement of the threaded rod that absorbs through the ligature requiring a lengthening nerve.

The disadvantages of the prototype should include not protruding above the surface of the device buttons, so as polerowanie through the skin and soft tissues of the end of the flat spring is difficult.

The invention consists in the combination of distinctive features, sufficient to obtain the desired technical result, namely to improve the comfort for the patient and accurate convergence of the Central and peripheral ends of the nerve.

The invention consists in that the device for lengthening nerve trunks containing the drive mechanism and traction node accommodated in the housing, wherein the housing and the cover are cylindrical in shape, the drive mechanism consists of two rigidly connected runners, spaced diametrically-spreader crowns with one-sided beveled teeth, set meetings the sides of the teeth on the other of the crown, sufficient to move them all equal armed beam, made in the form of a rod, perpendicular to the fixed axis mounted at one end in a thrust bearing, is placed on the bottom of the casing, the other end in the socket placed on the bottom cover and having a depth that provides longitudinal movement of the cover along the axis, with the shoulders of the beam overlap the diameter of the crowns, and in the lower part of the axle has traction unit, performed in the form of a coil mounted on its hub a flexible shaft, derived through the hole in the housing to the outside, between the lower crown and the coil is placed a spiral compression spring, retaining in position the twin crowns installed with the possibility of axial movement along the axis of the guides, made on the inner surface of the housing, the cover covering the housing with an inner surface of the focus ring in contact with the upper crown and a groove on the lateral surface under denotational protrusion on the outer surface of the housing, and the housing is in the lower part is equipped with lugs with holes.

The use of two rigidly connected oppositely located crown of crowns with one-sided beveled teeth moves in the ass flat runners Samoobrona form ensures the necessary clearance for movement of the rocker arm between the crowns, and the movement of the runners along the guides prevents rotation of the crowns around the axis.

Securing the rocker arm on an axis, rotating the thrust bearing and the socket cover, while excluding rotation crowns allows you to convert the translational movement of the cover into rotational motion axis mounted on it with a coil.

Installation of crowns shifted relative to each other, half the width of the base of the tooth, ensures the uniformity of movement of the rocker arm.

The presence of nests certain depth in the bottom of the cover, the groove under denotational protrusion on its outer surface, corresponding protrusion on the side surface of the housing, and a compression spring mounted on the axis between the paired crown rims and coil provide a reciprocating motion along an axis. The annular stop at the bottom of the cover serves for uniform transmission of pressure on subsequent links.

Cylindrical body, the cover of which is a button that allows the patient to easily detect the device under the skin and to be able to distraction during the day, after a pre-defined physician number of manipulations (taps) required for convergence of the ends of the nerve and the total time spent mechanism in the body is thrust, where to review the twin crowns conventionally removed from the axis, and in the lid, the upper crown and the body is made sectoral cutouts of Fig.2 - General view of the device in section.

The device comprises a cylindrical housing 1 with the tab 2 on the outer surface and a cylindrical cover 3 with the open groove 4 on the side surface under tab 2 of the housing 1. At the bottom of the housing 1 is made thrust bearing 5. In the thrust bearing 5 axis 6 mounted on it with a coil 7 and a yoke 8. The rocker 8 is placed in the gap between the two rigidly interconnected, crown crowns 9 having oppositely spaced, one-sided beveled teeth 10 and 11. The crowns are connected diametrically spaced flat, Samoobrona form runners that are installed with the possibility of vertical movement along the guide grooves 13, performed on the inner surface of the housing 1. Between the coil 7 and the crown crowns 9 are cylindrical compression spring 14 on the hub of the coil 7 fixed end of the flexible rod 15, which through the opening 16 in the housing 1 is drawn outwards. The upper end of the axis 6 is placed for rotation and axial movement in a cylindrical socket 17 of the cover 3.

In the bottom of the housing 1 is made ears with otwartego plot segment of the limb, producing prolonged nerve. The distance from skeletonema plot until the end of the nerve should be equal to the amount required elongation. The device with a free spool and attached to it a flexible shaft required length is fixed with bone screws to skeletonname part of the bone. The free end of the thrust hem to lengthen the nerve. The wound is sutured in layers so that the seam was on the outside of the projection device, placed in the soft tissues. Subsequently the patient a certain number of times per day produces press “all the way” on a raised below the skin cover shell 1, which moves down a gear screws 9 and involvement in the rotational motion of the rocker arm 8, the pressure on the button is transmitted to the sprockets are moving their runners 12 slots on the chassis 13, compress the spring 14. Rocker arm 8, the source located in the cavity between the teeth 11 of the lower crown “delivered” vertical contour of these teeth to the bevel of the teeth 10 of the upper crown, and, zahvatyvali them, rotatesthe width of the tooth to the vertical contour of the upper crown. When removing the pressure from the button, the vertical contour of the teeth 10 of the upper crown CJSC anotherthe width of the tooth. This cycle is repeated a necessary number of times.

Since the yoke 8 and the coil 7 is rigidly mounted on the axle 6, the rotation of the rocker arm causes the rotation of the reel on which is wound a flexible rod 15, tightening for a extendable end of the nerve.

Sources of information

(1) ABT. mon. No. 1598995, AND 61 IN 17/60, BI No. 38, 1990,

(2) Patent No. 2161918, And 61 IN 17/60, 17/04, BI No. 2, 2001.

Claims

Device for lengthening nerve trunks containing the drive mechanism and traction node accommodated in the housing, wherein the housing and the cover are cylindrical in shape, the drive mechanism consists of two rigidly connected runners, spaced diametrically-spreader crowns with one-sided beveled teeth, established a counter with an offset of half the width of the base of the tooth and with the gaps between the tops of the teeth of one of the crown and beveled sides of the teeth on the other of the crown, sufficient to move them all equal armed beam, made in the form of a rod, perpendicular to the fixed axis mounted at one end in a thrust bearing, placed on the bottom of the casing, the other end in the socket placed on the bottom cover and having a depth, provide the heal beam overlap the diameter of the crowns, and in the lower part of the axle has traction unit, performed in the form of a coil mounted on its hub a flexible shaft, derived through the hole in the housing to the outside, between the lower crown and the coil is placed a helical compression spring that hold in the top position coupled crowns installed to move along the axis on rails, made on the inner surface of the housing, the cover covering the housing with an inner surface of the focus ring in contact with the upper crown and a groove on the lateral surface under denotational protrusion on the outer surface of the shell and the bottom of the case is made ears with holes.

 

Same patents:

The invention relates to medicine, namely to surgery, and may be applicable for the prevention of complications after extensive suturing median laparotomic wound with a pronounced fat, long crushed relentlessly by they, with its deliberate microbial contamination

The invention relates to surgery

The invention relates to medicine, namely to surgery, and may be applicable for the adaptation of tissues with different thickness of the subcutaneous fat

The invention relates to the field of surgery, namely the restoration of broken or damaged otherwise tendons or ligaments

The invention relates to medicine and can be used in laparoscopic treatment of hernias

The invention relates to medicine, namely to abdominal surgery
The invention relates to medicine, namely to abdominal surgery
The invention relates to methods of fixation of free and displaced skin grafts in plastic surgery in orbital and periorbital areas

The invention relates to the field of medicine and medical equipment and can be used in laparoscopic surgery for suturing a perforation of gastroduodenal ulcers

The invention relates to laparoscopic surgery
The invention relates to medicine, namely to surgery, and may be applicable for abdomino-anal resection of the rectum

The invention relates to medicine, namely neurosurgery

The invention relates to medicine, surgery

The invention relates to medicine, surgery

The invention relates to medicine, namely to surgery, and may be applicable for the surgical treatment of achalasia of the esophagus

The invention relates to medical surgical technique

The invention relates to medicine, namely to oral surgery, and can be used in the treatment of patients with complete edentulous lower jaw with a narrow zone of attached gingiva
The invention relates to medicine, surgery, and can be used for the treatment of causalgia after amputation of the lower extremities
The invention relates to medicine and can be used in surgery, orthopedics and traumatology

The invention relates to medicine, namely to orthopedics and traumatology at the formation of bone regeneration in the damaged area of the tubular bones

FIELD: medicine.

SUBSTANCE: method involves applying one or two parallel through draining tubes having lateral perforations. Flow lavage of the retroperitoneal space with antiseptic solutions is carried out via the perforations at room temperature and cooled solutions are administered concurrently with vacuum suction. Omental bursa is concurrently drained using the two parallel through draining tubes. Flow lavage of the omental bursa is carried out using these tubes.

EFFECT: enhanced effectiveness of treatment in healing pyo-inflammation foci.

5 cl, 1 dwg

Up!