RU2661052C1 - Set of implants for formation of over-arch construction in osteosynthesis of animal spine bone - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention relates to medicine. Set of implants for the formation of a over-arch construction in the osteosynthesis of the animal's spine bone consists of plates with holes, rods, plate holders, pressing bars, vertebral screws for the over-arch constructions with plates in the form of stationary screw-plate holders, submersible screws and fastening structures of screws with bushings, vertebral screws of the over-arch constructions with rods, which include screws with a head in the form of a grooved hook with a V-shaped profile in section, and also polyaxial screws having a spherical head with a V-profile slot.

EFFECT: invention provides assistance of spine osteosynthesis irrespective of anatomical conditions, increased fixation strength, the possibility of installing the implant system based on a specific clinical situation with rational placement and an acceptable arrangement of the fixing system; the effectiveness of treatment of a fracture in animals is improved due to the variety of selection of optimal variants for the use of fixators individually for each vertebra.

15 cl, 43 dwg

Description

The invention relates to veterinary medicine and can be used for surgical treatment of animals with injuries and diseases of the spinal column by stabilizing segments of the spine.

A device is known for transosseous osteosynthesis of the spine (see Pat. 163458, IPC A61D 1/00, publ. 07/20/2016), designed to stabilize segments of the spine of animals in injuries and severe degenerative and degenerative lesions. The device comprises a rod and a fixing unit, consisting of transverse fixing rods, nuts, clamping washers. To assemble the structure in the bodies of the vertebrae adjacent to the damaged vertebra, drill holes. A transverse rod is introduced into the resulting hole. Then, a clamping washer is put on the fixing rod, the fixing nut is screwed. Three more transverse rods are installed similarly. The transverse rods introduced into the vertebral bodies are interconnected by two longitudinal rods, placing them in the grooves of the transverse rods. Sequentially screw the fixing nuts over the rods. The disadvantages of the known device are the weak holding power of the fixing elements, which means that the fixation is unreliable, a narrow range of clinical tasks to be solved and the low efficiency of treatment of spinal injuries.

The catalog of Implants and instruments for surgical treatment of the spine is known, using plates and screws to stabilize the thoracic and lumbar spine [http://www.osteomed.ru/om_sources/catalogs/spine_pv_web.pdf - 06.28.2017]. For surgical treatment of a damaged spine, an implant system is used, consisting of vertebral screws, which are inserted into the prepared holes in adjacent vertebrae. After installing all the necessary screws, they are interconnected by fasteners. The resulting rigid structure creates a reliable support for the spinal segment. Although such designs have been successfully applied in humanitarian surgery, a number of problems arise in veterinary medicine. Unlike humans, the animal cannot provide itself with peace in the postoperative period and there is no understanding of what is happening. In addition, due to the structural features of the vertebrae, the biomechanics and physiology of the animal, often adequate fixation of the damaged segment of the spine is a serious problem.

The basis of the invention A set of implants for the formation of a supercharging structure during osteosynthesis of the spine of animals is tasked to expand the set of tools for the reliable stabilization of the damaged part of the spine of the animal as applied to a specific clinical situation.

The technical result is:

- facilitation of spinal osteosynthesis, regardless of the anatomical conditions, an increase in fixation strength;

- the ability to implement the installation of the implant system based on the specific clinical situation, rational placement and acceptable layout of the fixation system;

- the ability to select the type of attachment during a surgical operation, taking into account the anatomical features of the operated animal;

- increasing the effectiveness of treatment of a critical illness in animals due to the variety of selection of optimal options for using external fixators individually for each vertebra.

The claimed technical result is achieved by the fact that the set of implants for the formation of a pressurized structure during osteosynthesis of the spine of animals consists of plates with holes, plate-holders, clamping bars, vertebral screws for pressurized structures with plates in the form of stationary screw-plate holders, immersion screws and fastening structures made of screws with bushings, vertebral screws of supercharged structures with rods, which include screws with a head in the form of a grooved hook with a V-shaped profile in cross section, as polyaxial screws having a spherical head slotted V-shaped profile.

In this case, the plate holders, made in the form of removable blocks and brackets, contain holes for connection with vertebral screws and plates.

The clamping strips having two holes for introducing vertebral screws are arranged to hold the plates and connect to removable blocks.

In addition, for stationary screw-plate holders for pressurized structures with plates, the screw shaft is made integral with the bracket.

Stationary plate-holder screws for pressurized structures with plates are made with tapered threads, as well as with cylindrical threads.

For stationary conical plate-type screws for pressurized structures with plates, the height of the taper thread and the thread pitch decrease towards the end of the shaft.

Immersion screws for supercharged structures with plates are made with heads allowing connection with removable blocks and brackets.

Also, the mounting structure of immersion screws with bushings is made with the possibility of connecting screws with plates, removable blocks and brackets, and bushings for fastening in the bones have an external thread, and for connecting with a screw are provided with an internal thread.

In addition, vertebral screws with a head in the form of a grooved hook with a V-shaped cross section for supercharging structures with rods are connected to the rod by means of a removable block with two internal through mutually perpendicular holes, one of which is designed for hooking the screw and introducing the rod over the hook and screw the clamping nut through the second hole.

Also, vertebral screws with a head in the form of a grooved hook with a V-shaped section in cross section for pressurized structures with rods are made with tapered thread.

Also, vertebral screws with a head in the form of a grooved hook with a V-shaped section in cross section for pressurized structures with rods are made with a cylindrical thread.

In addition, polyaxial screws made with a spherical head with a slot of a V-shaped profile are connected to the rod by means of a fixing block configured to place the rod in the through hole of the block and hold the rod and screw head with a clamping nut.

Also, polyaxial vertebral screws containing a spherical head with a slot of a V-shaped profile are fixed in the bone with rods with a cylindrical thread.

Also, polyaxial screws containing a spherical head with a slot of a V-shaped profile are fixed to the bone with bushings with external and internal thread for the polyaxial screw.

These distinctive features allow us to conclude that there is novelty in the proposed technical solution.

In the course of patent information research, no solutions were found that have features similar to the claimed invention, which allows us to conclude that there are significant differences in it.

The claimed invention is illustrated by drawings.

FIG. 1 - plate;

FIG. 2 - a core;

FIG. 3 - plate holder in the form of a removable block;

FIG. 4 - removable block with a figured groove;

FIG. 5 - removable bracket;

FIG. 6 - removable bracket with a curly groove;

FIG. 7 - clamping bar;

FIG. 8 - clamping unit with a bracket-plate holder;

FIG. 9 - clamping unit with a pad;

FIG. 10 - screw-plate holder with tapered thread;

FIG. 11 - screw-plate holder with tapered thread on a shortened rod;

FIG. 12 - screw-plate holder with a cylindrical thread;

FIG. 13 - a submersible screw with a taper thread and a countersunk taper head;

FIG. 14 - a submersible screw with a taper thread and a threaded cylindrical head;

FIG. 15 - a submersible screw with a tapered thread on a shortened shaft with a tapered head with a slot for a screwdriver;

FIG. 16 - a submersible screw with a tapered thread on a shortened rod with a threaded cylindrical head;

FIG. 17 - a submersible screw with a cylindrical thread, a conical head, a thrust platform between the thread part and the head;

FIG. 18 - conical sleeve mounting structure;

FIG. 19 - screw for the conical sleeve of the mounting structure;

FIG. 20 - a nut for a fixing structure from a conical sleeve and a screw;

FIG. 21 - a screw with a conical platform between the head and the threaded part;

FIG. 22 - bursting sleeve;

FIG. 23 - a nut for a fixing structure from a bursting sleeve and a screw;

FIG. 24 - screw with a hook grooved with a V-shaped profile and a wide tapered thread;

FIG. 25 - screw with a hook grooved with a V-shaped profile with a shortened rod;

FIG. 26 - screw with a hook grooved V-shaped profile with a cylindrical thread and a thrust platform;

Fig 27 is a screw with a hook grooved V-shaped profile for use with a tapered sleeve 28;

FIG. 28 - screw with a hook grooved V-shaped profile for use with bursting sleeve;

FIG. 29 - conical transitional node;

FIG. 30 - removable locking unit;

FIG. 31 - polyaxial immersion screw with a cylindrical thread, a fixing block, a clamping nut;

FIG. 32 - polyaxial screw for connection with a conical sleeve;

FIG. 33 - polyaxial screw for connection with a bursting sleeve;

FIG. 34 is a plate-based stabilizing system using pressure bars;

FIG. 35 is a stabilizing system based on plates using stationary conical screw plate holders;

FIG. 36 - stabilization of spinal segments by a supercharged design based on plates using clamping plates and removable blocks;

FIG. 37 - stabilization of spinal segments by a supercharged design based on plates using removable blocks and immersion screws;

FIG. 38 - stabilization of the segments of the spine by a supercharged design based on plates using removable blocks and immersion screws;

FIG. 39 - stabilization of spinal segments by a supercharged design based on plates using screws with bushings and removable blocks

FIG. 40 - stabilization of the segments of the spine by a supercharged design based on rods using immersion screws with a head in the form of a grooved hook with a V-shaped profile;

FIG. 41 - stabilization of spinal segments by a super-core rod-based structure using bushings and screws with a head in the form of a grooved hook with a V-shaped profile;

FIG. 42 - stabilization of spinal segments by a super-core rod-based structure using polyaxial screws.

Five sizes of implants for animals weighing from 2 to 80 kg are provided in the size line.

To stabilize the damaged segments of the spine, connecting plates 1 (Fig. 1) with a curly or straight contour and threaded holes 2 are used, as well as connecting rods cylindrical 3 (Fig. 2).

Plate holders. Designed for the formation of pressurized structures and holding the plates in a given position, as well as preventing their displacement. The plate holders are represented by removable blocks 4 (Fig. 3, Fig. 4) and removable brackets 8 (Fig. 5, Fig. 6). In accordance with the invention, the plate holders are made wider than the retained plates 1. Due to the anatomy of the animal bones, emphasis should be placed on increasing the contact area of the structural elements with a small immersion depth of the clamps, therefore plate holders having a larger contact area compared to the plates increase the holding force of the stabilizing system.

The removable block holder 4 (Fig. 3) is made in the form of a rectangular housing, which has a square 5 and round 6 through holes on opposite sides of the housing for connection with fasteners. In another embodiment, the plate holder 4 is made with an additional curly groove 7 on an adjacent wall (Fig. 4).

The removable bracket 8 (Fig. 5) is made with a round through hole 9 at the base. In another embodiment, the bracket 8 has an additional curly groove 10 on an adjacent wall (Fig. 6). All openings are intended for connection with system elements.

Clamping strips. Designed to enhance fixation and provide the surgeon with the opportunity to choose the type of attachment, taking into account the anatomical features of the animal. The clamping strips are arranged in the transverse direction with respect to the plate 1.

The clamping bar 11 (Fig. 7) is a block containing two seats with holes 12 for the introduction of fixing screws. When a general structure is formed, fixing elements of the structure are introduced into the holes 12 vertically. The pressure bar 11 is applied to the plate 1, combining, depending on the need, with one of the holes of the plate; fixing screws are inserted into both holes of the clamping plate 11, which are screwed to the spinous processes. Thus, the fixation of the desired segment is reinforced with a second screw. The outer surface of the clamping block 11 has a granular surface, contributing to a more durable connection of the implant with the bone and osseointegration due to the growth of bone tissue in the pores.

In the second embodiment, the clamping bar 13 (Fig. 8) is a clamping block 11, made at the same time with the bracket-plate holder with blind walls to increase strength and durability. When assembling the general design, the bracket is pressed with a fixing bolt to the plate 1, two fixing screws are inserted into the holes 12 in parallel, reinforcing the fixation.

The third embodiment of the clamping bar 14 (Fig. 9), made at the same time with the platform, in the center of which there is a conical head 15 for interfacing with the curly groove 10 of the bracket 8, contributes to the rational placement and creation of an effective layout of the stabilizing system.

Screws for holding plates. Designed to organize optimal options for stabilizing structures based on plates. They allow for accurate reposition and fixation of the damaged vertebral segment.

1. Stationary plate-head screws. For screws of this group, the shaft of the screw is performed at the same time with the bracket-plate holder. In FIG. 10 screw-plate holder 16 has a tapered thread 17, the height of which decreases in the distal sections, and the distance between the turns increases in the proximal direction, which ensures strong jamming in the spongy bone tissue. The conical shaft of the screw 16 thickens to the proximal end, which also helps to fix the screw in a loose spongy body of the vertebra. The thickness of the screw is greatest near the fixation point, that is, in the area most at risk of fracture. The base of the bracket, as well as the surface of the rod between the threads, are made granular to achieve effective osseointegration. All screws are self-tapping.

In another embodiment (Fig. 11) of the screw-holder 18 wide taper thread 19 is made on a shortened rod.

In the third embodiment, the screw plate holder 20 (Fig. 12) has a straight cylindrical thread 21.

2. Immersion screws. Effective when installed in dense bone tissue. In FIG. 13 immersion screw 22 with a wide taper thread 17 and countersunk taper head 15. In the prefabricated design, the immersion screw 22 is mated to the removable unit 4 through a figured groove 7 or with a removable bracket 8.

In the second embodiment (Fig. 14), the immersion screw 23 with a wide taper thread 17 has a threaded cylindrical head 24 with a slot for a screwdriver. After installing the screw 23 on the head 24, place the plate holder (4 or 8) with the plate and combine the head 24 with the threaded hole 2 of the plate 1.

In the third embodiment, the immersion screws are made with a wide taper thread and a shortened shaft 19, the screw 25 (Fig. 15) having a conical head 15 with a slot for a screwdriver, and the immersion screw 26 (Fig. 16) with a cylindrical head 24.

The immersion screw 27 (Fig. 17), designed to fix the vertebrae, contains a rod with a cylindrical thread, a conical head 15 with a slot for a screwdriver, and a thrust platform 28 between the thread part and the head 15.

3. Fixing structures from screws with bushings. Effective when immersed in loose bone tissue. Strength and rigidity of fixation is achieved through the use of a fastening structure consisting of a screw and a sleeve and a fixing nut.

In FIG. 18 shows a sleeve 29 in the form of a cone with a wide external conical thread and with an internal cylindrical threaded channel. The surface of the sleeve 29 between the external turns of the thread has a granular structure for the purpose of effective osseointegration. The screw 30 (Fig. 19) for the sleeve 29 has a corresponding threaded part, as well as a conical head 15 with a slot for a screwdriver and an abutment platform 28. When assembling the structure, a screw 30 is inserted into the internal channel of the sleeve 29, which is fixed with a nut 31 (Fig. 20) .

The screw 32 (Fig. 21) between the head 15 and the threaded part has a conical platform 33 for landing in the sleeve 34. The cylindrical sleeve 34 (Fig. 22) is made with external and internal thread. At the opposite ends of the sleeve 34 there are three grooves intended for bilateral expansion in the bone. A screw 32 is inserted into the inner channel of the sleeve 34 and screwed until the upper grooves of the sleeve 34 extend. The nut 35 is screwed onto the lower end of the screw 32 (Fig. 23) until the lower grooves of the sleeve 34 are extended. When assembling the stabilizing structure, the sleeve 34 is screwed into the bone prepared channel screw and nut and bursting of the sleeve achieve a strong and rigid fixation of the implant.

Screws for bar stabilizing structures. Designed to organize the best designs of the rod type to stabilize the damaged spine and fix the vertebra.

1. Screws with a head in the form of a grooved hook having a V-shaped section.

Similar to the screws used in plate designs, many screws for connecting to the rods are represented by conical and cylindrical screws, as well as screws with bushings. In FIG. 24 a screw 36 with a wide taper thread 17 and a hook 37. In FIG. 25 screw 38 with a shortened shaft 19 and a grooved hook 37.

Screw 39 (Fig. 26) with hook 37, with cylindrical thread and thrust platform 28.

In FIG. 27, a slotted screw 37, used with a tapered sleeve 29, is shown, and FIG. 28 - screw 41 with a grooved hook 37, mating with the expanding sleeve 34. The screw 40 can also be used with the expanding sleeve 34, if you use a tapered adapter node 42 (Fig. 29) with an internal through hole and external stiffeners. The screw 40 is inserted into the through hole of the adapter assembly 42, and then placed in the sleeve 34 and, combining the stiffeners of the adapter module 42 with the slots of the sleeve 34, the upper expansion of the sleeve 34 is carried out. Then, the nut 35 is screwed onto the lower end of the screw 40 to expand the lower grooves of the sleeve 34 .

All screws with grooved hooks are connected to the shaft 3 to form a stabilizing system using a removable locking block 43 (Fig. 30). Block 43 includes a housing with internal through mutually perpendicular holes, where the horizontal hole 44 is intended for engagement with a grooved hook 37 of the screw, and a rod 3 is placed over the grooved hook 37. screws, keep the vertebra in the achieved position of reposition, and also prevent the displacement of the vertebrae in the postoperative period.

2. The screws are polyaxial.

For screws of this group, to interface with the rod 3, the head 47 is spherical with a V-shaped slot 48. In stabilizing structures, immersion screws 49 with a cylindrical thread (Fig. 31), as well as screws 50 (Fig. 32) and 51 (Fig. . 33), which are used in combination with bushings 29 and 34, respectively. The screws 3 are connected to the rod using the fixing block 52 (Fig. 31) and the clamping nut 53. The fixing block 52 is made in the form of a cylindrical body with a through axial hole, as well as with oval grooves 54 located in the lower part of the body perpendicular to its axis, for passing the rod 3 through them. An internal thread 55 is made in the upper part of the housing for connection with the clamping nut 53. When assembling the structure, it becomes possible to achieve a more accurate reduction, since the combination of a spherical head 47, a figured slot 48 and an oval hole 53 allows you to position the connected parts in the required spatial position.

The present invention is used as follows. To eliminate spinal deformities, various configurations of the stabilizing system with the optimal number of connections are used.

A plate-based stabilizing system using pressure bars (Fig. 34). After separation of the soft tissues, two channels are drilled in two adjacent spinous processes of the vertebrae. Two screws are inserted into the holes 12 of the pressure bar 13 and driven into the prepared channels. On the opposite side of the spinous processes on the screws (you can use the screws proposed in application No. 2017119507, filing date 02/06/2017. Metric & Metric system for bone osteosynthesis) put on the clamping plate 11 and tighten the fixing nuts. Inserting the key into the slot on the screw head, screw the assembly to the spinous process. After that, a plate 1 is inserted into the brackets of the clamping straps 13. Then, a clamping bolt is inserted into the threaded hole 2 of the plate 1 and the plate 1 is pressed against the brackets 13. The formed supercharging structure firmly connects the adjacent vertebrae to each other.

A stabilizing system based on plates using stationary conical-threaded plate-head screw (Fig. 35). After providing, according to the generally accepted method, operative access to the bodies of adjacent vertebrae, channels are formed in them using a drill. Fixed channel plate screws 16 and 18 with wide taper threads are introduced into the channels. In the brackets of the installed vertebral screws, a plate 1 is placed, which is pressed to the brackets with fixing bolts.

Stabilization of the segments of the spine by a supercharged design based on plates using clamping plates and removable blocks (Fig. 36). They provide quick access to the base of the spinous processes of two adjacent vertebrae, then with the help of a drill in the spinous processes form two parallel channels for the screws. The selected screws are inserted into the holes 12 of the pressure plate 14 (not shown) and screwed into the prepared channels. On the adjacent vertebra perform similar actions. After that, the bracket-plate holder 8 is mounted on the conical head 15 of the clamping bar 14 on the one hand, and on the other, a removable block of the plate holder 4. A plate 1 is placed in the plate holders and fixed with clamping bolts, making reliable fixation of the operated spine.

Stabilization of segments of the spine by a supercharged design based on plates using removable blocks and immersion screws (Fig. 37). Providing quick access to the vertebral bodies, they form channels in the vertebrae with a drill to insert the immersion screws 23 and 26. After installing the screws, they are mated to removable plate holders 4, into which the plate 1 is mounted, pressing with bolts.

Stabilization of the segments of the spine by a supercharged design based on plates using removable blocks and immersion screws (Fig. 38). Providing quick access to the vertebral bodies, with the help of a drill, channels are formed in the spinous processes into which the immersed cylindrical screws 27 are inserted. On the screw heads, removable plate holders 4 and 8 are installed, into which the plate 1 is inserted and fixed with clamping bolts.

Stabilization of the spinal segments by a supercharged design based on plates using screws with bushings and removable blocks (Fig. 39). After providing quick access to the bodies of the vertebrae adjacent to the damaged one, the channels for introducing the bushings 29 and 34 are formed using a drill. A screw 30 is inserted into the sleeve 29, onto which the nut 31 is screwed. A screw 32 is inserted into the sleeve 34 and screwed until the upper grooves of the sleeve are bursting 34. A nut 35 is screwed onto the lower end of the screw 32. The bushings are installed in the prepared channels and the head 15 of the screw 30 is mated with a bracket 8 with a figured groove 10. On the other hand, the head of the screw 32 is mated with a removable block 4 with a figured groove 10. In the plate holders 4 and 8 fastens b ltami plate 1.

Stabilization of the spinal segments with a super-cradle-based rod design using immersion screws with a head in the form of a grooved hook with a V-shaped profile (Fig. 40). After providing quick access to the vertebral bodies, the channels for introducing screws 36 and 38 are formed with a drill. After installing the screws in the channels, the hooks 37 of each screw are inserted into the hole 44 of the blocks 43. Then, a cylindrical rod 3 is placed on top of the hook, which is tightly on top they are pressed against the grooved hook 37 by the clamping nut 46. As a result, the shaft and screws are held in a fixed position.

Stabilization of segments of the spine by a rod-based superstructure design using bushings and screws with a head in the form of a grooved hook with a V-shaped profile (Fig. 41). After providing quick access to the vertebral bodies adjacent to the damaged one, the channels for introducing the bushings 29 and 34 are formed using a drill. They assemble the sleeve 29, screw 40, nut 31, and also sleeve 34, screw 41, nut 35 and screw into prepared channels. After that, the hook 37 of each screw is placed in the block 43. On top of them through the hole 44 (Fig. 30) enter the rod 3, which with the help of the clamping nuts 46 is tightly pressed against the hook 37, tightly fixing the rod and screws in a predetermined position.

Stabilization of segments of the spine with a super-core rod-based structure using polyaxial screws (Fig. 42). Providing quick access to the vertebral bodies, with the help of a drill, channels are formed in the spinous processes for insertion of a submersible cylindrical screw 49 and a screw 51 with a sleeve 34. Next, a screw 49, a fixing block 52, a clamping nut 53, and also a sleeve 34, a screw are assembled 51, nut 35, locking block 52, pressure nut 53. Each assembly is screwed into its prepared channel. After that, the rod 3 is inserted into the through holes 54 of the fixing blocks 52 and tightly pressed by the nuts 53 to the slot 48 of the spherical head 47 of the polyaxial screws (Fig. 31).

All elements of the system are concentrated in a special container (Fig. 43) for storage in a convenient and compact form.

It should be noted that the present invention provides surgeons with the possibility of using in numerous other specific forms, not beyond the scope of the claimed invention. Presented embodiments of the invention should be considered as illustrative, but they can be changed within the claims.

Claims (15)

1. A set of implants for the formation of a supercharged structure during osteosynthesis of the vertebral column of animals, consisting of plates with holes, rods, plate holders, clamping plates, vertebral screws for supercharged structures with plates in the form of stationary screw plate holders, immersion screws and fastening structures of screws with bushings, vertebral screws of supercharged structures with rods, which include screws with a head in the form of a grooved hook with a V-shaped profile in cross section, as well as polyaxial screws with spherical head with a slot of a V-shaped profile. 2. A set of implants according to claim 1, characterized in that the plate holders, made in the form of removable blocks and brackets, contain through holes for connection with vertebral screws and plates. 3. A set of implants according to claim 1, characterized in that the clamping strips with holes for introducing vertebral screws are able to hold the plates and connect to removable blocks. 4. A set of implants according to claim 1, characterized in that for stationary screw-plate holders for pressurized structures with plates, the screw shaft is integral with the bracket. 5. A set of implants according to claim 4, characterized in that the stationary plate-head screws for pressurized structures with plates are made with tapered thread. 6. A set of implants according to claim 4, characterized in that the stationary plate-head screws for pressurized structures with plates are made with a cylindrical thread. 7. A set of implants according to claim 4, characterized in that for stationary conical plate-type screws for pressurized structures with plates, the height of the tapered thread and the thread pitch are reduced towards the end of the shaft. 8. A set of implants according to claim 1, characterized in that the immersion screws for pressurized structures with plates are made with heads that allow connection with removable blocks and brackets. 9. A set of implants according to claim 1, characterized in that the fastening structures of immersion screws with bushings are configured to connect screws to plates, removable blocks and brackets, and the bushings for fastening to the bones have external threads, and for connecting to the screw provide internal carving. 10. A set of implants according to claim 1, characterized in that the vertebral screws with a head in the form of a grooved hook with a V-shaped profile in cross section for pressurized structures with rods are connected to the rod using a removable block with two internal through mutually perpendicular holes, and horizontal the hole is designed to hook the screw and insert the rod over the hook, and screw the clamping nut through the second hole. 11. A set of implants according to claim 9, characterized in that the vertebral screws with a head in the form of a grooved hook with a V-shaped profile in cross section for pressurized structures with rods are made with tapered thread. 12. A set of implants according to claim 9, characterized in that the vertebral screws with a head in the form of a grooved hook with a V-shaped profile in cross section for pressurized structures with rods are made with a cylindrical thread. 13. A set of implants according to claim 1, characterized in that the polyaxial screws made with a spherical head with a slot of a V-shaped profile are connected to the rod with the help of a fixing block made with the possibility of placing the rod in the through grooves of the block and holding the rod and the pressure head with a nut. 14. A set of implants according to claim 13, characterized in that the polyaxial vertebral screws containing a spherical head with a slot of a V-shaped profile are made with a cylindrical thread. 15. A set of implants according to claim 13, characterized in that the polyaxial screws containing a spherical head with a slot of a V-shaped profile are fixed to the bones with bushings with external thread and internal thread for the screw.

Images