CN210903213U - Self-body bone trimming device for spinal surgery - Google Patents

Abstract

The utility model relates to a spinal surgery autogenous bone trimming device, which comprises a base, a hinge shaft, an upper cover, a cutter and a thimble; the base and the upper cover are circular and are equal in size, one end of the upper cover is hinged to the base through a hinge shaft, a cylindrical through hole is formed in the other end of the upper cover, the ejector pin is in threaded connection with the upper cover through the through hole, the cutter is in threaded connection with the inner surface of the upper cover, and the cutter is fixedly connected with a plurality of cutters which are arranged in a staggered mode. The utility model discloses a backbone surgery autologous bone trimming means through the cutter that interlocks each other, builds the blank of multiple specification, can obtain shape rule, controllable bone strip of size and bone grain according to the operation needs, easy operation, laborsaving, at the pruning in-process, medical personnel do not need the direct contact autologous bone to avoid sharp-pointed bone piece fish tail medical personnel, cause the iatrogenic injury.

Description

Self-body bone trimming device for spinal surgery

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a backbone surgery autologous bone trimming means.

Background

The bone grafting fusion is one of the most common operation modes in orthopedics department, and has obvious advantages in biomechanics and clinic. The adjacent lumbar vertebrae are fused through surgical treatment, the normal arrangement of the lumbar vertebrae is recovered, the nerve compression is relieved, and the stability of the spine is reconstructed. Such as: the lumbar vertebra posterior internal fixation and intervertebral bone grafting fusion are the main operation methods for treating lumbar disc herniation, lumbar spinal stenosis and lumbar spondylolisthesis at present. In addition, it is known that clinical bone grafting in trauma orthopedics is used to treat comminuted fracture bone defects, nonunion of fracture parts, and the like, and local bone grafting is used to promote bone trauma repair. The bone grafting is preferably from autogenous bone, can reduce the rejection reaction of allogeneic bone and the like, is mostly taken from the ilium, but the bone area taken down is larger, and the callus growth can be promoted by utilizing the partial blood transport reconstruction of the fracture only by trimming into fine bone strips to be planted at the affected part and increasing the contact area.

Therefore, how to trim the bone grafting block to ensure that the volume of the bone grafting block is uniform and consistent meets the requirements of clinical bone grafting in orthopaedics is an important problem in bone grafting fusion. At present, instruments such as rongeurs, osteotomes, scalpels and the like are used clinically to trim the removed autologous bones, but the process of trimming the bones is complex, the trimming area is different, iatrogenic injuries of medical staff can be caused if trimming is too thin in the trimming process, the chance of iatrogenic infection can be increased, and inconvenience is brought to the work of the medical staff.

Chinese patent document 201320520072.X discloses a bone grafting trimmer for orthopedics department, and it includes that chassis one end is equipped with the stand, and the stand upper end is associative with the depression bar through the loose axle, characterized by: the utility model discloses a pressure bar, including depression bar front portion, chassis, sword groove, discharge gate and take-up (stock) pan, the depression bar front portion is equipped with the cutter, the depression bar rear portion is the handle, be equipped with the infundibulate hopper on the chassis, infundibulate hopper one side is equipped with the sword groove, and infundibulate hopper has. When in use, the autogenous bone to be trimmed can be placed in the funnel-shaped hopper, and then the handle of the pressure rod is pressed downwards, so that the autogenous bone to be trimmed can be cut into bone strips with the same specification by using less force. Chinese patent 201320479758.9 discloses a trimming mold for an autologous bone grafting block, which comprises a base, a lower mold fixed on the base, a hinge shaft and an upper pressing mold; the lower die is composed of a plurality of cutters which are arranged in a staggered mode, a hinge shaft is arranged at one end of the base, the upper pressing die is movably connected with the base through the hinge shaft and composed of a plurality of raised solid upper pressing modules, and the upper pressing modules correspond to the cutters in a space one-to-one mode. However, no report is found about the new autogenous bone trimming device for spinal surgery.

Disclosure of Invention

The utility model aims at providing a spinal surgery autologous bone trimming device aiming at the defects of the prior art.

In order to achieve the purpose, the utility model adopts the technical proposal that:

a spinal surgical autogenous bone trimming apparatus, comprising: the cutting machine comprises a base (1), a hinge shaft (2), an upper cover (3), a cutter (4), a cutter (5) and a thimble (6); wherein, base (1) and upper cover (3) are circular, and the size is equivalent, and upper cover (3) one end is articulated through hinge (2) with base (1), and the other end is provided with cylindrical through-hole (31), thimble (6) front end is long and thin steel needle (61), and steel needle (61) one end is connected with through-hole (31) assorted connecting portion (62), and the connecting portion (62) other end is handle (63), and thimble (6) are through-hole (31) and upper cover (3) threaded connection, cutterbar (4) and upper cover (3) internal surface threaded connection, cutter (5) of the mutual staggered arrangement of a plurality of fixedly connected with in cutterbar (4).

As an optimal technical proposal of the utility model, the autogenous bone trimming device is made of metal material.

More preferably, the cutting knife (5) is made of alloy steel mainly made of tungsten steel.

As a preferred technical scheme of the utility model, form 5 kinds of blank of variation in size between cutter (5), be 3mm × 10 mm's first level blank (51), 2mm × 10 mm's second level blank (52), 3mm × 3 mm's third level blank (53), 2mm × 2 mm's fourth level blank (54) and 1mm × 1 mm's fifth level blank (55) respectively.

As a preferred technical scheme of the utility model, the internal surface that base (1) and upper cover (3) do not connect the end is equipped with magnet (7).

As a preferred technical scheme of the utility model, base (1) internal surface is provided with sign line (11) corresponding with cutter (5), is equipped with on sign line (11) anti-skidding coating (12).

The utility model has the advantages that:

1. the utility model discloses a backbone surgery autologous bone trimming means constructs the blank of multiple specification through the cutter that interlocks each other, can obtain shape rule, the controllable bone strip of size and bone grain, easy operation, laborsaving according to the operation needs.

2. In the trimming process, medical personnel do not need to directly contact autologous bones, so that the medical personnel are prevented from being scratched by sharp bone fragments and causing iatrogenic injuries.

3. The bone grain that bone grafting adopted is generally the particle diameter less, and the bone grain blocks easily in the blank of cutter after the cutting, screws off the cutterbar this moment, uses the thimble alright clear up empty check, not only can prevent trimming means's damage, can also prevent the waste of autologous bone, and the bone to other positions that minimizes causes the damage.

4. When the thimble is arranged in the upper cover, the handle extends out of the upper cover, so that the opening and closing of the upper cover can be conveniently controlled.

5. In this embodiment, a marking line is provided to facilitate the position correspondence of the upper and lower covers, so as to determine the position of the autologous bone prevention, obtain bone particles with a required size, and the anti-slip coating is used to prevent the autologous bone from sliding in the base, which results in the cutting shape not conforming to the expected shape.

6. The magnet is convenient for storing and managing the device when the device is not used.

Drawings

Fig. 1 is a schematic structural view of the autogenous bone trimming device of the present invention.

Fig. 2 is a schematic structural view of the cutter portion of the present invention.

Fig. 3 is a schematic structural view of the thimble portion of the present invention.

Fig. 4 is a schematic structural view of an autogenous bone trimming device according to embodiment 2 of the present invention.

Detailed Description

The invention will be further described with reference to the following examples and with reference to the accompanying drawings.

The reference numerals and components referred to in the drawings are as follows:

1. base 2, hinge shaft 3, upper cover

4. Cutter 5, cutter 6 and thimble

7. Magnet 11, mark line 12, anti-skid coating

31. Through hole 51, first stage space 52, second stage space

53. Third level blank 54, fourth level blank 55, fifth level blank

61. Steel needle 62, connecting part 63 and handle

EXAMPLE 1 autobone trimming device for spinal surgery

Please refer to fig. 1-3, fig. 1 is a schematic structural view of the autogenous bone trimming device of the present invention, fig. 2 is a schematic structural view of the cutter part of the present invention, and fig. 3 is a schematic structural view of the thimble portion of the present invention.

As shown in fig. 1, the utility model discloses a spinal surgery autologous bone trimming means, the whole metal material who adopts the high strength makes, especially cutter 4 parts, the adoption uses the alloy steel that tungsten steel is the main to make, intensity is big, sturdy and durable, the cutting is sharp, base 1 is circular container, hinge 2 and upper cover 3 are articulated through to one end, thereby realize opening and shutting of upper cover 3 and base 1, and base 1 and upper cover 3 size are equivalent, both agree with completely when closing, the one side that upper cover 3 is relative with base 1 and 4 threaded connection of cutterbar, cutter 5 of the mutual staggered arrangement of a plurality of fixedly connected with in cutterbar 4, at the other end of upper cover 3, the chisel has a columniform through-hole 31, be used for holding thimble 6.

As shown in fig. 3, the front end of the thimble 6 is a slender steel needle 61, one end of the steel needle is connected with a connecting part 62 capable of being screwed with the through hole 31, and the other end of the connecting part 62 is a handle 63, so that the thimble 6 is screwed into the through hole 31 when not in use.

As shown in figure 2, the cutters 5 in the cutter 4 are staggered with each other to form 5 kinds of blank spaces with different sizes, namely a first-stage blank 51, a second-stage blank 52, a third-stage blank 53, a fourth-stage blank 54 and a fifth-stage blank 55, and the specifications of the 5 kinds of blank spaces are 3mm × 10mm, 2mm × 10mm, 3mm × 3mm, 2mm × 2mm and 1mm × 1mm respectively.

The following describes the usage of the present invention with reference to the accompanying drawings and embodiments:

the patient underwent surgery under general anesthesia, from different sites such as: the autogenous bone block is taken out from the iliac bone, the fibula, the rib and the like, and soft tissue on the surface of the bone block is scraped. Opening the trimming device, according to the demand of operation, putting the autologous bone that needs the shearing to the position of cutter 5 corresponding blank, closing the trimming device, pressing upper cover 3 downwards until complete closure, opening upper cover 3, unscrewing cutterbar 4, taking out thimble 6, ejecting the broken bone that will block in the middle of cutter 5 blank, according to the actual conditions of operation, repeat above-mentioned operation, can obtain shape rule, controllable bone strip and bone grain of size. Selecting a bone grafting block with a proper size for bone grafting.

The utility model discloses an effect and effect:

at present, instruments such as a rongeur, an osteotome and an osteotome which are clinically used for trimming the removed autologous bone have complex bone trimming process and different trimming areas, if the trimming is too thin in the trimming process, the iatrogenic injury of medical staff can be caused, the iatrogenic infection probability can be increased, and the inconvenience is brought to the work of the medical staff. The utility model discloses a spine surgery autogenous bone trimming means, whole adopt high strength metal material to make, especially the cutter 4 part adopts tungsten steel to be made for the alloy steel that is the main, and intensity is big, and is sturdy and durable, cuts sharply, through the cutter 5 that interlocks each other, constructs the blank of multiple specification, can according to the operation needs, obtains shape rule, controllable bone strip and bone grain of size, easy operation, laborsaving; in the trimming process, medical staff do not need to directly contact autologous bones, so that iatrogenic injuries caused by the fact that the medical staff are scratched by sharp bone fragments are avoided; in addition, the bone grains adopted for bone grafting are generally small in grain size, the bone grains are easy to block in the blank space of the cutter after cutting, the cutter is unscrewed at the moment, and the blank space can be cleaned by using the ejector pin, so that the damage to the trimming device can be prevented, the waste of autogenous bones can be prevented, and the damage to bones at other parts is reduced as much as possible; when the thimble 6 is arranged in the upper cover 3, the handle 63 extends out of the upper cover 3, so that the opening and closing of the upper cover 3 can be conveniently controlled.

Embodiment 2 a spinal surgery autogenous bone trimming device

Referring to fig. 4, fig. 4 is a schematic structural view of an autogenous bone trimming device according to embodiment 2 of the present invention.

The spine surgery autogenous bone trimming device of the embodiment is basically the same as the spine surgery autogenous bone trimming device of the embodiment 1, except that the embodiment is also provided with a mark line 11, a protective coating 12 and a magnet 7.

As shown in fig. 3, a mark line 11 is provided on the inner surface of the base 1, a transparent anti-slip coating 12 is applied on the mark line 11 corresponding to the position of the cutter 5, and a magnet 7 is provided on the inner surface of the non-connecting end of the base 1 and the upper cover 3, facing each other, and attracting each other after approaching each other.

In the embodiment, the marking line 11 is arranged to conveniently correspond the positions of the upper cover and the lower cover, so as to determine the position for preventing the autogenous bone, obtain bone particles with a required size, and the anti-slip coating is used for preventing the autogenous bone from sliding in the base 1, so that the cut shape is not in accordance with the expected shape; the magnet is provided to facilitate storage and management of the device when not in use.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and additions can be made without departing from the principles of the present invention, and these improvements and additions should also be regarded as the protection scope of the present invention.

Claims (6)

1. A spinal surgical autogenous bone trimming device, comprising: the cutting machine comprises a base (1), a hinge shaft (2), an upper cover (3), a cutter (4), a cutter (5) and a thimble (6); wherein, base (1) and upper cover (3) are circular, and the size is equivalent, and upper cover (3) one end is articulated through hinge (2) with base (1), and the other end is provided with cylindrical through-hole (31), thimble (6) front end is long and thin steel needle (61), and steel needle (61) one end is connected with through-hole (31) assorted connecting portion (62), and the connecting portion (62) other end is handle (63), and thimble (6) are through-hole (31) and upper cover (3) threaded connection, cutterbar (4) and upper cover (3) internal surface threaded connection, cutter (5) of the mutual staggered arrangement of a plurality of fixedly connected with in cutterbar (4).

2. The autogenous bone trimming device of claim 1 wherein the autogenous bone trimming devices are each made of a metallic material.

3. The autogenous bone trimming device according to claim 2, characterized in that the cutting knife (5) is made of a steel alloy based on tungsten steel.

4. The autogenous bone trimming device according to claim 1, characterized in that the cutters (5) form 5 spaces of different sizes, respectively a primary space (51) of 3mm × mm, a secondary space (52) of 2mm 3610 mm, a tertiary space (53) of 3mm × mm, a quaternary space (54) of 2mm × mm and a fifth space (55) of 1mm × mm 1 mm.

5. The autogenous bone trimming device according to claim 1, characterized in that the inner surfaces of the unconnected ends of the base (1) and the upper cover (3) are provided with magnets (7).

6. The autogenous bone trimming device according to claim 1, characterized in that the inner surface of the base (1) is provided with a marking line (11) corresponding to the cutting knife (5), the marking line (11) being provided with an anti-slip coating (12).

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