CN104083191A

CN104083191A - Spine osteotomy bone knife

Info

Publication number: CN104083191A
Application number: CN201310109690.XA
Authority: CN
Inventors: 陶惠人; 沈超
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-01
Filing date: 2013-04-01
Publication date: 2014-10-08

Abstract

The invention provides a spine osteotomy bone knife which comprises a cutter head, a cutter rod and a cutter handle, wherein the cutter head is arranged at the end part of the cutter rod; the cutter head is provided with a first end part and a second end part; the cutter rod and the first end part are L-shaped; the blade is arranged on the edge of the first end part; the cutter rod and the cutter handle are of an integrated structure in a filling-casting manner. According to the spine osteotomy bone knife, the cutter rod and the first end part are L-shaped, the first end part and the second end part are L-shaped, the first end part is used for cutting the bone across the spinal cord of the spine, the first end part and the second end part are clamped in the bone cutting position of the spine bone, and the stability of the spine osteotomy bone knife in the surgery process is improved; on the other hand, the cutter rod and the cutter handle are of the integrated structure in the filling-casting manner, the loose of the spine osteotomy bone knife after being used for a too long time is avoided, and the security of the spine osteotomy bone knife in surgery is further improved.

Description

Spinal osteotomy osteotome

Technical field

The present invention relates to medical instruments field, relate in particular to a kind of spinal osteotomy osteotome.

Background technology

In correcting the operation of deformity of spine, first crooked spinal bone to be carried out to osteotomy removal with scalpel.Fig. 1 is the spinal column profile schematic diagram of pathological changes state, and Fig. 2 is spinal column Structure of cross section schematic diagram; As shown in Figure 1, rachiocamposis is more serious, and be to correct this crooked spinal column, conventionally operation way is first to use rongeur to sting the dash area of pedicle of vertebral arch in Fig. 21 and rib 4 to remove, and then use the common osteotome of prior art or abrasive drilling that the dash area of vertebral body 2 is removed, last again the remainder of vertebral body 2 is removed, and because the stopping of vertebral column development deformity and spinal cord, the vertebral body of remainder can only carry out Partial Resection; Fig. 3 is for removing the spinal column profile schematic diagram of part pedicle of vertebral arch and vertebral body, as shown in Figure 3, remove after part pedicle of vertebral arch and rib, centre reserves part white space, Fig. 4 is used the spinal column profile schematic diagram after external force pressurization merges by the spinal column of Fig. 3, as shown in Figure 4, patient's spinal column is just the rectification state shown in Fig. 4 by the pathological changes state rectification of Fig. 1.When using the common osteotome of prior art or abrasive drilling to remove vertebral body 2 remainder, because the top vertebral body 2 is exactly spinal cord, deviation slightly in operation process, spine cutter or abrasive drilling will touch spinal cord and cause patient to paralyse.Fig. 5 is the common osteotome structural representation of prior art, and as shown in Figure 5, existing common osteotome comprises handle of a knife 14, knife bar 12, cutter head 11, wherein, between handle of a knife 14 and knife bar 12, by screw 13, be fixed as one, cutter head 11 and knife bar 12 be type linearly, and the end of its cutter head is rectangle, when using the common osteotome of prior art to carry out osteotomy to spinal column, due to cutter head 11 with knife bar 12 on same straight line, and its two ends have point, the osteotome of this spline structure is easy to touch spinal bone nerve around in operation process, and by screw 13, be fixed as one between handle of a knife 14 and knife bar 12, long when service time, between handle of a knife 14 and knife bar 12, can produce loosening, and produce loosening after, in operation process, easily produce dislocation, and dislocation also extremely easily causes touching spinal cord, once make spinal cord produce damage and touch spinal cord, the consequence that just may cause patient to paralyse.

Summary of the invention

The object of the invention is to solve the defect that above-mentioned prior art exists, the spinal osteotomy osteotome that a kind of safety in utilization is higher is provided.

A spinal osteotomy osteotome, comprises cutter head, knife bar, handle of a knife, and cutter head is arranged on the end of knife bar, cutter head is provided with first end and the second end, described first end and knife bar are L shape, and first end and the second end are L shape, and blade is arranged on the edge of first end; Knife bar and handle of a knife are cast in and are structure as a whole.

Further, on described handle of a knife, be provided with scraggly texture.

Spinal osteotomy osteotome provided by the invention, by knife bar and cutter head first end are designed to L shape, wherein on the first end of cutter head, blade is set, so the cutter head of structure is when performing the operation, on the one hand, the spinal cord that can make first end walk around spinal column then carries out osteotomy, and first end and the second end can be stuck in to the osteotomy site of spinal bone, has increased the stability of spinal osteotomy osteotome in operation process; On the other hand, the perfusion of knife bar and handle of a knife is structure as a whole, and the loosening property causing after having avoided spinal osteotomy osteotome service time long, has further improved the safety of using the operation of spinal osteotomy osteotome.

Accompanying drawing explanation

Fig. 1 is the spinal column profile schematic diagram of pathological changes state;

Fig. 2 is spinal column Structure of cross section schematic diagram;

Fig. 3 is for removing the spinal column profile schematic diagram of part pedicle of vertebral arch and vertebral body;

Fig. 4 is used the spinal column profile schematic diagram after external force pressurization merges by the spinal column of Fig. 3;

Fig. 5 is prior art spinal osteotomy osteotome structural representation;

Fig. 6 is spinal osteotomy osteotome structural representation of the present invention;

Fig. 7 is spinal osteotomy osteotome using state figure of the present invention.

Description of reference numerals: 1-pedicle of vertebral arch, 2-vertebral body, 3-spinal cord, 4-rib, 11-cutter head, 111-the second end, 112-first end, 12-knife bar, 13-screw thread, 14-handle of a knife, 141-texture.

The specific embodiment

For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

Fig. 6 is spinal osteotomy osteotome structural representation of the present invention, and as shown in Figure 6, spinal osteotomy osteotome of the present invention comprises cutter head 11, knife bar 12, handle of a knife 14.Wherein, cutter head 11 is arranged on the end of knife bar 12, and knife bar 12 is structure as a whole with handle of a knife 14 perfusions.Wherein, the end of described cutter head 11 comprises the second end 111 and first end 112, and described first end 112 is L shape with the second end 111, and first end 112 is L shape with knife bar 12, blade is arranged on first end 112, and the outer rim of first end 112 is arc shaped.

The object that the present invention is designed to L shape by cutter head 11 and knife bar 12 is when when using spinal osteotomy osteotome of the present invention to carry out osteotomy to spinal bone, can make first end 112 walk around the spinal cord of vertebral column canal inside on the one hand, then by the second end 111, cutter head 11 is stuck in to the osteotomy site of bone, has reduced the damage probability that spinal cord is caused; On the other hand, knife bar 12 is cast in and is structure as a whole with handle of a knife 14, has avoided the long and loosening phenomenon that causes spinal osteotomy osteotome service time.

Further, be provided with scraggly texture 131 on handle of a knife 14 of the present invention, by texture 131 is set, doctor just more can not produce loosening when holding handle of a knife, has further improved the safety in spinal osteotomy osteotome operation process.

Fig. 7 is spinal osteotomy osteotome using state figure of the present invention, as shown in Figure 7, after using rongeur and abrasive drilling that the dash area in Fig. 7 is removed, again spinal osteotomy osteotome of the present invention is placed on to position as shown in Figure 7, from the outside direction of spinal cord, uses spinal osteotomy osteotome of the present invention slowly to remove remainder vertebral bone.

Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Claims

1. a spinal osteotomy osteotome, comprise cutter head (11), knife bar (12), handle of a knife (14), cutter head (11) is arranged on the end of knife bar (12), it is characterized in that, cutter head (11) is provided with first end (112) and the second end (111), described first end (112) is L shape with knife bar (12), and first end (112) is L shape with the second end (111), and blade is arranged on the edge of first end (112); Knife bar (12) is cast in and is structure as a whole with handle of a knife (14).

2. spinal osteotomy osteotome according to claim 1, is characterized in that, is provided with scraggly texture (141) on described handle of a knife (14).