CN203208088U

CN203208088U - Spine osteotomy knife

Info

Publication number: CN203208088U
Application number: CN 201320155814
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: 2013-09-25
Anticipated expiration: 2023-04-01

Abstract

The utility model provides a spine osteotomy knife which comprises a knife head, a knife rod and a knife handle. The knife head is arranged at the end of the knife head, the knife head is provided with a first end portion and a second end portion, the knife rod and the first end portion are designed in an L shape, and a blade is arranged at the edge of the first end portion. The knife rod and the knife handle are of an integral structure. The knife rod and the first end portion are designed in an L shape, the first end portion and the second end portion are designed in an L shape, the first end portion can bypass spinal cord of the spine for osteotomy, the first end portion and the second end portion are clamped on the osteotomy portion of the vertebra, and stability of the spine osteotomy knife during operation is increased. On the other hand, the knife rod and the knife handle are of the integral structure, so that loosing of the spine osteotomy knife caused by long-time using can be avoided, and safety of operation using the spine osteotomy knife can be further improved.

Description

Spinal column osteotomy osteotome

Technical field

This utility model relates to medical instruments field, relates in particular to a kind of spinal column osteotomy osteotome.

Background technology

In the operation of correcting deformity of spine, at first the curved spinal bone to be carried out osteotomy with scalpel and remove.Fig. 1 is the spinal column profile sketch map of pathological changes state, and Fig. 2 is spinal column cross section structural representation; As shown in Figure 1, rachiocamposis is more serious, and be to correct this curved spinal, usually the operation way is at first the dash area use rongeur of pedicle of vertebral arch among Fig. 21 and rib 4 to be stung 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 vertebral column development deformity and spinal cord stop that the vertebral body of remainder can only carry out the part excision; Fig. 3 is for removing the spinal column profile sketch map of part pedicle of vertebral arch and vertebral body, as shown in Figure 3, after removing part pedicle of vertebral arch and rib, the part white space is reserved in the centre, Fig. 4 is with the spinal column profile sketch map after the spinal column use external force pressurization merging of Fig. 3, as shown in Figure 4, patient's spinal column is just corrected by the pathological changes state of Fig. 1 and is rectification state shown in Figure 4.When using the common osteotome of prior art or abrasive drilling to remove vertebral body 2 remainders, owing to being exactly spinal cord on the top of vertebral body 2, deviation is arranged slightly in operation process, spine cutter or abrasive drilling will touch spinal cord and cause the 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, be fixed as one by screw 13 between handle of a knife 14 and the knife bar 12, cutter head 11 and knife bar 12 be type linearly, and the end of its cutter head is rectangle; When the common osteotome that uses prior art carries out osteotomy to spinal column, because cutter head 11 and knife bar 12 are on same straight line, and its two ends have point, the osteotome of this spline structure is easy to touch spinal bone nerve on every side in operation process, and be fixed as one by screw 13 between handle of a knife 14 and the knife bar 12, long when service time, can produce loosening between handle of a knife 14 and the knife bar 12, and produce loosening after, in operation process, be easy to generate dislocation, and dislocation also causes touching spinal cord extremely easily, and makes spinal cord produce damage, the just consequence that may cause the patient to paralyse in case touch spinal cord.

The utility model content

The purpose of this utility model is to solve the defective that above-mentioned prior art exists, and provides a kind of safety in utilization higher spinal column osteotomy osteotome.

A kind of spinal column 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 the L shape, and first end and the second end are the L shape, and blade is arranged on the edge of first end; Knife bar and handle of a knife are irritated the structure that is cast as one.

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

The spinal column osteotomy osteotome that this utility model provides, by knife bar and cutter head first end are designed to the L shape, wherein on the first end of cutter head blade is set, so the cutter head of structure is when undergoing surgery, 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 the osteotomy site of spinal bone, has increased the stability of spinal column osteotomy osteotome in the 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 that causes after having avoided spinal column osteotomy osteotome service time long has further improved the safety of using the operation of spinal column osteotomy osteotome.

Description of drawings

Fig. 1 is the spinal column profile sketch map of pathological changes state;

Fig. 2 is spinal column cross section structural representation;

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

Fig. 4 is with the spinal column profile sketch map after the spinal column use external force pressurization merging of Fig. 3;

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

Fig. 6 is this utility model spinal column osteotomy osteotome structural representation;

Fig. 7 is this utility model spinal column osteotomy osteotome user mode figure.

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 purpose of this utility model, technical scheme and advantage clearer, below in conjunction with the accompanying drawing in this utility model, technical scheme in this utility model is clearly and completely described, obviously, described embodiment is this utility model part embodiment, rather than whole embodiment.Based on the embodiment in this utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of this utility model protection.

Fig. 6 is this utility model spinal column osteotomy osteotome structural representation, and as shown in Figure 6, spinal column osteotomy osteotome of the present utility model 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 the L shape with the second end 111, and first end 112 is the L shape with knife bar 12, blade is arranged on the first end 112, and the outer rim of first end 112 is arc shaped.

This utility model is when when using spinal column osteotomy osteotome of the present utility model that spinal bone is carried out osteotomy with the purpose that cutter head 11 and knife bar 12 are designed to the L shape, 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 the osteotomy site of bone, has reduced the damage probability that spinal cord is caused; On the other hand, knife bar 12 is irritated the structure that is cast as one with handle of a knife 14, has avoided the long and loosening phenomenon that causes spinal column osteotomy osteotome service time.

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

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

It should be noted that at last: above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although with reference to previous embodiment this utility model is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of this utility model.

Claims

1. spinal column 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 the L shape with knife bar (12), and first end (112) is the L shape with the second end (111), and blade is arranged on the edge of first end (112); Knife bar (12) is irritated the structure that is cast as one with handle of a knife (14).

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