CN201168008Y - Bone knife for cutting vertebral pedicle - Google Patents

Abstract

The utility model provides a kind of bone knife for cutting vertebral pedicle, in truncated cone-shaped knife tail connect knife handle, knife handle in " " shape, the front end of knife handle is connected with cutter head, the vertical setting in front end of cutter head and knife handle integral planar, has blade on cutter head, the arc-shaped overshooting shape in the end of the cutter head on the outside of blade or hemispherical or mushroom head. The blade is in concave arc shape; The knife handle lower end is connect with cutter head by being bent in an arc shape. For in full vertebra en bloc resection operation, to there is the advantages that easy and safe to operate in art, shortening operating time, intraoperative hemorrhage is few.

Description

A kind of pedicle of vertebral arch osteotomy osteotome

Technical field:

This utility model relates to the bone surgery medical apparatus and instruments, relates in particular to a kind of pedicle of vertebral arch osteotomy osteotome.

Background technology:

At present, orthopaedics employed osteotome when getting operation such as bone, callus eradication, bone wart is straight formula structure, and is very inconvenient when running into excision such as soft tissue is thick, the callus of otch depths, chondroma, wastes time and energy, both influence surgical effect, increased patient's misery again.In full vertebra en bloc resection operation, generally need the pedicle osteotomy, and with the vertebra excision that is divided in two parts, because when the way of escape appeared, the vertebral arch location of root existed relatively deeply, present various osteotomes, no matter be straight shape osteotome or existing various arcs field formula osteotome, all be difficult to from the way of escape the horizontal osteotomy of pedicle of vertebral arch row, be easy to during osteotomy the pedicle outside oblique down in the side, and squeeze into vertebral body, effectively osteotomy; In addition, the pedicle of vertebral arch inwall is pressed close to spinal dura mater and spinal cord, when in a single day osteotome breaks through inwall, very easily damages inboard spinal cord, and is wayward; And, operation inconvenience, length consuming time, intraoperative hemorrhage is many etc.

Summary of the invention:

The purpose of this utility model provide a kind of can be effectively to the horizontal osteotomy of pedicle of vertebral arch row, and easy for operation, thus reduce the pedicle of vertebral arch osteotomy osteotome of operating time and intraoperative hemorrhage.

The purpose of this utility model can realize by following technical measures:

The cutter WEILIAN that is truncated cone-shaped connects handle of a knife, and handle of a knife is

Shape, the front end of handle of a knife is connected with cutter head, and the vertical setting of leading section of cutter head and handle of a knife integral planar has blade on the cutter head, be positioned at the terminal curved overshooting shape or the hemispherical or mushroom head of the cutter head in the blade outside.

The purpose of this utility model also can realize by following technical measures:

Described blade is arcs of recesses; Described handle of a knife lower end is connected by the arc bending with cutter head.

This utility model is to adopt stainless steel material to be made as the osteotome of one, and the epimere of handle of a knife can be down the shape that the multiple doctors of convenience such as eight pyramids or twist shape hold, and the hypomere cross sectional shape of handle of a knife can be circular or oblate.

Cutter head of the present utility model is positioned at the terminal of handle of a knife and is vertical with the handle of a knife integral planar, i.e. " L " shape, and the end that is positioned at the cutter head in the blade outside is arc-shaped protrusions shape or hemispherical or mushroom head.Can easily cutter head be inserted intervertebral foramina, the blade that links to each other with end can be guaranteed the effective osteotomy of pedicle of vertebral arch row level, and the not spinal dura mater and the spinal cord of easy damaged inboard when making osteotomy, operation technique is controlled easily, knife edge part is arcs of recesses slightly, thereby guarantees to stablize the complete disposable pedicle of vertebral arch of blocking; The next processus transversus vertebrarum stops that to the osteotome handle of a knife itself is designed to shank portion again when avoiding osteotomy Shape, thus make shank portion cross the next processus transversus vertebrarum top just, make things convenient for osteotomy; Easy and safe to operate in the art, time saving and energy saving, intraoperative hemorrhage is few.

Description of drawings:

Fig. 1 is the sketch map of this utility model embodiment;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the cutaway view that A-A amplifies among Fig. 2.

The specific embodiment

This pedicle of vertebral arch osteotomy osteotome, the cutter tail 1 that is truncated cone-shaped connects handle of a knife 2, and handle of a knife 2 is Shape, the epimere of handle of a knife 2 is for falling eight pyramids, and the hypomere cross sectional shape of handle of a knife 2 is circular, the leading section of handle of a knife 2 integral planar is vertical cutter head 3, the blade 4 that is arcs of recesses is arranged on the cutter head 3, and cutter head terminal 5 is a hemispherical, and handle of a knife 2 lower ends are connected by the arc bending with cutter head 3.

Claims (3)

1, a kind of pedicle of vertebral arch osteotomy osteotome, the cutter tail (1) that is truncated cone-shaped connects handle of a knife (2), it is characterized in that handle of a knife (2) is Shape, the front end of handle of a knife (2) is connected with cutter head (3), and the vertical setting of leading section of cutter head (3) and handle of a knife (2) integral planar has blade (4) on the cutter head (3), be positioned at the terminal curved overshooting shape or the hemispherical or mushroom head of the cutter head (3) in blade (4) outside.

2, a kind of pedicle of vertebral arch osteotomy osteotome according to claim 1 is characterized in that described blade (4) is arcs of recesses.

3, a kind of pedicle of vertebral arch osteotomy osteotome according to claim 1 is characterized in that described handle of a knife (2) lower end is connected by the arc bending with cutter head (3).

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