CN101283920A - Abnormal undercut osteotome with bifurcated frontend - Google Patents
Abnormal undercut osteotome with bifurcated frontend Download PDFInfo
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- CN101283920A CN101283920A CNA2008100941298A CN200810094129A CN101283920A CN 101283920 A CN101283920 A CN 101283920A CN A2008100941298 A CNA2008100941298 A CN A2008100941298A CN 200810094129 A CN200810094129 A CN 200810094129A CN 101283920 A CN101283920 A CN 101283920A
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- osteotome
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- blade
- shaped incision
- end bifurcated
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Abstract
The invention discloses a special-shaped bone knife with a branched front end, which comprises a first portion for bearing hammer impact, a second portion for holding, and a fourth portion including a blade and extending forwards to form an obtuse angle with the second portion for holding. The bone knife is characterized in that the bone knife also has a third portion connected with the fourth portion and extending along a direction substantially vertical to the blade; and the third portion has a side plane for restricting lateral movement of the second portion at a position closest to the blade. The special-shaped bone knife with the branched front end can be used in operations for cutting the vertebral body or other structures in front of spinal cord by rear route to make the operations safer and more effective.
Description
Technical field
The present invention relates to be used for the deep cutter that bone surgery is used, particularly a kind of special-shaped incision osteotome of front end bifurcated.
Background technology
When relating to the surgical operation of skeletal tissue, often need to use osteotome to come hard skeletal tissue cut a hole and cut operation.By different requirements of operation, skeletal tissue's cutter need be cut into certain shape, or get the bone piece of definite shape, or cut a part of osseous tissue by certain shape need from the skeleton cutter.At the skeletal tissue of different parts and different bone surgery requirements, needing the osteotome of difformity and size, to satisfy different operations required.
The most frequently used osteotome is straight shape osteotome, and the bone surgery that can satisfy the overwhelming majority is required.Yet along with the raising of surgical technic, progressively break some operation forbidden zone in the past, and straight shape osteotome commonly used has seemed that in some new bone surgery to be difficult to satisfy operation required.
In the spinal operation of orthopaedics, spinal cord is very tender and lovely, and the doctor need be protected especially in operation.With existing straight shape osteotome, spinal cord is touched in careless slightly meeting in the operation, the paralysis that can cause two lower limb of spinal cord injury and secondary to be difficult to recover.
Occur at thoracic vertebra ossification of posterior longitudinal ligament, vertebral body trailing edge that hypertrophy bony spur, thoracic disc are outstanding, when tumor appears in bursting fracture of vertebral body and vertebral body, spinal cord can be subjected to above-mentioned causing and press the compressing of thing to cause lower extremity paralysis, need excise the above-mentioned pressure thing that causes that is positioned at spinal cord the place ahead during operation, to remove the compressing that spinal cord is subjected to.As selecting operation through posterior approach, because blocking of very tender and lovely spinal cord, use common straight shape osteotome forwards to cut most osseous tissue from the both sides of spinal cord, and a fritter vertebral body osseous tissue of spinal cord dead ahead often is difficult to cut fully, causes spinal cord can not remove the compressing that is subjected to completely effectively.So the doctor who has selects to reach the purpose of removing spinal compression from the vertebral body of side anterior lateral cervical approach excision thoracic vertebra ossification of posterior longitudinal ligament piece or fracture, but the operation of side anterior lateral cervical approach need be opened breast, increase operation wound, increase the complication and the operation risk of operation back heart and pulmonary; And, though side anterior lateral cervical approach operation can cut a fritter vertebral body osseous tissue of spinal cord dead ahead, be difficult to fully for the decompression of offside.
Because ordinary straight shape osteotome is for the above-mentioned weak point of vertebra posterior approach operation, someone has designed front end is the osteotome of arc or bending shape, and hope can walk around that spinal cord cutter cuts that the ossification of posterior longitudinal ligament piece in spinal cord the place ahead, hypertrophy bony spur, intercalated disc are outstanding, sclerite and tumor tissues.But when using this front end to cut hard osseous tissue as the osteotome cutter of arc or bending shape, this osteotome is easy to slide to both direction.As sliding, then can not effectively cut a hole the osseous tissue that is essential and cuts to the opposite direction of spinal cord; Slide as myelopetal direction, then may oppress, impact tender and lovely spinal cord, the paralysis that causes two lower limb of very serious spinal cord injury and secondary to be difficult to recover.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of special-shaped incision osteotome of front end bifurcated, be applicable to the vertebral body osseous tissue that cuts the spinal cord dead ahead from the rear approach fully, and be difficult for Spinal Cord.
Special-shaped incision osteotome according to front end bifurcated of the present invention, described osteotome comprises a first that is subjected to hammering, a second portion that is used to grip, with the 4th part that becomes the obtuse angle to extend forward with the second portion that is used to grip to contain blade, it is characterized in that also having one to be connected with the 4th part, along the third part of extending perpendicular to the blade direction haply, described third part has one to be used to limit the side that second portion laterally moves the most nearby at the distance blade, this side is a plane, and with the blade approximate vertical.
Special-shaped incision osteotome according to front end bifurcated of the present invention, hammer force conducts to third part and the 4th part by the first and the second portion of osteotome of the present invention, resolve into respectively along third part direction and tetrameric two component, because the lateral resistance shelves of third part effect, with the cutter shear force that guarantees osteotome by its 4th part exactly downwards cutter cut, prevent that osteotome from producing slip forwards along the effect of hammering strength.
When using according to the special-shaped incision osteotome of front end bifurcated of the present invention, for example, employing is carried out operation on vertebra through the operation approach of the way of escape, cut the ossification of posterior longitudinal ligament piece that is positioned at spinal cord the place ahead, the outgrowth bony spur of vertebral body trailing edge, outstanding intervertebral disc, when the sclerite of compressing spinal cord or the tumor tissues of vertebral body, the hammer force that cutter is cut conducts to third part and the 4th part simultaneously along the first and the second portion of the special-shaped incision osteotome of front end bifurcated of the present invention, because osseous tissue is close in the side of third part, play barrier effect, can guarantee to cut a hole shear force by its 4th part exactly downwards cutter cut, the second portion that prevents osteotome produces the compressing that causes to the slip of spinal cord direction tender and lovely spinal cord along the effect of hammer force, impact and corresponding damage.Owing to use the second portion of the special-shaped incision osteotome of front end bifurcated of the present invention to be connected at a certain angle with third part, make the hammering direction towards the spinal cord direction, thereby the second portion of osteotome of the present invention also is unlikely to slide the efficient that has guaranteed to cut a hole deep tissue to the spinal cord rightabout.
Description of drawings
Above-mentioned purpose of the present invention and other purpose and advantage thereof will be more readily apparent from by the detailed description below in conjunction with the accompanying drawing illustrated embodiment, and accompanying drawing has:
Fig. 1 is the special-shaped incision osteotome structural representation of front end bifurcated of the present invention;
Fig. 2 is the side view of Fig. 1.
Preferred forms
Referring now to the special-shaped incision osteotome of Fig. 1 and Fig. 2 explanation according to front end bifurcated of the present invention, comprise a first 1 that is subjected to hammering, be the part of bone hammer hammering, its crown center can indicate "+" labelling or " zero " labelling of indication hammering position.The lower end that is subjected to the first 1 of hammering is to be used for the patient is used to grip deep cutter at operation process second portion 2, its profile is straight shape, and is tapered downwards along axis, and it can be a tapering, perhaps by the combination of two different taperings, its shape of cross section is circular.Described straight shape also can be the polygonal pyramid shape that has gradient along axis downwards, as the rhizoma sparganic taper, and rectangular pyramid shape or hexagonal pyramid shape.Second portion also can be bent at least one arc or broken line shape or its combination.Direction extends in obtuse angle at the lower end of second portion 2 and axis direction is the 4th part 4 that contains blade, and wherein, described blade can be straight, circular arc, broken line shape, or its combination.One is connected with the 4th part, along limiting the third part 3 that second portion laterally moves perpendicular to blade direction being used to of extending haply, because the lateral resistance shelves of this part act on, can prevent that second portion from laterally clashing into the extruding spinal cord.The shape of third part is that its side is a planar cylinder, and its cross section can be a triangle, rectangle, or square, also can be to cut out a planar cylinder vertically.
The applicant has made detailed description to design of the present invention and embodiment at this; those skilled in the art on this basis can various conversion and improvement; but these conversion and improve and all not break away from spirit of the present invention, all protection scope of the present invention it.
Claims (6)
1. the special-shaped incision osteotome of a front end bifurcated, it is characterized in that described osteotome comprises a first that is subjected to hammering, a second portion that is used to grip, with the 4th part that becomes the obtuse angle to extend forward with the second portion that is used to grip to contain blade, it is characterized in that also having one to be connected with the 4th part, along the third part of extending perpendicular to the blade direction haply, described third part has one to be used to limit the side that second portion laterally moves the most nearby at the distance blade, and this side is a plane.
2. according to the special-shaped incision osteotome of the described front end bifurcated of claim 1, it is characterized in that the second portion profile of described osteotome is straight shape, or curve at least one arc or broken line shape, or their combination.
3. according to the special-shaped incision osteotome of the described front end bifurcated of claim 1, the profile that it is characterized in that the second portion of described osteotome is straight, is tapered downwards along axis, and it can be a tapering, perhaps by the combination of two different taperings, cross sectional shape can be circular.
4. according to the special-shaped incision osteotome of the described front end bifurcated of claim 1, the profile that it is characterized in that the second portion of described osteotome is straight, is the polygonal pyramid shape that has gradient along axis downwards.
5. according to the special-shaped incision osteotome of the described front end bifurcated of claim 1, blade can be straight, circular arc, broken line shape, or its combination.
6. according to the special-shaped incision osteotome of the described front end bifurcated of claim 1, the shape that it is characterized in that third part is that its side is a planar cylinder, and its cross section can be triangle vertically, rectangle, or square, also can be to cut out a planar cylinder vertically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100941298A CN100571644C (en) | 2008-05-05 | 2008-05-05 | The special-shaped incision osteotome of front end bifurcated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100941298A CN100571644C (en) | 2008-05-05 | 2008-05-05 | The special-shaped incision osteotome of front end bifurcated |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101283920A true CN101283920A (en) | 2008-10-15 |
| CN100571644C CN100571644C (en) | 2009-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2008100941298A Expired - Fee Related CN100571644C (en) | 2008-05-05 | 2008-05-05 | The special-shaped incision osteotome of front end bifurcated |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103948416A (en) * | 2014-05-07 | 2014-07-30 | 孙翊夫 | L-shaped osteotome device |
| CN104027159A (en) * | 2013-03-04 | 2014-09-10 | 中国人民解放军第二军医大学 | Posterior longitudinal ligment ossification forwards-floating device |
| CN104083191A (en) * | 2013-04-01 | 2014-10-08 | 陶惠人 | Spine osteotomy bone knife |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT407826B (en) * | 2000-02-25 | 2001-06-25 | Jesch Wolfgang Dr | Device with a bone reamer |
| CN2415730Y (en) * | 2000-04-13 | 2001-01-24 | 魏海温 | Arc spade type osteotome |
| DE10202861C1 (en) * | 2002-01-24 | 2003-09-11 | Schmid & Wezel Gmbh & Co | Knife for chop cutter and device for peeling off a chop strand |
| CN2654045Y (en) * | 2003-10-24 | 2004-11-10 | 天津市第四中心医院 | Medical vertebral plate limiting scalper |
| JP4748777B2 (en) * | 2005-06-21 | 2011-08-17 | 食肉生産技術研究組合 | Cutting tool for bone separation of meat with bone and cutting method |
-
2008
- 2008-05-05 CN CNB2008100941298A patent/CN100571644C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104027159A (en) * | 2013-03-04 | 2014-09-10 | 中国人民解放军第二军医大学 | Posterior longitudinal ligment ossification forwards-floating device |
| CN104083191A (en) * | 2013-04-01 | 2014-10-08 | 陶惠人 | Spine osteotomy bone knife |
| CN103948416A (en) * | 2014-05-07 | 2014-07-30 | 孙翊夫 | L-shaped osteotome device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100571644C (en) | 2009-12-23 |
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Granted publication date: 20091223 Termination date: 20140505 |