CN203852417U

CN203852417U - Pedicle screw sleeve

Info

Publication number: CN203852417U
Application number: CN201420081761.XU
Authority: CN
Inventors: 卜保献; 谢艳; 李小玲; 邹吉锋; 耿捷; 郭继锋; 李四中
Original assignee: Luoyang Orthopedic Traumatological Hospital of Henan Orthopedic Hospital
Current assignee: Luoyang Orthopedic Traumatological Hospital of Henan Orthopedic Hospital
Priority date: 2014-02-26
Filing date: 2014-02-26
Publication date: 2014-10-01
Anticipated expiration: 2024-02-26

Abstract

The utility model discloses a pedicle screw sleeve, comprising a sleeve body (1), a handle (2), view windows (3), a sleeve head bare area (4) and a sleeve head tip (5), wherein the sleeve body is of a smooth through hollow tube body structure; the handle is connected to the rear end part of the sleeve body; the view windows are formed in the tube wall of the sleeve body; one side of the front end part of the sleeve body is the sleeve head bare area; the corresponding side of the front end part of the sleeve body is the sleeve head tip. According to the pedicle screw sleeve, when a pedicle screw is implanted in the pedicle, the sleeve is sheathed on the exterior of the pedicle screw; the pedicle screw is prevented from directly touching human muscles, so that the damage to a human body is decreased; moreover, when the pedicle screw is implanted in the human body, the depth and the position of entrance thereof can be observed; therefore the safe reliability in use of the pedicle screw can be improved; both the operative wound and the damage to the human body can be decreased; the convenience and the precision in operation are enhanced.

Description

Pedicle screw sleeve

Technical field

This utility model belongs to technical field of medical instruments, specifically a kind of pedicle screw sleeve.

Background technology

Breast Yao vertebra Ji Huan ﹝ as the ﹞ such as prolapse of lumbar intervertebral disc, centrum olisthe, spinal stenosis be commonly encountered diseases and the frequently-occurring disease of spinal surgery, this normal work, the living and studying that has affected patient causes very large misery to patient disease seriously.These diseases need operative treatment more in the situation that expectant treatment is invalid, in decompression, need to rebuild spinal stability, and pedicle screw fixed system is the most widely used general apparatus that is effectively implanted in recent years.Because lower back is muscular, deeply exist, the leading menisectomy otch of Wicresoft's consciousness is narrower and small, pedicle screw tail and helicitic texture thereof can when implanting, sting frustrate in otch flourishing deeply sacrum ridge flesh, cause that seriously frustrating of muscle ruined, necrosis, cause and infect and lower back later stage pain, to patient, cause huge misery.

Summary of the invention

The purpose of this utility model produces thus, a kind of pedicle screw sleeve is proposed, the security reliability of using by can effectively improve pedicle screw in clinical use pedicle screw sleeve, reduces operation wound, the damage that reduces human body to cause, increases the convenience and the accuracy that operate.

For achieving the above object, the technical scheme that this utility model is taked is: a kind of pedicle screw sleeve, comprise that union body, handle, form, the naked vision area of casing head and casing head are most advanced and sophisticated, described union body is the hollow pipe body structure of a smooth perforation, rearward end at described union body is connected with handle, on the tube wall of described union body, have form, leading section one side of described union body is that the naked vision area of casing head, a corresponding side are that casing head is most advanced and sophisticated.

Union body described in the utility model is cylindrical, and diameter is 1.5cm.

Handle described in the utility model is that length is 13cm, and wide is the rectangle sheet metal structure of 3cm.

Form described in the utility model has two, is rectangular shape.

The naked vision area of casing head described in the utility model is positioned at before form, is U-lag opening.

Casing head described in the utility model tip is leg-of-mutton cutting-edge structure.

This utility model is at present clinical when carrying out spinal operation; pedicle screw is not because there is no external protective casing; there will be the pedicle screw tail of Operation and screw thread to twist to frustrate in otch flourishing deeply sacrum ridge flesh; cause seriously frustrating and ruin of muscle, cause the injury of infection and lower back later stage pain.By pedicle screw sleeve is set, when pedicle screw is implanted to pedicle of vertebral arch by casing pipe sleeve the outside at pedicle screw, prevented contacting of pedicle screw and human muscle, thereby reduced the injury to human body.And when pedicle screw implant into body, can observe the degree of depth that screw enters by the form pedicle screw sleeve, simultaneously can also the naked vision area of casing head from sleeve pipe observe the depth and place of pedicle screw implant into body.The handle that 13cm is long, 3cm is wide is just in time applicable to human hands to be held, handled easily.The hollow sleeve of diameter 1.5cm can make pedicle screw pass freely through very like a cork.Whole union body internal-and external diameter is smooth cylindrical, reduces on the one hand the resistance that pedicle screw passes through within it, reduces on the other hand frictions outside and other apparatuses.Two forms that are provided with can be observed the degree of depth that pedicle screw enters union body.The naked vision area of casing head being provided with can very clearly see that pedicle screw arrives the position of vertebral body, and can carry out the operation that pedicle screw is implanted vertebra.The casing head being provided with is most advanced and sophisticated.By it, can prop up vertebral body, while being convenient to perform the operation, fix the fixing point that whole pedicle screw sleeve makes to have a contact vertebra when using pedicle screw sleeve, prevent and treat whole sleeve pipe slippage.Have sturdy and durable, easy and simple to handle, reduce surgical injury, the feature such as with low cost.

Accompanying drawing explanation

Fig. 1 is the structural representation of utility model.

In figure: 1, union body, 2, handle, 3, form, 4, the naked vision area of casing head, 5, casing head is most advanced and sophisticated.

The specific embodiment

By reference to the accompanying drawings, provide embodiment of the present utility model as follows:

As shown in Figure 1: the pedicle screw sleeve described in the present embodiment comprises union body 1, handle 2, form 3, the naked vision area 4 of casing head and casing head tip 5, union body 1 is the hollow cylinder pipe structure of a smooth perforation, its diameter can be 1.5cm, this structure can reduce and extraneous friction on the one hand, on the one hand pedicle screw can freely be passed therethrough.Rearward end at union body 1 is connected with handle 2, and handle is that a length is 13cm, and wide is the rectangle sheet metal structure of 3cm, is suitable for very comfortable the holding of human hands.All can with union body 1 welding or mould one-shot forming.At union body 1, have rectangular form near anterior tube wall, the convenient pedicle screw of observing is through the degree of depth of union body.The magnitude setting of form is generally two, because one is not too beneficial to observation, and three meetings add the difficulty of producing extensively.The naked vision area 4 of described casing head is positioned at leading section one side of union body 1, be positioned at before form 3, for U-lag opening, leading section one side at union body 1 has a U-lag, can arrive from observing pedicle screw here the position of vertebral body, and can observe whole process from pedicle screw to vertebral body that implant, handled easily.The corresponding opposite side of the union body naked vision area 4 of 1 leading section casing head is casing head tip 5, this casing head most advanced and sophisticated 5 is leg-of-mutton cutting-edge structure, and its tip can prop up vertebral body, for whole sleeve pipe provides an impetus, prevent and treat whole sleeve pipe slippage, be convenient to operation technique.

During use, hold handle 2, make union body 1 casing head tip 5 prop up spinal column, then pedicle screw is put into union body, through whole union body, from form 3, observe the degree of depth of pedicle screw sleeve pipe, when pedicle screw arrives vertebral body, by the naked vision area 4 of casing head, observe and instruct pedicle screw is implanted to vertebral body, increasing the accuracy of operation.

Claims

1. a pedicle screw sleeve, it is characterized in that: comprise union body (1), handle (2), form (3), the naked vision area of casing head (4) and casing head most advanced and sophisticated (5), described union body (1) is the hollow pipe body structure of a smooth perforation, rearward end at described union body (1) is connected with handle (2), on the tube wall of described union body (1), have form (3), leading section one side of described union body (1) is that the naked vision area of casing head (4), a corresponding side are casing head most advanced and sophisticated (5).

2. pedicle screw sleeve according to claim 1, is characterized in that: described union body (1) is for cylindrical, and diameter is 1.5cm.

3. pedicle screw sleeve according to claim 1, is characterized in that: described handle (2) is that length is 13cm, and wide is the rectangle sheet metal structure of 3cm.

4. pedicle screw sleeve according to claim 1, is characterized in that: described form (3) has two, is rectangular shape.

5. pedicle screw sleeve according to claim 1, is characterized in that: the naked vision area of described casing head (4) is positioned at form (3) above, is U-lag opening.

6. pedicle screw sleeve according to claim 1, is characterized in that: described casing head most advanced and sophisticated (5) is leg-of-mutton cutting-edge structure.