CN208435782U - Micro-wound percutaneous pedicle screw collinearly sets nail guider - Google Patents

Abstract

The utility model relates to micro-wound percutaneous pedicle screws collinearly to set nail guider, it includes guider, guider includes whole guider main body cylindrical, guider main body is provided with perforative puncture pilot hole along the axle center of guider main body, and one end of guider is provided with guider bayonet and erecting bed.The utility model may insure that the U-lag of more pieces of pedicle screws is in same straight line；It no longer needs to take out with canula puncture needle, so that it may directly extract guider out from subdermal muscle tunnel by setting stick device, not influence the operating procedure after centrum punctures, effectively prevent needing the generation for finding puncturing hole difficulty again after exiting puncture needle.

Description

Micro-wound percutaneous pedicle screw collinearly sets nail guider

Technical field

The utility model relates to micro-wound percutaneous pedicle screws collinearly to set nail guider.

Background technique

Micro-wound percutaneous pedicle screw technique for fixing is for treating the more advanced method of one kind of thoracolumbar fracture, mesh It is preceding to be gradually applied to spinal surgery.

But in actual operation operation, since pedicle screw is percutaneously to be placed in, it cannot be directly viewed pedicle screw Position, can only observe, adjust the position of pedicle screw by modes such as x-ray fluoroscopies；Therefore, make more pieces of pedicle screws The operation that U-lag is on same straight line [same straight line when vertical view] fully relies on the experience and feeling of operator, nothing Method ensures that the U-lag of more pieces of pedicle screws is in same straight line, requires a great deal of time and is adjusted.If more pieces of vertebras The U-lag of pedicle screw is in same straight line, then part pedicle screw needs to select the pedicle screw for having gimbal function, but The mechanical strength of Universal pedicle screw is relatively weak, is easy to cause the reduction of the fracture is not good enough, later period height is lost etc..

Utility model content

To solve the above problems, the purpose of this utility model is to provide micro-wound percutaneous pedicle screws collinearly to set nail guiding Device, it can be ensured that the U-lag of more pieces of pedicle screws is in same straight line.

The detailed technology scheme that the utility model is taken are as follows: micro-wound percutaneous pedicle screw collinearly sets nail guider, packet Guider is included, guider includes whole guider main body cylindrical, and guider main body is arranged along the axle center of guider main body There is perforative puncture pilot hole, one end of guider is provided with guider bayonet and erecting bed.

Preferably, the diameter of guider main body is 5.5mm, and the width for puncturing pilot hole is 3.0mm.

Diameter 3.0mm is most-often used specification with canula puncture needle 5, and it is suitable for 3.0mm to puncture the width of pilot hole 12 With the band canula puncture needle 5 of diameter 3.0mm.

Further, pilot hole is punctured to extend to and extraneous connection to the other end of guider.

It no longer needs to take out with canula puncture needle, so that it may directly take out guider from subdermal muscle tunnel by setting stick device Out, it is easily installed the further operating of seal wire, tapping, merging screw etc..

Further, the other end of guider is provided with the guider head end of cone.

When using setting stick device for guider insertion subdermal muscle tunnel, guider head end can play guiding role, be convenient for Guider is passed through into U-lag.

Compared with prior art, the utility model has the following beneficial effects: 1, may insure the U of more pieces of pedicle screws Shape slot is in same straight line；2, it no longer needs to take out band canula puncture needle, so that it may by setting stick device for guider from subcutaneous flesh Meat tunnel is directly extracted out, is not influenced the operating procedure after centrum punctures, is effectively prevent needing to find puncture again after exiting puncture needle The generation of hole difficulty.

Detailed description of the invention

Fig. 1 is that the micro-wound percutaneous pedicle screw of embodiment one collinearly sets the stereoscopic schematic diagram of nail guider.

Fig. 2 is that the micro-wound percutaneous pedicle screw of embodiment one collinearly sets the schematic top plan view of nail guider.

Fig. 3 is that the micro-wound percutaneous pedicle screw of embodiment one collinearly sets stereoscopic schematic diagram when nail guider uses.Fig. 3 In, the direction with canula puncture needle 5 is first inserted into heavy solid line arrows expression, after the expression band extraction of canula puncture needle 5 of thick dashed line arrow, When edge punctures the screw-in pedicle screw 2 of hole left by centrum/skin with canula puncture needle 5, the mobile side of pedicle screw 2 To.

Fig. 4 is that the micro-wound percutaneous pedicle screw of embodiment one collinearly sets schematic side view when nail guider uses.Fig. 4 In, heavy solid line arrows indicate that moving direction when 1 insertion of guider/taking-up, heavy line indicate guider 1 in subdermal muscle tunnel Imaginary positions when 41.

Fig. 5 is that the micro-wound percutaneous pedicle screw of embodiment three collinearly sets the schematic top plan view of nail guider.

Guider 1；Guider main body 11；Puncture pilot hole 12；Middle bit identification 121；Guider head end 13；Guider bayonet 14；Erecting bed 141；Pedicle screw 2；U-type groove 21；Tail sleeve 22；Centrum 3；Head end centrum 31；Middle intercentrum 32；Tail end centrum 33；Skin 4；Subdermal muscle tunnel 41；Band canula puncture needle 5；Hold-down bars 6.

Specific embodiment

Embodiment one, the present embodiment are that a kind of micro-wound percutaneous pedicle screw collinearly sets nail guider.

Fig. 1-Fig. 4 is please referred to, the utility model is that micro-wound percutaneous pedicle screw collinearly sets nail guider comprising guiding Device 1, guider 1 include whole guider main body 11 cylindrical, and guider main body 11 is set along the axle center of guider main body 11 It is equipped with perforative puncture pilot hole 12.Guider 1 is usually that medical stainless steel is made.

One end of guider 1 is provided with guider bayonet 14 and erecting bed 141.

Preferably, the diameter of guider main body 11 is 5.5mm, and the width for puncturing pilot hole 12 is 3.0mm.Diameter The 111806100 type puncture needles with canula puncture needle 5[Xiamen Double Engine Medical Material Co., Ltd. of 3.0mm] it is most often to make Specification punctures the band canula puncture needle 5 that the width of pilot hole 12 is 3.0mm application diameter 3.0mm.

The micro-wound percutaneous pedicle screw of the present embodiment collinearly sets the working principle of nail guider are as follows: before use, routinely Operation method [i.e. after 4 upper opening of skin, by pedicle screw 2 screw in centrum 3], in head end centrum 31, tail end centrum 33 On be respectively implanted a pedicle screw 2.

In use, the guider bayonet 14 of guider 1 and erecting bed 141 are caught in set stick device [conventional sets stick device, than As 111802300 types of Xiamen Double Engine Medical Material Co., Ltd. set stick device], and use sets stick device and is inserted into guider 1 Subdermal muscle tunnel 41 makes guider 1 pass through the vertebral arch of the U-type groove 21 of the pedicle screw 2 of head end centrum 31, tail end centrum 33 The U-type groove 21 of root screw 2, and puncture the vertebral arch that pilot hole 12 is located at the pedicle screw 2 of head end centrum 31, tail end centrum 33 Between root screw 2；At this point, at this point, the central axes of the pilot hole 12 of guider 1 and the pedicle screw 2 of head end centrum 31 it is U-shaped 21 axle center of slot, tail end centrum 33 pedicle screw 2 21 axle center of U-type groove between straight line be overlapped [being overlapped when vertical view].

Then by the 111806100 type puncture needles with canula puncture needle 5[Xiamen Double Engine Medical Material Co., Ltd.] Through skin 4 from the pilot hole of guider 1 between the pedicle screw 2 of head end centrum 31, the pedicle screw 2 of tail end centrum 33 12 penetrate the middle part of centrum 32, at this point, with canula puncture needle 5 be located at the pedicle screw 2 of head end centrum 31 21 axle center of U-type groove, On straight line between 21 axle center of U-type groove of the pedicle screw 2 of tail end centrum 33, punctures guiding and complete, will be led by setting stick device It is extracted out to device 1 from subdermal muscle tunnel 41, by hole of the third pedicle screw 2 on skin 4, [band canula puncture needle 5 is worn Pierce hole left by centrum/skin] screw in intercentrum 32 and screw-in depth is adjusted by perspective, until three pedicle of vertebral arch screw Follow closely the pedicle screw 2 of 2[head end centrum 31, the pedicle screw 2 of middle intercentrum 32, tail end centrum 33 pedicle screw 2] U-type groove 21 be located in a straight line, can be used at this time and set stick device hold-down bars 6 is inserted into subdermal muscle tunnel 41 and fixed Stick 6 can pass through pedicle screw 2, the middle intercentrum of the pedicle screw 2[head end centrum 31 that three are located along the same line 32 pedicle screw 2, tail end centrum 33 pedicle screw 2] U-type groove 21.

If the quantity of middle intercentrum 32 is two or more, operating method is same as described above, to save space, with Under repeat no more.

From the above, it is seen that the micro-wound percutaneous pedicle screw of the present embodiment collinearly sets nail guider, it can be ensured that more The U-lag 21 of piece pedicle screw 2 is in same straight line.

Further, the other end of guider 1 is provided with the guider head end 13 of cone.Using setting stick device for guider When 1 insertion subdermal muscle tunnel 41, guider head end 13 can play guiding role, convenient for guider 1 is passed through U-lag 21.

Embodiment two, the present embodiment are that a kind of micro-wound percutaneous pedicle screw collinearly sets nail guider.

Referring to Fig. 5, the present embodiment and embodiment one the difference is that puncture pilot hole 12, puncture pilot hole 12 to The other end of guider 1 extends to and extraneous connection.Band canula puncture needle 5 can be made to pass through puncture pilot hole 12, screw-in intermediate It behind the middle part of centrum 32, no longer needs to take out band canula puncture needle 5, so that it may by setting stick device for guider 1 from subdermal muscle tunnel Road 41 is directly extracted out, retains former puncture position convenient for band canula puncture needle 5, is led by the puncturing hole installation with canula puncture needle 5 Silk and subsequent operation.

It is to be appreciated that term " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", "vertical", " water It is flat ", "top", "bottom", "inner", the instructions such as "outside" orientation or positional relationship be to be based on the orientation or positional relationship shown in the drawings, It is only the present invention and simplified description for ease of description, rather than indicating or imply signified device or element must have specifically Orientation is constructed and is operated for specific orientation, thus should not be understood as the limitation to present invention protection content.

Above specific embodiment is only the preferred embodiment of this creation, all in this wound not to limit this creation Any modification, equivalent substitution, improvement and etc. done within the spirit and principle of work, should be included in this creation protection scope it It is interior.

Claims (4)

1. micro-wound percutaneous pedicle screw collinearly sets nail guider, it is characterised in that: including guider (1), guider (1) includes Whole guider main body (11) cylindrical, guider main body (11) is provided with perforative along the axle center of guider main body (11) It punctures pilot hole (12), one end of guider (1) is provided with guider bayonet (14) and erecting bed (141).

2. micro-wound percutaneous pedicle screw as described in claim 1 collinearly sets nail guider, it is characterised in that: guider main body (11) diameter is 5.5mm, and the width for puncturing pilot hole (12) is 3.0mm.

3. micro-wound percutaneous pedicle screw as described in claim 1 collinearly sets nail guider, it is characterised in that: puncture pilot hole (12) it is extended to and extraneous connection to the other end of guider (1).

4. micro-wound percutaneous pedicle screw a method according to any one of claims 1-3 collinearly sets nail guider, it is characterised in that: guiding The other end of device (1) is provided with the guider head end (13) of cone.