A kind of grasping device for TLIF operationsTechnical field
The present invention relates to surgical medical equipment field, specifically a kind of grasping devices for TLIF operations.
Background technology
In recent years, the incidence of degenerative diseases of lumbar vertebrae is gradually increasing, caused by regression lumbar instability, need to melt between row centrumThe patient of conjunction increases year by year, and intervertebral fusion refers to two or more vertebral fusions together, currently used for centrumBetween the art formula that merges mainly have anterior intervertebral fusion device art（ALIF）, way of escape interbody fusion（PLIF）With transforaminal approach vertebraBetween fusion（TLIF）, wherein TLIF technologies are a kind of newer methods, have wound small, and fusion rate is high, meet backbone biologyThe features such as mechanics, gradually occupies leading position in interbody fusion cage field.
Difficult point in TLIF surgical procedures is how to realize rotation of the implantation material in human body, enables implantation material smoothReach correct position.There are two types of currently used grasping devices, and one kind is simple in structure, but cannot make implantation material in human body inward turningTurn, a kind of rotation for being that by implantation material in human body, but complicated, it is cumbersome.
Invention content
The invention aims to overcome above-mentioned the deficiencies in the prior art, a kind of grasping for TLIF operations is providedDevice is a kind of simple in structure, grasping device that implantation material can be made to rotate in vivo.
The technical solution adopted in the present invention is：It is a kind of for TLIF operation grasping device by sleeve, positioning pin, jackscrew,Handwheel, interior bar, casing and handle composition are locked, sleeve is provided with locking handwheel installation set, and locking handwheel is mounted on locking handwheelIn installation set, casing part is equipped with handle, in casing insertion sleeve, and is fixed with laser welding；After interior bar plug-in-sleeve withLocking handwheel is connected firmly with jackscrew；The handle welds together with casing；Positioning pin and sleeve connection, rotate clockwiseInterior bar is connected by locking handwheel with implantation material, reach when implantation material needed for position after, rotation locking handwheel counterclockwise, when interior bar andImplantation material be detached from after, be lifted up locking handwheel, counterclockwise rotate, be allowed to positioning pin connection, with bone hammer gently tap set withRealize the rotation of implantation material.
The positioning pin is helicitic texture, and locking handwheel can screw in.
The bushing head is arc-shaped structure, is provided with arc surface, have in arc surface it is raised at two, can be with implantationObject coordinates, and implantation material is positioned.
The interior bar is helicitic texture, can be connect with implantation material.
After the locking handwheel and positioning pin connection, implantation material can rotate on casing.
The present invention rotates clockwise locking handwheel when using, and interior bar is attached by screw thread with implantation material, locked, so as toEnsure that implantation material be bonded with the arc surface of casing and positioned with protrusion at two, implantation material is implanted into human body, rotation counterclockwiseHandwheel is locked, the connection of release interior bar and implantation material is lifted up locking handwheel, rotates counterclockwise, is allowed to positioning pin connection,Set is gently tapped with bone hammer, is bonded with the arc surface of implantation material to realize the rotation of implantation material by tool.The present invention uses behaviourMake simply, to realize the rotation of implantation material in vivo.
Against existing technologies, the positive effect of the present invention is：Grasping device is connect or is detached from implantation material by screw thread, operationIt is convenient, by locking handwheel and positioning pin connection after disengaging, the rotation of implantation material is realized by tapping sleeve.The present invention is suitable forTLIF performs the operation, and meets implantation material the needs of rotating in vivo in its surgical procedure.
Description of the drawings
Below with reference to attached drawing, the present invention is further described：
Fig. 1 is a kind of grasping device dimensional structure diagram for TLIF operations；
Fig. 2 is partial enlarged view at a kind of A of grasping devices for TLIF operations of Fig. 1;
Fig. 3 is a kind of sleeve structure schematic diagram of the grasping device for TLIF operations;
Fig. 4 is a kind of tube-in-tube structure schematic diagram of the grasping device for TLIF operations;
Fig. 5 is a kind of interior bar structure diagram of the grasping device for TLIF operations;
Fig. 6 is a kind of locking hand wheel structure schematic diagram of the grasping device for TLIF operations.
In attached drawing marked as：1st, sleeve, 2, positioning pin, 3, jackscrew, 4, locking handwheel, 5, casing, 6, interior bar, 7, handHandle, 8, locking handwheel installation set, 5-1, protrusion, 5-2, arc surface.
Specific embodiment
The core of the present invention is to provide a kind of grasping device for TLIF operations, which can effectively grasp implantationObject, and after implantation material reaches certain position, pass through the rotation that implantation material is realized in percussion.
In order to which those skilled in the art is made to more fully understand the present invention program, below in conjunction with the accompanying drawings 1~6 and specific implementationThe present invention is described in further detail for mode.
A kind of grasping device for TLIF operations is by sleeve 1, positioning pin 2, jackscrew 3, locking handwheel 4, interior bar 6,5 and of casingHandle 7 forms, and sleeve 1 is provided with locking handwheel installation set 8, and locking handwheel 4 is mounted in locking handwheel installation set 8, under casing 5Portion is equipped with handle 7, in 5 insertion sleeve 1 of casing, and is fixed with laser welding；It is used after 6 plug-in-sleeve 5 of interior bar with locking handwheel 4Jackscrew 3 is connected firmly；The handle 7 welds together with casing 5；Positioning pin 2 is connect with sleeve 1, rotates clockwise lockingInterior bar 6 is connected by handwheel 4 with implantation material, when implantation material reach needed for position after, counterclockwise rotation locking handwheel 4, when interior bar 6 withAfter implantation material is detached from, locking handwheel 4 is lifted up, is rotated counterclockwise, is allowed to connect with positioning pin 2, set 1 is gently tapped with bone hammerTo realize the rotation of implantation material.
The positioning pin 2 is helicitic texture, and locking locking handwheel 4 can screw in.
5 head of casing is arc-shaped structure, is provided with arc surface 5-2, has protrusion 5- at two in arc surface 5-21, it can coordinate with implantation material, and implantation material is positioned.There is a step in 5 tail portion of casing, in step part energy insertion sleeve, casingCenter is through-hole, and interior bar 6 can be allowed to pass through.
6 front end of interior bar is helicitic texture 6-1, can be connect with implantation material.6 rear portion of interior bar is six side 6-2, can be inserted intoIt locks in handwheel, there is a platform 6-3 among six sides, can be matched with jackscrew 3.
4 center of locking handwheel is six side 4-1, can be inserted into interior bar, and there is a threaded hole 4-2 in side, can be packed into jackscrew,Screw thread is arranged at top, can be connect with positioning pin 2, is positioned for locking handwheel 4.
The jackscrew 3 is helicitic texture, and there are one interior hexagonal holes on jackscrew head.
There is a circular groove in 7 upper end of handle, matches with sleeve 1.
After the locking handwheel 4 is connect with positioning pin 2, implantation material can rotate on casing 5.
The setting of sleeve 1 is there are one through-hole, and there are one threaded hole and steps for 1 end of sleeve；Positioning pin main body is screw threadStructure is connected through a screw thread mounted on the rear end of set, and is exposed, and exposed portion can be connect with locking handwheel.
Embodiment：
As shown in Figure 1, in a kind of specific embodiment, the present invention provides it is a kind of for TLIF operation grasping device,It is made of sleeve 1, positioning pin 2, jackscrew 3, locking handwheel 4, casing 5, interior bar 6, handle 7, protrusion 5-1 and arc surface 5-2.
It such as attached drawing 1,2, shown in 3, is implanted into during Invasive lumbar fusion device, rotates clockwise locking handwheel 4, make interior bar 6 with plantingEnter object to be attached, lock by screw thread, so as to ensure that implantation material tail portion arc surface is bonded and uses with the arc surface 5-2 of casing 5Protrusion 5-1 is positioned at two, prevents implantation material from rotating, and is connect using sliding hammer with the tail portion of set 1, is slided sliding hammer and beat implantation materialEnter human body, to after required position, rotation locking handwheel 4, unclamps interior bar 6 and the connection of implantation material, be lifted up locking counterclockwiseHandwheel 4 rotates, is allowed to connect with positioning pin 2 counterclockwise, and set 1 is gently tapped with bone hammer makes implantation material tail portion arc surface and casing 5Arc surface 5-2 between generate slip, so as to fulfill the rotation of implantation material.
A kind of grasping device for TLIF operations provided by the present invention is described in detail above.The above is onlyIt is the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, do not departing from the present inventionUnder the premise of design, several improvements and modifications can also be made, these improvements and modifications also should be regarded as the protection model of the present inventionIn enclosing.