CN208426201U - A kind of pedicle screw pitman guiding device - Google Patents

Abstract

The utility model discloses a kind of pedicle screw pitman guiding devices.Including a lengthening sleeve, one slide lock sleeve and an I type turncap device, the lengthening sleeve includes a sleeve body, one is located at the clamping guiding groove for the U-shaped open-like shape that the card slot on the top of the sleeve body and an arcuation elastic clip being oppositely arranged by two panels positioned at the bottom end of the sleeve body form, the hemispherical projections that card pressure is matched with the slide lock sleeve are fixed on the top outer wall of the two panels arcuation elastic clip, the I type turncap device includes T-type handle, connecting rod and T-type turncap handle, the T-type handle is placed in the card slot, the T-type turncap handle is placed in the bottom end of the clamping guiding groove.The utility model not only can simply, conveniently, effectively assist common pedicle screw pitman to install, and can error in reduction amount rod motion, shorten operating time, protect art area soft tissue.

Description

A kind of pedicle screw pitman guiding device

Technical field

The utility model relates to the field of medical instrument technology, more particularly, in a kind of spinal operation can it is simple, conveniently, The effectively device of auxiliary guidance pedicle screw pitman installation.

Background technique

Currently, three columns that cervical arc root screw internal fixing system can effectively obtain backbone are fixed, and the fixed life of backbone is met Object mechanical requirements, it has also become most common spinal internal fixation system is one of the core technology of spinal operation treatment.Pass through vertebral arch Pedicle screw is connected into an entirety by root screw pitman, restores spinal stability.However in spinal operation, because moving back Change, lateral bending enter the reasons such as pin mark difference, after pedicle screw implantation, often not point-blank, and existing pedicle of vertebral arch Screw is mostly Universal pedicle screw design, and the pedicle screw head of a nail for installing pitman is caused to be easy to change after by External force interference Direction, and art area operating space is narrow in vivo, adjustment is difficult, increases pitman installation difficulty, extends operating time.Separately Outside, since the Universal pedicle screw head of a nail has the characteristic of three-dimensional perspective rotation, the error of pitman linear measure longimetry is also increased.

Existing some micro-wound percutaneous pedicle screws or long-tail pedicle screw are by extending head of a nail length, the company of reducing It takes over the baton installation difficulty, but the processing of these screws is complicated at high cost, and must be used together with matched special purpose tools, is not suitable for The installation of most of pedicle screw pitman.In order to solve this problem, Chinese invention CN103120598A discloses one kind Spinal orthopedic bar apparatus for placing has pedicle screw clamping device and screw thread pressurizing device.Pedicle screw clamping device One end be clamping part, and the other end be grip part, grip part one end have internal thread part.Screw thread pressurizing device has external screw thread Portion.Wherein the internal thread part of pedicle screw clamping device and screw thread pressurizing device external thread part combine, and Orthopedic rod is pressed into It is locked in pedicle screw.Which solves need replacing pedicle screw clamping device because pedicle screw model is different Defect.But the device, in order to obtain powerful chucking power, front end U-shaped opening is smaller, keeps pitman installation still real in vivo It applies, and it by screw fastening level pressure stick, operation is time-consuming, this design is larger to lateral bending and Minimally Invasive Surgery help, to conventional waist The installation help of vertebra pitman is simultaneously little, and patient can not be made to obtain the effect of Fast Installation pitman by simple operations.

Summary of the invention

In order to overcome the shortcomings of that existing pedicle screw pitman installation effectiveness is low, the utility model provides a kind of vertebra Pedicle screw pitman guiding device, the device not only can simply, conveniently, effectively assist common pedicle screw pitman to install, And can error in reduction amount rod motion, shorten operating time, the soft tissues such as protection art area muscle.

The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of pedicle screw pitman guidance Device, including the extension is set to including a lengthening sleeve, a slide lock sleeve and an I type turncap device, the I type turncap device In sleeve, the lengthening sleeve include a sleeve body, one be located at the sleeve body top card slot and one be located at it is described The clamping guiding groove for the U-shaped open-like shape that the arcuation elastic clip of the bottom end of sleeve body being oppositely arranged by two panels forms, it is described Slide lock sleeve covers in the sleeve body, is fixed on the top outer wall of the two panels arcuation elastic clip and the cunning The hemispherical projections of dynamic locking bushing matching card pressure, the I type turncap device includes T-type handle, connecting rod and T-type turncap handle, institute The both ends for stating connecting rod are respectively fixed with the T-type handle and the T-type turncap handle, and the T-type handle is placed in the card slot, The T-type turncap handle is placed in the bottom end of the clamping guiding groove.

The head end diameter of the clamping guiding groove is greater than the clamping guiding groove as a further improvement of the utility model, Tail end diameter.

The length of the clamping guiding groove is 5cm-10cm as a further improvement of the utility model,.

The length and the length phase of the lengthening sleeve of the I type turncap device as a further improvement of the utility model, Together.

The utility model has the beneficial effects that design is simple, and it is easy to operate, it can securely clamp existing common pedicle of vertebral arch The screw head of a nail facilitates adjustment head of a nail direction, and the linear measure longimetry of pitman and installation is extended to external implementation, is effectively reduced Pitman installation difficulty shortens operating time, protects art area soft tissue.

Detailed description of the invention

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is the structural schematic diagram of the utility model.

Fig. 2 is the schematic perspective view of the utility model.

Fig. 3 is the dismantling schematic diagram of the utility model.

1. lengthening sleeve in figure, 2. slide lock sleeves, 3.I type turncap device, 4. card slots, 5. sleeve bodies, 6. clampings are drawn Guide groove, 7.T type handle, 8. connecting rods, 9.T type turncap handle, 10. arcuation elastic clips, 11. hemispherical projections.

Specific embodiment

As shown in Figure 1 to Figure 3, a kind of pedicle screw pitman guiding device a comprising lengthening sleeve (1), a sliding Locking bushing (2) and an I type turncap device (3), the I type turncap device (3) are set in the lengthening sleeve (1), the extension Sleeve (1) is located at the sleeve including the card slot (4) and one on the top that a sleeve body (5), one are located at the sleeve body (5) The clamping guiding groove for the U-shaped open-like shape that the arcuation elastic clip (10) of the bottom end of ontology (5) being oppositely arranged by two panels forms (6), the slide lock sleeve (2) covers on the sleeve body (5), outside the top of the two panels arcuation elastic clip (10) The hemispherical projections (11) that card pressure is matched with the slide lock sleeve (2) are fixed on wall, the I type turncap device (3) includes T Type handle (7), connecting rod (8) and T-type turncap handle (9), the both ends of the connecting rod (8) are respectively fixed with the T-type handle (7) With the T-type turncap handle (9), the T-type handle (7) is placed in the card slot (4), and the T-type turncap handle (9) is placed in the folder Hold the bottom end of guiding groove (6)；The head end diameter of clamping guiding groove (6) is greater than the tail end diameter of clamping guiding groove (6)； The length of clamping guiding groove (6) is 5cm-10cm；The length of the I type turncap device (3) and the length of the lengthening sleeve (1) It spends identical.

In use, after completing the mergings of all pedicle screws, with clamping guiding groove (6) the folder clamping head of a nail, slide lock Sleeve (2) slide downward card presses hemispherical projections (11), so that it is closed clamping action, T-type to reach pressurization clamping guiding groove (6) Turncap handle (9) is placed in pedicle screw pitman slot, forms firm clamping action, then adjusts vertebra by lengthening sleeve (1) The direction of the nut head of a nail after adjustment, is taken out I type turncap device (3), measures connection by being located at external lengthening sleeve (1) Stick length will trim curved good pitman, be installed by external clamping guiding groove (6), import vertebral arch along clamping guiding groove (6) On the root head of a nail, nut is installed, after, it resets slide lock sleeve (2), successively takes out clamping guiding groove (6) folder.

Place is not described in detail for the utility model, is the well-known technique of those skilled in the art.

It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims Property range.

Claims (4)

1. a kind of pedicle screw pitman guiding device, it is characterized in that: it includes a lengthening sleeve, a slide lock sleeve and one I type turncap device, the I type turncap device are set in the lengthening sleeve, and the lengthening sleeve is located at including a sleeve body, one The card slot on the top of the sleeve body and an arcuation being oppositely arranged by two panels positioned at the bottom end of the sleeve body are elastic The clamping guiding groove of the U-shaped open-like shape of intermediate plate composition, the slide lock sleeve cover in the sleeve body, the two panels arc The hemispherical projections that card pressure is matched with the slide lock sleeve, the I type rotation are fixed on the top outer wall of shape elastic clip Cap device includes T-type handle, connecting rod and T-type turncap handle, and the both ends of the connecting rod are respectively fixed with the T-type handle and described T-type turncap handle, the T-type handle are placed in the card slot, and the T-type turncap handle is placed in the bottom end of the clamping guiding groove.

2. a kind of pedicle screw pitman guiding device according to claim 1, it is characterized in that: the clamping guiding groove Head end diameter is greater than the tail end diameter of the clamping guiding groove.

3. a kind of pedicle screw pitman guiding device according to claim 1, it is characterized in that: the clamping guiding groove Length is 5cm-10cm.

4. a kind of pedicle screw pitman guiding device according to claim 1, it is characterized in that: the I type turncap device Length is identical as the length of the lengthening sleeve.