CN115770097A - Balanced auxiliary fixtures is used in pedicle of vertebral arch nail implantation operation - Google Patents

Abstract

A balance auxiliary tooling for pedicle screw implantation surgery, which relates to the field of pedicle screw internal fixation in the posterior spine, including a horizontal rod with a level I, and the two ends of the horizontal rod are respectively connected to the The tops of the two pedicle screws on both sides of the same vertebrae are connected. By observing the position of the indicator bubble I in the spirit level I, it can be judged whether the two pedicle screws have the same penetration depth. The invention creatively applies the spirit level in the field of construction and installation to spinal surgery, so that the surgeon can quickly and conveniently measure whether the implantation depth of the pedicle screws on both sides is the same without relying on experience, so as to facilitate the surgeon to carry out Adjust in due course.

Description

A kind of balance auxiliary tooling for pedicle screw implantation operation

technical field

The invention relates to a pedicle screw for spinal posterior internal fixation, in particular to a balance auxiliary tooling for pedicle screw implantation.

Background technique

Pedicle screw internal fixation is mostly used for spinal abnormalities caused by spinal deformities, injuries or lesions, such as unstable dislocation fractures of the lumbar and thoracic spine, paraplegic patients, kyphosis, spondylolisthesis, degenerative changes of intervertebral discs and spinal tumors Caused by vertebral body resection patients.

During the operation, the patient needs to be placed in a prone position on the operating bed. After anesthesia, the skin, subcutaneous tissue, deep fascia, and periosteum are incised, and the sacral muscles are peeled off to reveal the affected cone, the cone-plate of the upper and lower spine, and the transverse spine on both sides. After determining the entry point and direction of the pedicle screw, insert the pedicle screw.

Since one pedicle screw needs to be implanted on both sides of the affected cone, and the implantation depth of the two pedicle screws is required to be consistent, during the operation, the chief surgeon usually touches the pedicle screw by hand. The thread length combined with visual observation to judge whether the implantation depth of the two pedicle screws is the same, not only relies heavily on the experience of the surgeon, but also may cause errors.

Contents of the invention

In order to solve the problem that the existing pedicle screw internal fixation needs to rely on the experience of the chief surgeon to judge whether the implantation depth of the pedicle screws on both sides is the same when implanting the pedicle screw, the present invention provides a pedicle screw The balance auxiliary tool for implantation surgery, with the help of this balance auxiliary tool, can quickly and conveniently measure whether the implantation depth of the pedicle screws on both sides is the same without relying on the experience of the chief surgeon, so that the chief surgeon can make timely adjustments. Adjustment.

The technical solution adopted by the present invention to solve the above technical problems is: a balance auxiliary tool for pedicle screw implantation surgery, the balance auxiliary tool includes a horizontal bar with a spirit level I, and the two ends of the horizontal bar are connected by The two pedicle screws are respectively connected to the tops of the two pedicle screws on both sides of the same vertebrae. By observing the position of the indicator bubble I in the level I, it can be judged whether the penetration depth of the two pedicle screws is the same.

As an optimization scheme for the above-mentioned balance auxiliary tooling for pedicle screw implantation surgery, the connecting piece is a rigid rod, and its end is connected to the top ends of two pedicle screws through a fixing part, and the fixing part is A fixing collar arranged on the lower surface of the connecting piece, or a fixing hole penetrating through the connecting piece.

As another optimization scheme of the above-mentioned balance auxiliary tool for pedicle screw implantation surgery, the connecting member is an elastic member or a flexible cable, and is connected to the top ends of the two pedicle screws through a loop at the end.

As another optimization scheme for the above-mentioned balance auxiliary tooling for pedicle screw implantation surgery, a horizontal reference mechanism is provided on one side of the horizontal rod, and the horizontal reference mechanism includes a level II arranged in the middle of the telescopic rod, and the telescopic The two ends of the rod are respectively supported by symmetrically arranged support rods. The bottom of each support rod has an extension backing plate, and the end of the extension backing plate away from the support rod has an open slot, which is stuck between the pedicle screw and the support rod. The acute angle formed on the surface of the vertebra, so that the indicator bubble II in the level II can truly reflect the height of the two sides of the spine, and the two pedicles can be judged by the position difference between the indicator bubble II in the level II and the indicator bubble I in the level I Whether the driving depth of the nails is the same.

As another optimization plan for the above-mentioned balance auxiliary tool for pedicle screw implantation surgery, the support rod is arranged obliquely, and along the extension direction of the spine, the angle α formed between the support rod and the pedicle screw on the same side is 30° -60°.

As another optimization scheme for the above-mentioned balance auxiliary tooling for pedicle screw implantation surgery, the extension plate is a strip-shaped plate covered with medical rubber material, one end of which is fixedly connected to the bottom of the support rod, and the other end is passed through The card slot is stuck at the acute angle formed by the pedicle screw and the surface of the vertebra, so that a gap is formed between the level II and the level I to facilitate the operation of the pedicle screw.

As another optimization scheme for the above-mentioned balance auxiliary tool for pedicle screw implantation surgery, the support rod is arranged obliquely, and in the vertical plane, the extension line of the support rod and the pedicle screw on the same side form a clamp The angle β is 20-50°.

As another optimization plan for the above-mentioned balance auxiliary tooling for pedicle screw implantation surgery, the height of the support rod exceeds the height of the surface of the vertebra exposed by the pedicle screw, so that the position of the level II is higher than the position of the level I .

As another optimization scheme of the above-mentioned balance auxiliary tooling for pedicle screw implantation surgery, an indicating rod is slidably arranged on the level II, and the free end of the indicating rod is slidably clamped on the level I.

As another optimization scheme of the above-mentioned balance auxiliary tooling for pedicle screw implantation surgery, the two ends of the level II are provided with limit rings to limit slippage of the indicating rod.

Compared with the prior art, the present invention has the following beneficial effects:

1) The main body of the balance auxiliary tooling of the present invention is a simple level I. The two ends of the level I are fixed by rigid horizontal rods, and then quickly and detachably connected to the top of the pedicle screw through the connecting piece, because the connection points are all vertebral arches. The top position of the root screw, and the size of the two pedicle screws is generally the same. At this time, if the two pedicle screws are implanted at different depths, the indicator bubble Ⅰ of the level Ⅰ will not be in the middle. The direction of a pedicle screw with a higher position, that is, a lower implanted depth, is deflected, so that the chief surgeon can see at a glance whether it needs to be adjusted and which pedicle screw is adjusted; The level meter in the installation field is applied to the spine surgery, so that the surgeon can quickly and conveniently measure whether the implantation depth of the pedicle screws on both sides is the same without relying on experience, so that the surgeon can make timely adjustments;

2) In order to solve the problem of imbalance on both sides of the patient's spine itself caused by spinal deformation or unreasonable prone posture, the balance auxiliary tooling of the present invention is also provided with a horizontal reference mechanism. The main body of the horizontal reference mechanism is another simple spirit level II, The spirit level II is fixed on the pedicle screw implantation point with a support rod and an extension plate, so that it can characterize the initial horizontal state on both sides of the vertebrae. At this time, the position of the bubble II indicated in the spirit level II in the level reference mechanism becomes Initial position, if the position of the indicator bubble I of the level I is different from that of the indicator bubble II, it indicates that the implantation depths of the two pedicle screws are different. Compared with the indicator bubble II, the indicator bubble I is Which side the pedicle screw is closer to, indicates that the implantation depth of the pedicle screw on this side is small, and the depth of the pedicle screw on this side needs to be adjusted until the position of the indicator bubble I in the level I and the position of the indicator bubble II in the level The position in the level II is the same, indicating that the implantation depth of the pedicle screws on both sides is the same.

Description of drawings

Fig. 1 is a kind of implementation structure schematic diagram of the present invention;

Fig. 2 is a schematic diagram of an implementation structure of the balance auxiliary tooling in Fig. 1;

Fig. 3 is a schematic diagram of another implementation structure of the balance auxiliary tooling in Fig. 1;

Fig. 4 is a structural schematic diagram when there is a horizontal reference mechanism;

Figure 5 is a schematic diagram of the front structure of the horizontal reference mechanism;

Fig. 6 is a schematic diagram of the side structure of the horizontal reference mechanism;

Fig. 7 is a top view structural schematic diagram of a horizontal reference mechanism;

Fig. 8 is a structural schematic diagram when there is an indicating rod in Fig. 4;

Reference signs: 1, vertebra, 2, pedicle screw, 3, spirit level I, 301, indicator bubble I, 4, horizontal rod, 5, connector, 501, fixed part, 6, support rod, 7, extension pad Plate, 701, card slot, 702, strip plate, 8, telescopic rod, 9, spirit level II, 901, indicating bubble II, 902, limit ring, 903, indicating rod.

Detailed ways

The technical solution of the present invention will be described in further detail below in conjunction with specific embodiments. The content that is not specifically described in the following embodiments of the present invention, such as the structure of the pedicle screw, the implantation method, and the implantation angle, etc., should be viewed in detail. Known or should be known to those skilled in the art.

Example 1

A kind of balance auxiliary tooling for pedicle screw implantation surgery, as shown in Figure 1, the balance auxiliary tooling includes a horizontal bar 4 with a level I3, and the two ends of the horizontal bar 4 are respectively connected to the same node through the connecting piece 5. The tops of the two pedicle screws 2 on both sides of the vertebra 1 are connected. By observing the position of the indicator bubble I301 in the level I3, it is judged whether the penetration depths of the two pedicle screws 2 are the same.

In this embodiment, the level I3 is an existing simple level, which has a sealed tube filled with liquid and has an indicating bubble I301 inside. When the sealed tube is level, the indicating bubble I301 is in the center of the sealed tube;

In addition, an indicator mark can be set at the middle position of the level I3, so as to quickly judge whether the indicator bubble I301 coincides with the indicator mark. If they coincide, it indicates that the two pedicle screws 2 have the same penetration depth. Adjust the penetration depth of one of the pedicle screws until the indicator bubble I301 is in the middle of the level I3.

In this embodiment, the connecting piece 5 is a rigid rod whose central axis is on the same straight line as the center of the horizontal rod 4 and the level I3, and its ends pass through the fixing part 501 and the two pedicle screws 2. The top end is connected, and the fixed part 501 is a fixed collar arranged on the lower surface of the connector 5. As shown in Figure 3, the fixed collar can be rigid, such as a stainless steel cylinder, or flexible, such as a rubber cylinder, When testing and using, put the two fixing collars on the tops of the two pedicle screws 2 respectively; The top of the pedicle screw 2 is sufficient.

In addition, the fixing part 501 may also be an elastic loop disposed on the free end of the connecting piece 5 , through which the elastic loop is directly sleeved on the top ends of the two pedicle screws 2 .

Of course, in this embodiment, the connecting member 5 can also be an elastic member or a flexible cable, such as a rubber strip or a cable, and is connected to the top ends of the two pedicle screws 2 through a loop at the end.

Example 2

This embodiment is an improvement made on the basis of embodiment 1. Its main structure is the same as that of embodiment 1. The improvement is that, as shown in Figure 4, one side of the horizontal bar 4 is provided with a horizontal reference Mechanism, as shown in Fig. 5, Fig. 6 and Fig. 7, the horizontal reference mechanism includes a level II9 arranged in the middle of the telescopic rod 8, the level II9 and the telescopic rod 8 are arranged coaxially, and are connected with the level I3, the horizontal rod 4 and The straight lines formed by the parts 5 are parallel, and the two ends of the telescopic rods 8 are respectively supported by the symmetrically arranged support rods 6. The bottom of each support rod 6 has an extension backing plate 7, and the end of the extension backing plate 7 away from the support rod 6 has an open Type card slot 701, the card slot 701 is stuck at the acute angle formed by the pedicle screw 2 and the surface of the vertebra 1, so that the indicator bubble II901 in the level II9 truly reflects the height of the two sides of the vertebra 1, and through the level II9 The position difference between the indicator bubble II 901 and the indicator bubble I 301 in the level I3 determines whether the two pedicle screws 2 have the same penetration depth.

The acute angle formed between the pedicle screw 2 and the surface of the vertebra 1 in this embodiment means that in practice, the implantation angle of the pedicle screw 2 is generally not perpendicular to the implantation of the vertebra, but rather Implanted at an angle so that it forms an acute angle with the surface of the vertebrae.

In this embodiment, two telescopic rods 8 are arranged symmetrically at both ends of the level II 9, and the telescopic rods 8 are selected from existing telescopic structures, such as two cylindrical parts nested in each other and capable of sliding relative to each other;

In this embodiment, in order to stagger the level II9 and the level I3 without affecting the real-time adjustment of the pedicle screw 2, the support rod 6 is set obliquely, and along the extending direction of the spine, the support rod 6 and the vertebra on the same side The included angle α formed by the pedicle screw 2 is 30-60°, as shown in Figure 4; in the vertical plane, the included angle β formed by the extension line of the support rod 6 and the pedicle screw 2 on the same side is 20- 50°, as shown in Figure 6;

In this embodiment, the extension backing plate 7 is a strip plate 702 whose surface is coated with medical rubber material. The strip plate 702 can be made of plastic or stainless steel, preferably plastic, to ensure that it has a certain rigidity support, and the surface is covered with The covered medical rubber material ensures a certain degree of flexibility, and can be better stuck in the sharp angle; one end of the strip plate 702 is fixedly connected with the bottom of the support rod 6, and the other end is stuck in the pedicle through the slot 701. The acute angle between the nail 2 and the surface of the vertebra 1 forms a gap between the level II9 and the level I3 to facilitate the operation of the pedicle screw 2 .

In this embodiment, the height of the support rod 6 exceeds the height of the surface of the vertebra 1 exposed by the pedicle screw 2, so that the position of the level II9 is higher than the position of the level I3; of course, the height of the support rod 6 can also be lower The level at which the pedicle screw 2 exposes the surface of the vertebra 1 makes the position of the level II9 lower than that of the level I3.

In this embodiment, the size of the level II9 and the level I3 are the same, and the length of the telescopic rods 8 at both ends of the level II9 needs to be adjusted, so that the connecting line between the middle positions of the two levels is perpendicular to the horizontal bar 4, that is to say, the two The two ends of the spirit level are at the same position along the extension direction of the spine;

When this embodiment is in use, the extension backing plate 7 of the horizontal reference mechanism is first clamped at the acute angle formed between the pedicle screw 2 and the surface of the vertebra 1, and then the two ends of the connecting piece 5 are fixed on the two vertebral arches. For the top of the pedicle screw 2, first judge the position of the indicating bubble II901 in the level II9, and then judge the position of the indicating bubble I301 in the level I3. If the positions of the two bubbles are the same, it means that the two pedicle screws 2 are implanted. consistent depth.

For better observation, scales can be marked on the tube walls of level I3 and level II9, and the position of the indicator bubble in the level can be characterized by observing which scale the indicator bubble is on.

Example 3

This embodiment is an improvement made on the basis of embodiment 2. Its main structure is the same as that of embodiment 2. The improvement points are: as shown in FIG. The free end of the indicating rod 903 is slidingly clamped on the level I3; the two ends of the level II9 are provided with a limit ring 902 to limit the slipping of the indicating rod 903;

In this embodiment, the size of the level II9 and the level I3 are the same, and the length of the telescopic rods 8 at both ends of the level II9 needs to be adjusted, so that the connecting line between the middle positions of the two levels is perpendicular to the horizontal bar 4, that is to say, the two The two ends of the spirit level are at the same position along the extension direction of the spine;

The purpose of setting the indicating rod 903 in this embodiment is to quickly determine the relative positions of the indicating bubbles in the two spirit levels; the indicating rod 903 is elastic and can be stretched to a certain extent, or it can be directly made into a telescopic rod with adjustable length .

When this embodiment is in use, first clamp the extension backing plate 7 of the horizontal reference mechanism at the acute angle formed by the pedicle screw 2 and the surface of the vertebra 1, and then adjust the position of the indicator rod 903 so that its end is at the level II9. Slide up and finally stop at the position of the indicator bubble II 901, after that, fix the two ends of the connecting piece 5 on the tops of the two pedicle screws 2, then place the free end of the indicator rod 903 on the level I3, and judge the indication The relative position of the free end of the rod 903 and the indicating bubble I301, if the free end of the indicating rod 903 coincides with the position of the indicating bubble I301, it indicates that the implantation depth of the two pedicle screws 2 is consistent; otherwise, the adjustment is closer to the indicating bubble I301 The pedicle screw 2 on one side finally makes the free end of the indicating rod 903 coincide with the position of the indicating bubble I 301 .

Claims (10)

1. The utility model provides a pedicle screw implants operation and uses balanced auxiliary fixtures which characterized in that: balance auxiliary fixtures includes a horizon bar (4) that has spirit level I (3), and the both ends of horizon bar (4) are passed through connecting piece (5) and are connected with two pedicle of vertebral arch nails (2) top that are in same section vertebra (1) both sides respectively, through the position of observing instruction bubble I (301) in spirit level I (3), judge whether the depth of driving into of two pedicle of vertebral arch nails (2) is the same.

2. The balancing auxiliary tool for the pedicle screw implantation surgery according to claim 1, wherein: the connecting piece (5) is a rigid rod, the end part of the connecting piece is connected with the top ends of the two pedicle screws (2) through a fixing part (501), and the fixing part (501) is a fixing lantern ring arranged on the lower surface of the connecting piece (5) or a fixing hole penetrating through the connecting piece (5).

3. The balancing auxiliary tool for the pedicle screw implantation operation as claimed in claim 1, wherein: the connecting piece (5) is an elastic piece or a flexible inhaul cable and is connected with the top ends of the two pedicle screws (2) through a lantern ring at the end part.

4. The balancing auxiliary tool for the pedicle screw implantation surgery according to claim 1, wherein: one side of the horizontal rod (4) is provided with a horizontal reference mechanism, the horizontal reference mechanism comprises a level II (9) arranged in the middle of a telescopic rod (8), two ends of the telescopic rod (8) are supported by symmetrically arranged supporting rods (6) respectively, the bottom of each supporting rod (6) is provided with an extension base plate (7), one end, far away from the supporting rods (6), of each extension base plate (7) is provided with an open type clamping groove (701), the clamping grooves (701) are clamped at acute included angles formed by the pedicle screws (2) and the surfaces of the vertebra (1), so that the indicating bubbles II (901) in the level II (9) truly reflect the heights of the two sides of the vertebra (1), and whether the penetration depths of the two pedicle screws (2) are the same is judged through the position difference of the indicating bubbles II (901) in the level II (9) and the indicating bubbles I (301) in the level I (3).

5. The balancing auxiliary tool for the pedicle screw implantation surgery according to claim 4, wherein: the support rods (6) are obliquely arranged, and an included angle alpha formed by the support rods (6) and the pedicle screws (2) on the same side is 30-60 degrees along the extending direction of the spine.

6. The balancing auxiliary tool for the pedicle screw implantation surgery according to claim 4, wherein: the extension backing plate (7) is a strip-shaped plate (702) coated with medical rubber materials on the surface, one end of the strip-shaped plate is fixedly connected with the bottom of the supporting rod (6), and the other end of the strip-shaped plate is clamped at an acute included angle formed by the pedicle screw (2) and the surface of the vertebra (1) through a clamping groove (701), so that a gap convenient for operating the pedicle screw (2) is formed between the level instrument II (9) and the level instrument I (3).

7. The balancing auxiliary tool for the pedicle screw implantation surgery according to claim 4, wherein: the support rods (6) are obliquely arranged, and in a vertical plane, the extension lines of the support rods (6) form an included angle beta of 20-50 degrees with the pedicle screws (2) on the same side.

8. The balancing auxiliary tool for the pedicle screw implanting operation as claimed in claim 4, wherein: the height of the support rod (6) exceeds the height of the vertebral pedicle nail (2) exposed out of the surface of the vertebra (1), so that the position of the level instrument II (9) is higher than that of the level instrument I (3).

9. The balancing auxiliary tool for the pedicle screw implantation surgery according to claim 4, wherein: an indicating rod (903) is arranged on the level II (9) in a sliding mode, and the free end of the indicating rod (903) is arranged on the level I (3) in a sliding mode.

10. The balancing auxiliary tool for the pedicle screw implanting operation as claimed in claim 9, wherein: and two ends of the level II (9) are provided with limiting rings (902) for limiting the sliding of the indicating rod (903).

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