CN214318153U - Pedicle of vertebral arch needle feeding point positioner of lumbar vertebra minimal access surgery - Google Patents

Abstract

The utility model discloses a lumbar vertebrae minimal access surgery pedicle of vertebral arch needle point positioner, including elevating gear, removal bracing piece, recess and location needle subassembly, the removal bracing piece both sides are located to the elevating gear symmetry, elevating gear and removal bracing piece are articulated to be connected the setting, the recess runs through the setting of removal bracing piece middle part, the location needle subassembly symmetry is portable to be located on the recess. The utility model belongs to the technical field of medical instrument, specifically indicate one kind and rise through elevating gear control location needle inserting subassembly and descend, guarantee stability to through the angle modulation of adjusting the needle feeding tube, guarantee the lumbar vertebrae minimal access surgery pedicle of vertebral arch point of entry positioner of symmetry.

Description

Pedicle of vertebral arch needle feeding point positioner of lumbar vertebra minimal access surgery

Technical Field

The utility model belongs to the technical field of medical instrument, specifically indicate a lumbar vertebrae minimal access surgery pedicle of vertebral arch needle insertion point positioner.

Background

With the development of pedicle screw and rod systems, pedicle screw fixation has become one of the primary means of maintaining thoracic stability after thoracolumbar surgery. To date, various techniques have been used in clinical practice, which mainly aim to reduce the difficulty of screw placement of pedicle screws and improve the precision of screw placement, and these techniques mainly include intraoperative use of a C-arm machine, CT three-dimensional reconstruction assistance, and computer navigation. If the pedicle screws are placed improperly through the lamina, the misplaced screws can cause severe neurovascular damage and may also lead to early failure of fixation or pseudoarthroplasty. In the clinical operation process, doctors are required to determine needle insertion points and adjust the drilling angle by means of sight observation and clinical experience, the requirements on the skill and skill of the operation of the doctors are high, the safety and operability of the operation are low, and the deviation of drilling and nail setting is easy to occur to cause operation failure.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a through the ascending and descending of elevating gear control location needle inserting subassembly, guarantee stability to through the angle modulation of adjusting the needle feeding tube, guarantee the lumbar vertebrae minimal access surgery pedicle of vertebral arch point of entry positioner of symmetry.

In order to realize the above functions, the utility model discloses the technical scheme who takes as follows: a vertebral pedicle needle feeding point positioning device for minimally invasive lumbar surgery comprises a lifting device, a movable supporting rod, a groove and a positioning needle feeding assembly, wherein the lifting device is symmetrically arranged on two sides of the movable supporting rod, the lifting device and the movable supporting rod are arranged in a hinged connection mode, the movable supporting rod and the lumbar vertebra of a patient are controlled to be in a parallel state when the two sides of the lumbar vertebra of the patient are not flat through the hinged connection mode, symmetrical needle feeding can still be achieved, the groove penetrates through the middle of the movable supporting rod, and the positioning needle feeding assembly is symmetrically and movably arranged on the groove; the positioning needle inserting component comprises a knob, a movable lantern ring, a fixed cushion layer, a connecting rod, a movable sleeve block, an extension rod, an angle plate, a needle inserting tube and a rotating shaft, the movable lantern ring is movably sleeved on the movable supporting rod and arranged on the groove, two ends of the connecting rod are respectively connected to the lower part of the movable lantern ring and the movable sleeve block, the knob is arranged in a T-shaped structure, the knob can be rotatably arranged on the movable lantern ring in a penetrating way, the fixed cushion layer is arranged below the vertical end of the knob and in the movable lantern ring, the extension rod is arranged below the movable sleeve block, the angle plate is fixedly arranged at one end of the extension rod far away from the movable sleeve block, the angle plate is of a plate-shaped structure with a semicircular section, the rotating shaft penetrates through one end of the extension rod far away from the movable sleeve block, the rotary shaft is arranged at the lower end of the rotary penetrating angle plate, the needle feeding tube is fixedly sleeved on the rotary shaft, and the needle feeding tube is of a tubular structure with two open ends.

Further, elevating gear includes gear one, gear two, lead screw pair, lead screw shell, fixed block and cushion, the bracing piece both sides are located to the vice symmetry of lead screw, the lead screw shell is located on the cushion, the fixed block is located on the lead screw shell diapire, the lead screw is rotatable to be located on the fixed block, the rotatable lead screw pair setting that runs through of lead screw, the one end top that the fixed block was kept away from to the lead screw is equipped with gear one, two one ends of gear are connected the setting with the meshing of gear one, two other ends of gear run through the lead screw shell lateral wall and locate the lead screw shell outside.

Further, the one end that gear two kept away from gear one cup joints and is equipped with the lantern ring, the lead screw shell outside is located to the lantern ring, and convenience of customers controls the rotation.

Furthermore, an auxiliary fixing rod is arranged at the center of the movable supporting rod and penetrates through the center of the movable supporting rod, and the auxiliary fixing rod is used for fixing the spinous process of the segment of responsibility during use.

The utility model adopts the above structure to gain beneficial effect as follows: the utility model provides a pair of lumbar vertebrae minimal access surgery pedicle of vertebral arch needle insertion point positioner easy operation, the mechanism is compact, and reasonable in design, through addding elevating gear, through rotatory gear one, the control lead screw rotates, it descends to drive the rising of location needle insertion subassembly simultaneously, stability has been guaranteed, and remove bracing piece and the articulated setting of lead screw pair, patient's lumbar vertebrae both sides are uneven, the control is removed the bracing piece and is kept the parallel state with the lumbar vertebrae, still can realize the symmetry needle insertion, and through the angle board, guarantee the bilateral symmetry needle insertion, accord with backbone biomechanics stability, the operation curative effect has been guaranteed.

Drawings

FIG. 1 is an overall structure view of the positioning device for the pedicle of vertebral arch needle insertion point in the lumbar minimally invasive surgery of the utility model;

fig. 2 is a partially enlarged view of a portion a in fig. 1.

The needle inserting device comprises a lifting device 1, a lifting device 2, a movable supporting rod 3, a groove 4, a positioning needle inserting assembly 5, a knob 6, a movable lantern ring 7, a fixed cushion layer 8, a connecting rod 9, a movable lantern block 10, an extension rod 11, an angle plate 12, a needle inserting tube 13, a rotating shaft 14, a first gear 15, a second gear 16, a lead screw 17, a lead screw pair 18, a lead screw shell 19, a fixed block 20, a cushion block 21, a lantern ring 22 and an auxiliary fixed rod.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-2, the pedicle of vertebral arch needle insertion point positioning device for minimally invasive lumbar surgery of the present invention comprises a lifting device 1, a movable support rod 2, a groove 3 and a positioning needle insertion assembly 4, wherein the lifting device 1 is symmetrically arranged at two sides of the movable support rod 2, the lifting device 1 and the movable support rod 2 are hinged, the groove 3 is arranged through the middle part of the movable support rod 2, and the positioning needle insertion assembly 4 is symmetrically and movably arranged on the groove 3; the positioning needle inserting assembly 4 comprises a knob 5, a movable lantern ring 6, a fixed cushion layer 7, a connecting rod 8, a movable sleeve block 9, an extension rod 10, an angle plate 11, a needle inserting tube 12 and a rotating shaft 13, wherein the fixed lantern ring 21 is movably sleeved on the movable supporting rod 2 and arranged below a groove 3, the movable lantern ring 6 is movably sleeved on the movable supporting rod 2 and arranged on the groove 3, two ends of the connecting rod 8 are respectively connected below the movable lantern ring 6 and the movable sleeve block 9, the knob 5 is in a T-shaped structure arrangement, the knob 5 is rotatably arranged on the movable lantern ring 6 in a penetrating way, the fixed cushion layer 7 is arranged below the vertical end of the knob 5 and arranged in the fixed lantern ring 21, the extension rod 10 is arranged below the movable sleeve block 9, the angle plate 11 is fixedly arranged on one end of the extension rod 10 far away from the movable sleeve block 9, and the angle plate 11 is in a plate-shaped structure with a semicircular cross section, the pivot 13 runs through extension rod 10 and keeps away from one of removing the nested 9 and serves, the rotatable angle board 11 lower extreme that runs through of pivot 13 sets up, advance fixed the cup jointing of needle tubing 12 in pivot 13 setting, advance needle tubing 12 and set up for both ends open-ended tubular structure.

Elevating gear 1 includes first gear 14, second gear 15, lead screw 16, lead screw pair 17, lead screw shell 18, fixed block 19 and cushion 20, the 2 both sides of movable support pole are located to the vice 17 symmetry of lead screw, lead screw shell 18 is located on cushion 20, fixed block 19 is located on the 18 diapire of lead screw shell, lead screw 16 is rotatable to be located on fixed block 19, the rotatable lead screw pair 17 setting that runs through of lead screw 16, the one end top that lead screw 16 kept away from fixed block 19 is equipped with first gear 14, two 15 one ends of gear are connected the setting with the meshing of first gear 14, the two 15 other ends of gear run through lead screw shell 18 lateral walls and locate the lead screw shell 18 outside.

And one end of the second gear 15, which is far away from the first gear 14, is sleeved with a lantern ring 21, and the lantern ring 21 is arranged on the outer side of the screw rod shell 18.

An auxiliary fixing rod 22 is arranged at the center of the movable supporting rod 2, and the auxiliary fixing rod 22 penetrates through the center of the movable supporting rod 2.

When the device is used, firstly, the first gear 14 is rotated, the first gear 14 drives the second gear 15 to rotate, the second gear 15 controls the screw rod 16 to rotate, the screw rod 16 drives the screw rod pair 17 to move up and down, the positioning needle inserting assembly 4 moves up and down, meanwhile, the screw rod pairs 17 in the lifting devices 1 on two sides are controlled to move, the movable supporting rod 2 is parallel to the lumbar vertebra of a patient, then, the pedicle screw placing point on one side is preferentially stripped and exposed in the lumbar vertebra pedicle screw placing operation, the movable sleeve block 9 moves on the movable supporting rod 2 through the rotation of the control knob 5, the needle inserting tube 12 on one side is controlled to rotate through the rotating shaft 13, after the position and the angle are confirmed to be correct, the spinous process of the responsible segment is fixed through the auxiliary fixing rod 22, then, the position of the needle inserting tube 12 on the other side is adjusted, the positions and the angles of the needle inserting tubes 12 on two sides are completely symmetrical, and then, and the lumbar vertebra nail placing operation is carried out.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims (4)

1. The utility model provides a lumbar vertebrae minimal access surgery pedicle of vertebral arch needle point positioner which characterized in that: the needle inserting device comprises a lifting device, a movable supporting rod, a groove and a positioning needle inserting assembly, wherein the lifting device is symmetrically arranged on two sides of the movable supporting rod, the lifting device and the movable supporting rod are hinged, the groove penetrates through the middle of the movable supporting rod, and the positioning needle inserting assembly is symmetrically and movably arranged on the groove; the positioning needle inserting component comprises a knob, a movable lantern ring, a fixed cushion layer, a connecting rod, a movable sleeve block, an extension rod, an angle plate, a needle inserting tube and a rotating shaft, the movable lantern ring is movably sleeved on the movable supporting rod and arranged on the groove, two ends of the connecting rod are respectively connected to the lower part of the movable lantern ring and the movable sleeve block, the knob is arranged in a T-shaped structure, the knob can be rotatably arranged on the movable lantern ring in a penetrating way, the fixed cushion layer is arranged below the vertical end of the knob and in the movable lantern ring, the extension rod is arranged below the movable sleeve block, the angle plate is fixedly arranged at one end of the extension rod far away from the movable sleeve block, the angle plate is of a plate-shaped structure with a semicircular section, the rotating shaft penetrates through one end of the extension rod far away from the movable sleeve block, the rotary shaft is arranged at the lower end of the rotary penetrating angle plate, the needle feeding tube is fixedly sleeved on the rotary shaft, and the needle feeding tube is of a tubular structure with two open ends.

2. The pedicle needle-feeding point positioning device for minimally invasive lumbar surgery of claim 1, wherein: the lifting device comprises a first gear, a second gear, a lead screw pair, a lead screw shell, a fixed block and a cushion block, wherein the two sides of the movable support rod are symmetrically arranged on the lead screw pair, the lead screw shell is arranged on the cushion block, the fixed block is arranged on the bottom wall of the lead screw shell, the lead screw is rotatably arranged on the fixed block, the lead screw is rotatably arranged to penetrate through the lead screw pair, the top of one end, away from the fixed block, of the lead screw is provided with the first gear, one end of the second gear is meshed with the first gear and is arranged, and the other end of the second gear penetrates through the side wall of the lead screw shell and is arranged on the outer side of the lead screw shell.

3. The pedicle needle-feeding point positioning device for minimally invasive lumbar surgery of claim 2, wherein: and one end of the second gear, far away from the first gear, is sleeved with a lantern ring, and the lantern ring is arranged on the outer side of the screw shell.

4. The pedicle needle-feeding point positioning device for minimally invasive lumbar surgery of claim 1, wherein: an auxiliary fixing rod is arranged at the center of the movable supporting rod and penetrates through the center of the movable supporting rod.

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