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CN-122005039-A - Spine orthopedic fixing device convenient to position

CN122005039ACN 122005039 ACN122005039 ACN 122005039ACN-122005039-A

Abstract

The invention provides a spine orthopedic fixing device convenient to position, and belongs to the technical field of spine fixtures. This backbone orthopedic fixing device convenient to location, including connecting rod casing, pre-roll over excellent body, closing cap and bulb nail body, be provided with bulb nail angle fixing mechanism on the connecting rod casing, bulb nail angle fixing mechanism is including connecting the shell and fixing, the connecting shell sets firmly the inside at the connecting rod casing, the last through groove that link up from top to bottom of having seted up of connecting the shell. According to the invention, the brake block and the friction ring are not contacted any more by arranging the ball stud angle fixing mechanism, at the moment, the universal ball of the ball stud body can freely rotate in the connecting shell, after the universal ball rotates to a preset angle on the connecting shell, the brake rod is loosened, after the limitation of external force is lost, the brake block returns to the original position through the resilience force of the first spring, and the angle of the ball stud body is fixed through the high friction resistance between the brake block and the friction ring.

Inventors

  • YANG DAN
  • QU HONG
  • GUO JIANING

Assignees

  • 中国人民解放军北部战区总医院

Dates

Publication Date
20260512
Application Date
20260326

Claims (10)

  1. 1. The spine orthopedic fixing device convenient to position comprises a connecting rod shell (1), a pre-folded rod body (2), a cap (3) and a ball stud body (4), and is characterized in that the connecting rod shell (1) is provided with a ball stud angle fixing mechanism which comprises, The connecting shell (501), the connecting shell (501) is fixedly arranged in the connecting rod shell (1), a penetrating groove (502) which penetrates up and down is formed in the connecting shell (501), the ball stud body (4) and the connecting shell (501) are hinged through a universal ball head, and a friction ring (503) for fixing the ball stud body (4) is fixedly arranged on the universal ball head of the ball stud body (4); The fixed ring (504), fixed ring (504) fixed mounting is at the inner wall of connection shell (501), fixed ring (504) is last to slide and is provided with a plurality of brake lever (505), one side that is close to friction ring (503) of brake lever (505) has set firmly brake block (506) that are used for fixed friction ring (503).
  2. 2. The spine orthopedic fixing device convenient to position according to claim 1, wherein a plurality of limiting grooves (507) are formed in the top of the fixing ring (504), limiting blocks (508) are slidably arranged in the limiting grooves (507), the limiting blocks (508) are fixedly connected with the brake rods (505), and first springs (509) are arranged between the inner walls of the limiting grooves (507) and the limiting blocks (508).
  3. 3. The spine orthopedic fixing device convenient to position according to claim 2, wherein a swivel (510) is rotatably arranged on the inner wall of the connecting shell (501), a plurality of arc-shaped grooves (511) which are vertically communicated are formed in the swivel (510), sliding shafts (512) are slidably arranged in the arc-shaped grooves (511), the sliding shafts (512) are fixedly connected with limiting blocks (508), and the number of the limiting grooves (507) is identical to that of the braking rods (505).
  4. 4. A spinal column orthopedic fixing device convenient for positioning according to claim 3, characterized in that a gear ring (513) is coaxially fixed on the surface of the swivel (510), a driving gear (514) is rotatably arranged in the connecting housing (501), and the driving gear (514) is meshed with the gear ring (513).
  5. 5. The spine orthopedic fixing device convenient for positioning according to claim 4, wherein a transmission rod (515) is coaxially and fixedly arranged on the driving gear (514), a first bevel gear (516) is coaxially and fixedly arranged on the surface of the transmission rod (515), a second bevel gear (517) wheel is rotatably arranged in the connecting shell (501), and the first bevel gear (516) and the second bevel gear (517) wheel are meshed.
  6. 6. The spine orthopedic fixation device convenient for positioning according to claim 5, wherein a first screw rod (518) is coaxially and fixedly arranged in the second bevel gear (517) wheel, a first sleeve (519) is slidably arranged in the connecting rod shell (1), one end of the first screw rod (518) penetrating into the connecting rod shell (1) is sleeved in the first sleeve (519) in a threaded manner, and a pulling handle (520) is arranged on the first sleeve (519).
  7. 7. The spine orthopedic fixing device convenient to position according to claim 6, wherein a connecting rod pre-bending mechanism is arranged in the connecting rod shell (1), the connecting rod pre-bending (605) mechanism comprises a sliding groove (601), the sliding groove (601) is formed in the top of the connecting rod shell (1), a first lifting plate (602) is slidably arranged in the sliding groove (601), a second spring (603) is arranged on the first lifting plate (602), a second lifting plate (604) is arranged at the other end of the second spring (603), a pre-bending block (605) is fixedly arranged on the second lifting plate (604), and an arc-shaped opening is formed in the top of the pre-bending block (605).
  8. 8. The spinal column orthopedic fixing device convenient for positioning according to claim 7, wherein a third bevel gear (606) is coaxially fixed on the surface of the first screw rod (518), a fourth bevel gear (607) is rotatably arranged in the connecting rod housing (1), and the third bevel gear (606) and the fourth bevel gear (607) are meshed.
  9. 9. The spine orthopedic fixing device convenient to position according to claim 8, wherein a second screw rod (608) is coaxially and fixedly arranged on the fourth bevel gear (607), a limiting groove (609) is formed in the connecting rod shell (1), a second sleeve (610) is slidably arranged in the limiting groove (507), the second sleeve (610) is in threaded sleeve connection with the surface of the second screw rod (608), and the top of the second sleeve (610) is fixedly connected with the bottom of the first lifting plate (602).
  10. 10. The spine orthopedic fixing device convenient to position according to claim 7, wherein a third screw rod (611) is fixedly arranged at the bottom of the second lifting plate (604), a third sleeve (612) and a pawl (613) are rotatably arranged at the top of the first lifting plate (602), a ratchet wheel (614) is coaxially and fixedly arranged on the surface of the third sleeve (612), and a scroll torsion spring (615) is arranged between the pawl (613) and the first lifting plate (602).

Description

Spine orthopedic fixing device convenient to position Technical Field The invention relates to the technical field of spinal fixation devices, in particular to a spinal orthopedic fixation device convenient to position. Background In the spinal surgery, the spinal orthopedic fixing device is a core instrument for treating diseases such as scoliosis, fracture, dislocation and the like, and has the core functions of realizing the reduction, fixation and correction of the spinal by matching components such as pedicle screws, connecting rods and the like, and along with the development of minimally invasive surgery technology, the surgery has higher requirements on the positioning accuracy, the operation convenience and the component linkage of the fixing device. The existing spine orthopedic fixing device has the key technical points that firstly, a ball stud is used as a core positioning component, a single point location locking structure is adopted for angle adjustment and fixation, an accurate limiting and positioning mechanism is lacked in the adjustment process, angle deviation is easily caused by touch in operation, stability after fixation is insufficient, orthopedic effect is affected, secondly, the pre-bending operation of a connecting rod depends on clinical experience of doctors, an accurate positioning reference structure matched with the angle of the ball stud is lacked, the deviation between the pre-bending size and actual orthopedic requirement is large, repeated adjustment is needed, operation time is prolonged, and patient wounds are increased. Disclosure of Invention In order to remedy the above-mentioned shortcomings, the present invention provides an orthopedic spinal fixation device that overcomes or at least partially solves the above-mentioned problems, which facilitates positioning. The invention is realized in the following way: The invention provides a spine orthopedic fixing device convenient for positioning, which comprises a connecting rod shell, a pre-folded rod body, a cap and a ball stud body, wherein the connecting rod shell is provided with a ball stud angle fixing mechanism which comprises, The connecting shell is fixedly arranged in the connecting rod shell, a through groove which penetrates up and down is formed in the connecting shell, the ball stud body and the connecting shell are hinged through a universal ball, and a friction ring for fixing the ball stud body is fixedly arranged on the universal ball of the ball stud body; The fixed ring is fixedly arranged on the inner wall of the connecting shell, a plurality of brake rods are slidably arranged on the fixed ring, and a brake block for fixing the friction ring is fixedly arranged on one side, close to the friction ring, of each brake rod. In a preferred scheme, a plurality of spacing groove has been seted up at the top of solid fixed ring, the inside slip in spacing groove is provided with the stopper, the stopper with brake lever fixed connection, be provided with first spring between the inner wall in spacing groove and the stopper. In a preferred scheme, the inner wall of the connecting shell is rotatably provided with a swivel, a plurality of arc-shaped grooves which are vertically communicated are formed in the swivel, sliding shafts are arranged in the arc-shaped grooves in a sliding mode, the sliding shafts are fixedly connected with limiting blocks, and the number of the limiting grooves is consistent with that of the braking rods. In a preferred scheme, the surface of swivel is coaxial fixedly to have the ring gear, the inside rotation of coupling shell is provided with drive gear, drive gear meshes with the ring gear. In a preferred scheme, the driving gear is coaxially and fixedly provided with a transmission rod, the surface of the transmission rod is coaxially and fixedly provided with a first bevel gear, the inside of the connecting shell is rotatably provided with a second bevel gear, and the first bevel gear is meshed with the second bevel gear. In a preferred scheme, the inside coaxial first lead screw that has set firmly of second bevel gear, the inside slip of connective bar casing is provided with first sleeve, first lead screw runs through to the inside one end thread bush of connective bar casing and establishes in first telescopic inside, be provided with on the first sleeve and pull the handle. In a preferred scheme, the inside of connective bar casing is provided with connective bar mechanism of bending in advance, connective bar mechanism of bending in advance includes the spout, the top at connective bar casing is seted up to the spout, the inside slip of spout is provided with first lifter plate, be provided with the second spring on the first lifter plate, the other end of second spring is provided with the second lifter plate, the piece of bending in advance has been set firmly on the second lifter plate, the top of piece of bending in advance is provided with the arc opening. In a pref