CN210749464U

CN210749464U - Detachable positioning device for spinal nail placement

Info

Publication number: CN210749464U
Application number: CN201921057074.3U
Authority: CN
Inventors: 帕尔哈提·热西提; 盛伟斌
Original assignee: First Affiliated Hospital of Xinjiang Medical University
Current assignee: First Affiliated Hospital of Xinjiang Medical University
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2020-06-16
Anticipated expiration: 2029-07-08

Abstract

The utility model relates to the technical field of medical equipment, a detachable positioner of nail is put to backbone, include respectively with the backbone centrum rear face of the bone left and right sides laminating first binding board and second binding board and with the spinous process agreeing with of backbone be connected the arch bridge, connect arch bridge bottom both ends respectively with first binding board and second binding board fixed connection, it is regional to be equipped with first cortex bone screw on the first binding board and advance to follow closely, it advances to follow closely to be equipped with second cortex bone screw on the second binding board regional, be equipped with connecting portion on connecting the arch bridge, all be equipped with the recess of extending from top to bottom on the lateral wall about every connecting plate, form thin-walled structure between two recesses. The utility model has the advantages of reasonable and compact structure, convenient to use, it sets up through thin wall construction, left fluting and right fluting, has obviously shortened operation time to reduce the operation degree of difficulty and risk, shortened operation time.

Description

Detachable positioning device for spinal nail placement

Technical Field

The utility model relates to the technical field of medical equipment, a detachable positioner of nail is put to backbone.

Background

The current cortical bone screw track technology (CBT) was proposed by Ueno and Santoni BG in 2009. The screw is used for sequentially holding vertebral plate cortex of a needle inlet point, vertebral arch pedicle inner side wall cortex and vertebral arch pedicle outer side wall cortex, and finally, a nail head is stopped at an upper end plate of a vertebral body.

However, the inventors found in previous clinical, imaging and anatomical studies that the CBT technique described above still has some disadvantages: firstly, the tail of the traditional CBT screw is impacted due to the fact that the tail is close to the zygapophyseal joint, so that discomfort occurs to a patient, even the adjacent zygapophyseal joint is damaged in the screw placing process, the degeneration of the adjacent zygapophyseal joint and the adjacent corresponding intervertebral disc is accelerated, and the occurrence of 'adjacent vertebra disease' is caused; secondly, the traditional CBT screw technology does not well utilize the periphery of a screw placing point (fracture at the screw placing point is easy to occur), the inner side wall of the vertebral pedicle and the outer cortical bone of the vertebral body upper end plate, so that the stability of the screw is reduced; thirdly, anatomical references adopted by the nail feeding points do not reflect the minimally invasive principle of the spinal surgery, and particularly in the traditional bone grafting fusion revision between transverse processes, the lower edge of the transverse process is not easy to expose and anatomical morphological variation exists, so that an operator is difficult to confirm the lower edge of the transverse process; fourthly, the zygapophyseal joint anatomically referenced by the nail feeding point is easy to degenerate, and the patients receiving the operation treatment in clinic are often serious in zygapophyseal joint degeneration, so that deviation is easy to cause; fifthly, at the front end of the nail track of the traditional CBT screw technology, the nucleus pulposus part of the intervertebral disc can be damaged by breaking through the upper end plate of the vertebral body, so that the intervertebral disc is degenerated to cause the occurrence of the adjacent vertebral disease; sixthly, the traditional CBT anatomical reference cannot play a role in the spine revision surgery, a 3D printing guide plate designed according to the traditional anatomical sign cannot be accurately attached to a corresponding bone surface in the spine revision surgery, the guiding capability is lost, and the nail placement point and the nail placement angle can only be confirmed through higher-frequency X-ray perspective; seventhly, the existing cortical bone screw for clinical use comprises the design of a Soler screw produced by Medtronic company in America, and the design of a full cortical bone screw channel is not completely started from the idea of the full cortical bone screw channel, and half of the screw thread is designed into cancellous bone screw threads, but the design of the full cortical bone and full cortical bone screw channel in the full length of the screw channel is not really realized, so that the mechanical stability of the contact surface of the screw and the bone is influenced to a certain extent.

Aiming at the defects of the cortical bone screw technology, the inventor further perfects the technology and provides an improved cortical bone screw nail setting technology. The nail placing points, the nail placing anatomical reference, the nail path nail placing direction and the like of the technology are improved: the screw placing points are designed to enter along tangent lines with the inner side wall of the pedicle, so that threads can be better held with the thicker inner side wall of the pedicle, and a larger outward extending angle of the screw is provided, so that the screw can be held with the cortical bone end plate on the outer side of the vertebral body, the effective length of the screw and the contact area of the screw and the cortical bone in the screw channel are further increased, the biomechanical stability of the screw is increased, because the full length of the screw channel in the improved cortical screw technology is basically cortical bone, and the front half part of the existing cancellous screw (pedicle screw) is designed to be cancellous screw threads, a plurality of inconveniences are brought in the screw placing process in the improved technology, the difficulty of screwing the screw in the cortical bone screw channel is increased, the operation time is prolonged, more importantly, the cancellous screw thread design is not beneficial to increasing the holding force of the screw in the cortical bone, and the stability of the screw is reduced, the risk of operation failure is increased, so the inventor designs a cortical bone screw with a screw part thread which is all cortical bone threads on the basis of the existing cancellous bone screw (pedicle screw), and the holding force of the screw in the spine is obviously increased through the improved cortical bone screw nailing technology and the design of the cortical bone screw.

However, the nail positioning guide plate matched with the improved cortical bone screw nail placing technology is not provided in the prior art, so that when the improved cortical bone screw nail placing technology is adopted to perform an operation on a patient, the nail is required to be placed by the aid of an X-ray machine, operation time and operation risk are increased, perspective time of the X-ray machine in the operation is increased, and X-ray radiation hazard brought to medical staff and the patient is increased.

Disclosure of Invention

The utility model provides a detachable positioner of nail is put to backbone has overcome above-mentioned prior art not enough, and it can effectively be solved because of lack with jointly put nail technique matched with supplementary nail location baffle of putting and lead to the operation degree of difficulty big, the operation time is long, the problem that operation failure risk is high.

The technical scheme of the utility model is realized through following measure: a spinal full-cortical bone threaded screw comprises a first binding plate and a second binding plate which are respectively bound with the left side and the right side of the back bone surface of a spinal vertebral body and a connecting arch bridge which is bound with the spinous process of the spinal, wherein the two ends of the bottom of the connecting arch bridge are respectively fixedly connected with the first binding plate and the second binding plate, the first binding plate is provided with a first cortical bone screw nail feeding area, the second binding plate is provided with a second cortical bone screw nail feeding area, a first cortical bone screw nail placing guide pipe inclines from left to right, the first cortical bone screw nail feeding area is a left open groove with an opening facing right, a second cortical bone screw nail placing guide pipe inclines from right to left, the second cortical bone screw nail placing area is a right open groove with an opening facing left, the connecting bridge is provided with a connecting part, the connecting part is connected with a first cortical bone screw nail placing guide pipe corresponding to the first cortical bone screw nail feeding area through a connecting plate, first cortex bone screw is put nail stand pipe from left to right upslope, is connected with the second cortex bone screw that corresponds the regional setting of second cortex bone screw nail entering through another connecting plate on the connecting portion and puts the nail stand pipe, and the nail stand pipe is put to the second cortex bone screw is from right to left upslope, and two connecting plates constitute one and link up from top to bottom and the V type structure that the opening is preceding, all are equipped with the recess that extends from top to bottom on the lateral wall about every connecting plate, form thin wall structure between two recesses.

The following is a further optimization or/and improvement of one of the above technical solutions of the present invention:

above-mentioned connecting portion can include diaphragm and connecting rod, about the diaphragm is to setting up and bottom in the middle of and connecting arched bridge top fixed connection, connecting rod bottom and diaphragm fixed connection, two connecting plates all with connecting rod fixed connection, be equipped with at least one kirschner wire assistance-localization real-time pipe on the diaphragm, be equipped with kirschner wire assistance-localization real-time hole on the connection arched bridge that corresponds kirschner wire assistance-localization real-time pipe position.

The connecting arch bridge is U-shaped, the middle of the bottom of the transverse plate is fixedly connected with the middle of the top of the connecting arch bridge, the left side and the right side of the transverse plate are respectively provided with a Kirschner wire auxiliary positioning tube, the right side of the connecting arch bridge corresponding to the position of the Kirschner wire auxiliary positioning tube on the left side is provided with a right Kirschner wire auxiliary positioning hole, and the left side of the connecting arch bridge corresponding to the position of the Kirschner wire auxiliary positioning tube on the right side is provided with a left Ki.

The utility model has the advantages of reasonable and compact structure, convenient to use, it sets up through thin-walled structure, left fluting and right fluting, has obviously shortened the operation time to reduce the operation degree of difficulty and risk, shortened the operation time, reduce the perspective time of X-ray machine in the art and the X-ray radiation harm that brings for medical personnel, patient.

Drawings

Fig. 1 is a schematic structural view of the preferred embodiment of the present invention.

Fig. 2 is a left side view schematic diagram of fig. 1.

The codes in the figures are respectively: 1 is first rigging board, 2 is the second rigging board, and 3 are connecting the arched bridge, and 4 are that first cortex bone screw advances to follow closely the region, and 5 are that second cortex bone screw advances to follow closely the region, and 6 are that first cortex bone screw puts a nail stand pipe, and 7 are that second cortex bone screw puts a nail stand pipe, and 10 are the diaphragm, and 11 are the connecting rod, and 12 are the connecting plate, and 15 are the recess, and 16 are ke shi needle assistance-localization real-time pipe.

Detailed Description

The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.

In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, back, upper, lower, first, second, etc. is determined in accordance with the layout direction of the drawings attached to the specification.

The invention will be further described with reference to the following examples and drawings:

as shown in the attached drawings 1 and 2, the vertebral body comprises a first attaching plate 1 and a second attaching plate 2 respectively attached to the left and right sides of the posterior facet of the vertebral body of the vertebral column and a connecting arch bridge 3 engaged with the spinous process of the vertebral column, the two ends of the bottom of the connecting arch bridge 3 are respectively fixedly connected with the first attaching plate 1 and the second attaching plate 2, the first attaching plate 1 is provided with a first cortical bone screw nail feeding area 4, the second attaching plate 2 is provided with a second cortical bone screw nail feeding area 5, the first cortical bone screw nail feeding area 4 is a left open groove with an opening facing to the right, the second cortical bone screw nail feeding area 5 is a right open groove with an opening facing to the left, the connecting arch bridge 3 is provided with a connecting part, the connecting part is connected with a first cortical bone screw placing guide tube 6 corresponding to the first cortical bone screw nail feeding area 4 through a connecting plate 12, the first cortical bone screw placing guide tube 6 is inclined upwards from left to right, the connecting portion is connected with a second cortical bone screw nail placing guide pipe 7 corresponding to the second cortical bone screw nail feeding area 5 through another connecting plate 12, the second cortical bone screw nail placing guide pipe 7 inclines upwards from right to left, the two connecting plates 12 form a V-shaped structure which is up-down communicated and has a forward opening, a groove 15 extending up and down is formed in each connecting plate 12 left and right side wall, and a thin-wall structure is formed between the two grooves 15. According to the requirements, the first cortical bone screw and the second cortical bone screw are all provided with threads on screw rods of screws which are all set to be cortical bone threads on the basis of the traditional pedicle screws, the overall length of nail placing channels of the cortical bone screws is basically cortical bone, the first cortical bone screw and the second cortical bone screw can be conveniently and rapidly and correctly placed into a vertebral body through the arrangement of the first cortical bone screw nail placing guide tube 6 and the second cortical bone screw nail placing guide tube 7, during nail placing operation, a guide sleeve internally sleeved with a kirschner wire or a drill rod inner core is sleeved into the first cortical bone screw nail placing guide tube and the second cortical bone screw nail placing guide tube, then the kirschner wire or the drill rod inner core is drilled into the pedicle through a hand drill or an electric drill, after the first cortical bone screw nail placing channel is placed to a certain depth and no mistake is confirmed, a tool can be used for cutting the thin-wall structure on the connecting plate 12, so that the first cortical bone screw nail placing guide tube 6, The second cortical bone screw nail-placing guide tube 7 is separated from the connecting arch bridge 3, so that the first cortical bone screw nail-placing guide tube 6, the second cortical bone screw nail-placing guide tube 7 and the guide sleeve can be directly taken down from the Kirschner wire or the drill rod inner core, in addition, the first attaching plate 1, the second attaching plate 2 and the connecting arch bridge 3 can be directly taken down from the Kirschner wire or the drill rod inner core through the arrangement of the left open slot and the right open slot, then the screw tap is used for reaming and tapping the formed pore channel along the Kirschner wire or the drill rod inner core, the screw tap is taken out after the tapping is finished, then the hollow cortical bone screw nail is put into the Kirschner wire or the drill rod inner core, finally, the whole nail-placing process can be finished by taking out the Kirschner wire or the drill rod inner core, namely, the utility model can be taken down from the spine in the whole nail-placing process, compared with the existing positioning guide plate, the Kirschner wire or the drill, the operation time is obviously shortened, the operation difficulty and risk are reduced, the fluoroscopy time of the X-ray machine in the operation and the X-ray radiation hazard brought to medical staff and patients are reduced.

The spinal full-cortical bone screw can be further optimized or/and improved according to actual needs:

as shown in the accompanying drawings 1 and 2, the connecting portion comprises a transverse plate and a connecting rod, the transverse plate is arranged in the left-right direction and is fixedly connected with the top of the arch bridge in the middle of the bottom, the bottom end of the connecting rod is fixedly connected with the transverse plate, the two connecting plates are fixedly connected with the connecting rod, at least one Kirschner wire auxiliary positioning tube is arranged on the transverse plate, at least one Kirschner wire auxiliary positioning tube 16 is arranged on the transverse plate 10 of the connecting arch bridge corresponding to the position of the Kirschner wire auxiliary positioning tube, and Kirschner wire auxiliary positioning holes are arranged on the connecting arch bridge corresponding to the position of the Ki. From this it can with the utility model discloses firm fixing on the backbone increases supplementary nail placing operation time stability, avoids taking place the skew, connects arch bridge 3's U type design in addition, also is favorable to art person and assistant to wear out and pierce through the spinous process and observe its concrete position that gets into when connecting 3 opposite sides of arch bridge from connecting 3 one sides of arch bridge, avoids too deeply and penetrates the spinal canal and arouse the nerve function harm at the ke shi needle.

As shown in fig. 1 and 2, the left and right sides of the transverse plate 10 are respectively provided with a kirschner wire auxiliary positioning tube 16, the right side of the connecting arch bridge 3 corresponding to the left kirschner wire auxiliary positioning tube 16 is provided with a right kirschner wire auxiliary positioning hole, and the left side of the connecting arch bridge 3 corresponding to the right kirschner wire auxiliary positioning tube 16 is provided with a left kirschner wire auxiliary positioning hole. Can be with through the cross fixation of two ke shi needles the utility model discloses more firm fixing on the backbone further increases supplementary nail when operation stability of putting.

Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.

Claims

1. A spine screw-placing detachable positioning device comprises a first attaching plate and a second attaching plate which are respectively attached to the left side and the right side of the back bone surface of a spine vertebral body, and a connecting arch bridge which is engaged with the spinous process of the spine, wherein two ends of the bottom of the connecting arch bridge are respectively fixedly connected with the first attaching plate and the second attaching plate, the spine screw-placing detachable positioning device is characterized in that a first cortical bone screw feeding area is arranged on the first attaching plate, a second cortical bone screw feeding area is arranged on the second attaching plate, the first cortical bone screw feeding area is a left open groove with an opening facing to the right, the second cortical bone screw feeding area is a right open groove with an opening facing to the left, a connecting part is arranged on the connecting arch bridge, a first cortical bone screw nail-placing guide tube which is arranged corresponding to the first cortical bone screw feeding area is connected to the connecting part through a connecting plate, and the first cortical bone screw nail-placing guide tube is inclined upwards from left to right, the connecting portion is connected with a second cortical bone screw nail placing guide pipe corresponding to the second cortical bone screw nail feeding region through another connecting plate, the second cortical bone screw nail placing guide pipe inclines upwards from right to left, the two connecting plates form a V-shaped structure which is vertically communicated and has a forward opening, a groove extending vertically is formed in each connecting plate left and right side wall, and a thin-wall structure is formed between the two grooves.

2. The detachable positioning device for the spinal screw placement according to claim 1, wherein the connecting portion comprises a transverse plate and a connecting rod, the transverse plate is arranged in a left-right direction, the bottom of the transverse plate is fixedly connected with the top of the connecting arch bridge, the bottom of the connecting rod is fixedly connected with the transverse plate, the two connecting plates are fixedly connected with the connecting rod, the transverse plate is provided with at least one Kirschner wire auxiliary positioning tube, and the connecting arch bridge corresponding to the position of the Kirschner wire auxiliary positioning tube is provided with the Kirschner wire auxiliary positioning hole.

3. The detachable positioning device for spinal screw placement according to claim 1, wherein the connecting arch bridge is U-shaped, the middle of the bottom of the transverse plate is fixedly connected with the middle of the top of the connecting arch bridge, the left and right sides of the transverse plate are respectively provided with a kirschner wire auxiliary positioning tube, the right side of the connecting arch bridge corresponding to the left kirschner wire auxiliary positioning tube is provided with a right kirschner wire auxiliary positioning hole, and the left side of the connecting arch bridge corresponding to the right kirschner wire auxiliary positioning tube is provided with a left kirschner wire auxiliary positioning hole.