CN114081552A - Be used for lumbar vertebrae way of escape operation to show distraction device - Google Patents

Abstract

The invention discloses an exposure and distraction device for posterior lumbar surgery, which comprises a first end fixing piece, a universal connecting mechanism, a main drag hook and a second end fixing piece; the first end fixing piece is connected with one end of the universal connecting mechanism at one end; the universal connecting mechanism is provided with two connecting ends, and the head of each end can rotate at multiple planes and multiple angles. The main drag hook is directly or indirectly connected with the other end of the universal connecting mechanism side; and the second end fixing piece is arranged at the tail end of the head of the main drag hook. The main drag hook is connected with the second end fixing piece through the head end of the main drag hook, and the tail end of the main drag hook is connected with the first end fixing piece through a series of connections, so that the main drag hook is stable and plays a role in opening.

Description

Be used for lumbar vertebrae way of escape operation to show distraction device

Technical Field

The invention relates to the technical field of posterior lumbar surgeries, in particular to an exposing and expanding device for a posterior lumbar surgery.

Background

In recent years, patients with lumbago and leg pain increase year by year, the disease rate is as high as 60% -80%, and the health of people is seriously affected. Lumbar intervertebral disc protrusion, lumbar spinal stenosis, lumbar spondylolisthesis and other degenerative diseases of the lumbar vertebra are common causes of lumbocrural pain. Although most of the early lumbocrural pain can be relieved by conservative treatment of medicines, physical therapy, rest and the like. However, if the patient is in the state of illness along with the diagnosis, the lower limb muscle strength is reduced, cauda equina syndrome and symptoms seriously affect the work and life, the patient often needs surgical treatment. The lumbar posterior intervertebral fusion is a commonly used surgical treatment means for treating lumbar degenerative diseases at present. When the lumbar vertebra is operated, a doctor can make an incision along the longitudinal axis direction of the spine, then the soft tissues of the back are separated and exposed, and then the tissues on two sides of the spine are propped open by using the drag hook or the propping device, so that a satisfactory operation visual field is obtained, and the doctor can conveniently perform the operation.

The existing distraction device for the operation visual field is connected to an operation bed through a fixing device or directly and freely distracts in soft tissues in an incision through the distraction device. Free distraction devices are prone to intraoperative displacement. The position of a patient may slightly change relative to the operating bed during the operation, and the conventional distraction device fixed on the operating bed may also shift on the patient, which affects the stability of the operation field. In the operation process, the distraction system is unstable and is easy to deviate from the operation target, thereby influencing the operation and the operation safety.

Disclosure of Invention

The invention aims to provide a stable distraction device for lumbar posterior surgery exposure, obtain more stable operation visual field, facilitate surgical operation and improve the surgical efficiency and the surgical safety. The distraction system of the lumbar posterior is directly fixed on the lumbar vertebral body of a patient through a special fixing device.

In order to achieve the purpose, the invention provides the following technical scheme: comprises a first end fixing piece, a universal connecting mechanism, a main drag hook and a second end fixing piece;

the first end fixing piece is connected with one end of the universal connecting mechanism at one end;

the universal connecting mechanism is provided with two connecting ends, and the head of each end can rotate at multiple planes and multiple angles.

The main drag hook is directly or indirectly connected with the other end of the universal connecting mechanism side;

and the second end fixing piece is arranged at the tail end of the head of the main drag hook.

Preferably, the device also comprises a working frame, a plurality of cross connecting structures and auxiliary drag hooks;

the working frame is a rectangular frame and is arranged between the universal connecting machine and the main drag hook, one side of the working frame is connected with the other end of the universal connecting mechanism, a cross connecting structure is arranged on the opposite side of the working frame, which is far away from the universal connecting mechanism, and the main drag hook is connected with the cross connecting structure; the auxiliary drag hook is fixed on the working frame on one side opposite to the main drag hook through the cross-shaped connecting structure, and the main drag hook and the auxiliary drag hook can rotate relative to multiple planes at the working frame at multiple angles.

Preferably, the first end fixing member includes:

the vertical part of the T-shaped connecting rod is connected with one end of the universal connecting mechanism through threads;

and the pedicle screws are arranged on two sides of the cross rod of the T-shaped connecting rod.

Preferably, the second end fixing member is a ball joint member; the main retractor is arranged at the head end of the main retractor; the side surface of the tail part of the screw is provided with a sphere, and a ball socket joint part at the head end of the main drag hook is matched and connected with the sphere part of the screw.

Preferably, the main retractor also comprises a light source jack which is arranged at the corner of the main retractor.

Preferably, the device also comprises 2 other auxiliary draw hooks which are respectively arranged on the two remaining sides of the working frame through two cross-shaped connecting structures.

Preferably, the T-shaped connecting rod and the pedicle screw form a detachable structure.

Compared with the prior art, the invention has the beneficial effects that: this a distraction device for lumbar vertebrae way of escape operation shows, adopt mutually supporting between a plurality of mechanisms, functional strong, utilize the snap-on of rigid structure, come to strut lumbar vertebrae operation department, and be connected through the screw with settling on the lumbar vertebrae centrum and fix the system of strutting and patient's lumbar vertebrae, avoid at the operation in-process, the channel system is unstable, lead to the operation target skew, and after the operation is accomplished, can utilize the pedicle of vertebral arch screw that fixes when performing the operation, it is long when reducing the operation.

1. According to the invention, two parts of the pedicle screws are distributed on the T-shaped connecting rod, and the first end fixing piece is used as a fixing piece on one side of the lumbar vertebra. The coccyx of 2 pedicle screws fixed on the lumbar vertebra at one side is connected and fixed with the two ends of the horizontal rod part of the inverted T-shaped rod. The tail part of the vertical rod of the T rod is connected with one end of the universal connecting mechanism through threads. The other end of the universal connecting mechanism is connected with the thread part of the working frame. The heads at the two ends of the universal connecting mechanism have a multi-plane and multi-angle rotating function, so that the difficulty of the connection of the device and the position adjustment of the working frame due to the mismatching between the angle of the T rod and the physiological anterior convex angle of the lumbar vertebra can be avoided. After the operation is accomplished, directly dismantle the T word connecting rod from the pedicle of vertebral arch screw and take off, then install the connecting rod of normal pedicle of vertebral arch screw, avoid the repetition of lumbar vertebrae pedicle of vertebral arch to put the nail, improve this distraction device's use convenience.

2. According to the invention, a ball-and-socket joint connection is formed by a ball attached to the side of the tail of a screw and a ball-and-socket joint piece at the head end of a main drag hook. A screw with a sphere is placed on the pedicle of the other side of the lumbar vertebral body of the same intervertebral space segment. The head end of the main draw hook is connected with the screw through a ball-and-socket joint. The tail part of the main drag hook is connected with the working frame through a cross connecting structure and is positioned at two sides of the working frame in a relative relationship with the universal connecting mechanism. Work frame one side is fixed through universal coupling mechanism, T pole, 2 pieces of pedicle of vertebral arch screws and lumbar vertebrae one side, and the work frame opposite side that is the relative relation is fixed through cross connection structure, main drag hook, the other side of taking spheroidal screw and lumbar vertebrae, and 3 pieces of screws that do not on a straight line like this can provide a plane fixed, can be with stable the fixing in lumbar vertebrae incision top of work frame. The work frame is a rectangular frame formed by connecting 4 cross rods, and auxiliary drag hooks can be installed on the other 3 cross rods except for the main drag hook through a cross connecting structure. In addition, in the operation assembling process, can dismantle the work frame to and do not install and assist the drag hook, be connected with the vertical pole of T pole through universal coupling mechanism one end, the retracting action of main drag hook is stabilized to the mode of one end and main drag hook caudal joint, carries out simple and easy strutting, improves this strutting arrangement's adaptability, convenience.

Drawings

FIG. 1 is a schematic top view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1A;

FIG. 3 is a perspective view of the first end fastener of the present invention;

FIG. 4 is a schematic view of an assembly structure according to the first embodiment of the present invention;

FIG. 5 is a schematic view of an assembly structure according to a second embodiment of the present invention.

In the figure: 1. a first end fixture; 101. a T-shaped connecting rod; 102. pedicle screws; 103. a threaded arm; 2. a working frame; 3. a universal connection mechanism; 4. a cross-shaped connecting structure; 5. a main drag hook; 6. a second end fixing member; 601. a ball and socket joint member; 602. a sphere; 603. a screw; 7. a main drag hook; 8. a light source jack.

Detailed Description

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-3, the present invention provides a technical solution: an exposure distraction device for posterior lumbar surgery, comprising: the universal connecting mechanism 3 is arranged on one side of the outer part of the first end fixing piece 1; the first end fixing member 1 includes: a T-shaped link 101 provided at one side of the outside of the work frame 2; pedicle screws 102 provided on both outer sides of the T-shaped connecting rod 101; a threaded arm 103 provided at one end of the T-shaped connecting rod 101. The T-shaped connecting rod 101 is in threaded connection with the universal connecting mechanism 3 through the threaded arm 103, and the T-shaped connecting rod 101 and the pedicle screw 102 form a detachable structure. Pedicle of vertebral arch screw 102 distributes on T word connecting rod 101 has two places, with the mounting of one end on first end mounting 1 is as the lumbar vertebrae, utilize universal connection mechanism 3 as the connecting piece, adjust the angle of connection messenger work frame levelization of T word connecting rod and work frame, and make one side of work frame and lumbar vertebrae centrum fix, guarantee the stability of propping up in the operation process, after the operation is accomplished, directly dismantle T word connecting rod 101 and take off, install the connecting rod of normal pedicle of vertebral arch screw, the repetition of removing the lumbar vertebrae from is put the nail, improve this use convenience of strutting the device.

As shown in fig. 4, the present invention provides a technical solution: an exposure and distraction device for posterior lumbar surgery is characterized in that a working frame 2 is a rod-shaped rectangular frame and is arranged on one side of the outer part of a universal connecting mechanism 3; a cross connection structure 4 provided on the outer portion 2 side of the work frame 2; a main drag hook 5 arranged at one end of the cross connecting structure 4; the auxiliary drag hook 7 is arranged on the cross connecting structure on the opposite side of the main drag hook; the second fixing piece 6 is arranged at one position of the head end of the main drag hook 5; and the light source jack 8 is arranged at the corner of the main drag hook 5. The working frame 2 is movably connected with the main drag hook 5 through a cross connecting structure 4, and the cross connecting structure 4 is arranged at two positions of the working frame. The second end fixing member 6 includes: a ball joint member 601 provided at the head end of the main retractor 5; a ball 602 provided at the inner side of the ball joint member 601; and a screw 603 provided on an outer side of the ball 602. The ball joint part 601 is connected with the main draw hook 5, and the main draw hook 5 and the light source jack 8 form a fixing structure. The screw 603 forms a ball joint connection via the ball 602 and the ball joint part 601. The rigid working frame 2 is used as an operation space for an operation, so that the operation process is prevented from being influenced due to the fact that the working frame 2 is loosened in the operation process. The other end of the working frame 2 utilizes the cross connecting structure 4 and the main drag hook 5 to carry out cross angle adjustment, so that the port of the main drag hook 5 faces downwards, the port is connected with the second end fixing part 6, after the installation is finished, the ball joint is used for connection, the angle of the bottom end screw 603 can be adjusted, and the fixing on one side of the lumbar vertebra is facilitated. When the whole expanding width needs to be adjusted, the main drag hook 5 is directly horizontally adjusted in the cross connecting structure 4. 2 one side of work frame is fixed through universal connector 3, T pole, 2 pieces of pedicle of vertebral arch screws and lumbar vertebrae one side, and the work frame opposite side that is the relative relation is fixed through cross connection structure 4, main drag hook 5, the screw 603 of taking the spheroid and the opposite side of lumbar vertebrae, and 3 pieces of fix with screws realize 3 points like this and confirm a plane, can be with stable the fixing in lumbar vertebrae incision top of work frame, guarantee the stability of operation passageway. In addition, in the operation assembly process, can dismantle work frame 2 to and do not install and assist drag hook 7, universal connector is direct to be connected with 5 tail ends of main drag hook, stabilizes the retractor of main drag hook, improves this adaptability, the convenience that struts the device.

As shown in fig. 5, the present invention provides a technical solution: the utility model provides a distraction device that is used for lumbar vertebrae way of escape operation to show, universal coupling mechanism 3's a side connects 5 tail ends of main drag hook, and 5 head ends of main drag hook are equipped with second end mounting 6, and second end mounting 6 includes: a ball joint member 601 provided at the head of the main hook 5; a ball 602 provided at the inner side of the ball joint member 601; and a screw 603 provided on an outer side of the ball 602. The other side of universal connection mechanism 3 is connected first end mounting 1, and first end mounting 1 includes: the T-shaped connecting rod 101 and the pedicle screws 102 are arranged on two outer sides of the T-shaped connecting rod 101; a threaded arm 103 provided at one end of the T-shaped connecting rod 101. The T-shaped connecting rod 101 is in threaded connection with the universal connecting mechanism 3 through the threaded arm 103, and the T-shaped connecting rod 101 and the pedicle screw 102 form a detachable structure. Two pedicle screws 102 are distributed on the T-shaped connecting rod 101.

In summary, when the distraction device for the lumbar posterior surgery exposure is used, firstly, 2 pedicle screws 102 are placed into the pedicle of one side of the lumbar vertebral body of the surgery section, and the screw 603 is placed into the pedicle of the other side of the lumbar vertebral body of the same section. Then the transverse rod 2 side at the bottom end of the T-shaped connecting rod 101 is fixedly connected with the pedicle screw 102. The tail of the T-shaped connecting rod 101 is provided with an M5 threaded hole, the T-shaped connecting rod is in threaded connection with M5 at one end of the universal connecting mechanism 3, the other end M5 of the universal connecting mechanism 3 is in threaded connection with a protrusion at one side of the working frame 2, and the protrusion is also internally provided with an M5 threaded hole for being embedded and installed. Then, the ball joint member 601 at the head end of the main retractor 5 is connected with the ball part 602 at the tail part of the screw 603 to form a ball joint. The main hook 5 is then connected to the work frame 2 via the cross connection 4. The universal connecting mechanism 3 is locked after the ideal position of the working frame is adjusted, and the cross connecting structure 4 is locked after the main drag hook is adjusted to the ideal retracting angle. The auxiliary draw hook 7 is arranged on the cross rod of the working frame 2 on the opposite side of the main draw hook 5 by the cross connecting structure 4, and the auxiliary draw hook can be added on the rest 2 cross rods of the working frame 2 by the cross connecting structure 4 according to requirements. This is when the entire distractor device is fully secured in the desired position, resulting in a stable surgical field. After the operation is finished, the T-shaped connecting rod 101 is directly detached from the pedicle screw 102, and a normal pedicle screw connecting rod is installed at the pedicle screw 102, so that the screw replacement is avoided. It is also very convenient to replace screw 603 with a conventional pedicle screw.

It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims (8)

1. The utility model provides a be used for lumbar vertebrae way of escape operation to show distraction device which characterized in that: comprises a first end fixing piece (1), a universal connecting mechanism (3), a main draw hook (5) and a second end fixing piece (6);

the device comprises a first end fixing piece (1), wherein one end of the first end fixing piece (1) is connected with one end of a universal connecting mechanism (3);

the universal connecting mechanism is provided with two connecting ends;

a main drag hook (5) which is arranged at the other end of the universal connecting mechanism side; the main drag hook (5) is of an L-shaped structure;

and the second end fixing piece (6) is arranged at the head end of the main drag hook (5).

2. An exposure distraction device for posterior lumbar procedures according to claim 1, further comprising: the device also comprises a working frame (2), a plurality of cross connecting structures (4) and auxiliary drag hooks (7);

the working frame (2) is a rectangular frame and is arranged between the universal connecting machine (3) and the main draw hook (5), one side of the working frame (2) is connected with the other end of the universal connecting mechanism (3), a cross connecting structure (4) is arranged on one side of the working frame (2) far away from the universal connecting mechanism (3), and the main draw hook (5) is connected with the cross connecting structure (4); the auxiliary draw hook (7) is fixed on the working frame (2) on one side, opposite to the main draw hook (5), of the main draw hook (5) through the cross-shaped connecting structure, and the main draw hook (5) and the auxiliary draw hook (7) can rotate at multiple angles relative to multiple sheet surfaces of the working frame.

3. An exposure distraction device for posterior lumbar procedures according to claim 1, further comprising: the first end fixing member (1) includes:

the vertical part of the T-shaped connecting rod (101) is connected with one end of the universal connecting mechanism (3) through a thread (103);

pedicle screws (102) disposed on both sides of the cross bar of the T-shaped connecting rod (101).

4. An exposure distraction device for posterior lumbar procedures according to claim 1, further comprising: the second end fixing piece (6) is a ball-and-socket joint piece (601); the main retractor is arranged at the head end of the main retractor (5); and the tail side of the screw (603) is provided with a ball, and the ball-and-socket joint part (601) is matched and connected with the ball (602) part of the screw (603).

5. An exposure distraction device for posterior lumbar procedures according to claim 1 or 2, wherein: the multifunctional retractor is characterized by further comprising a light source jack (8) which is arranged at the corner of the main retractor (5).

6. An exposure distraction device for posterior lumbar procedures according to claim 2, wherein: and two cross connecting structures (4) which are arranged on the two remaining sides of the working frame (2).

7. An exposure distraction device for posterior lumbar procedures according to claim 3, wherein: the T-shaped connecting rod (101) and the pedicle screw (102) form a detachable structure.

8. An exposure distraction device for posterior lumbar procedures according to claim 6, further comprising: and auxiliary drag hooks are arranged on the two cross-shaped connecting structures (4).

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