CN210843396U - Thoracolumbar minimally invasive posterior screw extension sleeve - Google Patents

Abstract

The utility model relates to a chest lumbar vertebrae wicresoft way screw extension sleeve pipe that goes backward. Chest lumbar vertebrae wicresoft way screw extension sleeve pipe includes: an inner sleeve, an outer sleeve and an inner rotary sleeve; the inner sleeve penetrates through the outer sleeve and then is clamped with the outer sleeve through the inner rotating sleeve; the inner rotating sleeve is rotatably connected with the inner sleeve, is rotatably connected with the inner sleeve and is suitable for retracting or pushing the inner sleeve forwards so as to lock or loosen the pedicle screw in the inner sleeve when rotating. On the one hand, the pedicle screw is prolonged, and on the other hand, the pedicle screw of different types can be replaced through rotating the inner rotating sleeve, so that the use of doctors is facilitated.

Description

Thoracolumbar minimally invasive posterior screw extension sleeve

Technical Field

The utility model relates to the field of medical equipment, concretely relates to chest lumbar vertebrae wicresoft way screw extension sleeve pipe backward.

Background

With the continuous update of surgical instruments, the continuous emergence of advanced medical imaging equipment and the application of computer-assisted navigation in surgery, minimally invasive techniques are rapidly developing in spinal surgery. Minimally invasive refers to a surgical or examination procedure that achieves optimal surgical efficacy with minimal invasion and minimal physiological disturbance, and is primarily characterized by minimal trauma. The surgical operation is used as a planned wound, and an operator should strive to reduce the wound of the operation to the minimum and achieve the purpose of minimally invasive surgery. The minimally invasive surgery reduces the operation time, reduces the incidence of complications, relieves the tissue injury and bleeding during the operation, shortens the recovery time of patients, relieves the operation pain, has beautiful incisions, shortens the hospitalization and recovery time, and reduces the economic cost of medicine use and hospitalization cost.

The minimally invasive surgery meets the requirements of the harmonious society on public medical health care from the two aspects of medical professional attributes and social attributes, and the thoracolumbar minimally invasive technique is taken as a part of the traditional surgical technique and becomes a great trend of the development of the spinal internal fixation technology.

However, in some scenarios that need to be stretched into for use, the pedicle screw in the thoracolumbar spine minimally invasive technique in the prior art is very troublesome to fix, and needs to be fixed by using an additional device.

How to solve the above problems is a need to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a chest lumbar vertebrae wicresoft way of escape screw extension sleeve pipe to the realization is with the pedicle of a cone nail when fixed, carries out the purpose of extension.

In order to solve the technical problem, the utility model provides a chest lumbar vertebrae wicresoft way of escape screw extension sleeve pipe, include:

an inner sleeve, an outer sleeve and an inner rotary sleeve;

the inner sleeve penetrates through the outer sleeve and then is clamped with the outer sleeve through the inner rotating sleeve;

the inner rotating sleeve is rotatably connected with the inner sleeve and is suitable for retracting or pushing the inner sleeve forwards so as to lock or loosen the pedicle screw in the inner sleeve when the inner rotating sleeve rotates.

Further, the internal rotation sleeve comprises a rotating part and a fixing part;

the fixing part is fixedly connected with the outer sleeve;

the rotating part and the fixing part are rotationally connected through a clamping ring;

the fixed part, the rotating part and the inner sleeve are sleeved from outside to inside in sequence;

the bottom of one end of the inner sleeve, which is close to the rotating part, is provided with an L-shaped sliding chute;

a sliding column extends out of the inner wall of the rotating part along the diameter direction;

the rotating part drives the sliding column to move at the bottom end of the L-shaped sliding groove when rotating, so that the inner rotating sleeve is clamped with the inner sleeve, and the pedicle screw is locked.

Furthermore, a limit table is arranged on the side wall of the inner sleeve, which is close to the rotating part;

the rotating part pass through the jump ring with the spacing platform elastic connection of endotheca, and be suitable for when rotating the perpendicular end of L shape spout, pop out the endotheca through the jump ring to loosen the nail of awl bow root.

Furthermore, a gasket is arranged between the clamp spring and the limiting table.

Furthermore, the inner wall of one end of the outer sleeve, which is far away from the inner rotating sleeve, is provided with a limiting block;

the limiting block is suitable for limiting when the outer sleeve is sleeved on the inner sleeve.

The beneficial effects of the utility model are that, the utility model provides a chest lumbar vertebrae wicresoft way of escape screw extension sleeve pipe. Chest lumbar vertebrae wicresoft way screw extension sleeve pipe includes: an inner sleeve, an outer sleeve and an inner rotary sleeve; the inner sleeve penetrates through the outer sleeve and then is clamped with the outer sleeve through the inner rotating sleeve; the inner rotating sleeve is rotatably connected with the inner sleeve and is suitable for locking or loosening the pedicle screw in the inner sleeve during rotation. On the one hand, the pedicle screw is prolonged, and on the other hand, the pedicle screw of different types can be replaced through rotating the inner rotating sleeve, so that the use of doctors is facilitated.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a sectional view of the thoracolumbar spine minimally invasive posterior screw extension sleeve provided by the utility model.

Fig. 2 is a perspective view of the thoracolumbar vertebra minimally invasive posterior screw extension sleeve provided by the utility model.

In the figure: 110-inner sleeve; 111-a limit station; 112-a gasket; 120-coat; 121-a limiting block; 130-inner rotary sleeve; 131-a rotating part; 132-a fixed part; 133-a snap ring; 134-spool.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

Example 1

Referring to fig. 1 and fig. 2, in this embodiment 1, a thoracolumbar minimally invasive posterior screw extension cannula is provided, including: an inner sleeve 110, an outer sleeve 120, and an inner rotating sleeve 130; the inner sleeve 110 passes through the outer sleeve 120 and then is clamped with the outer sleeve 120 through the inner rotary sleeve 130; the inner rotating sleeve 130 is rotatably coupled to the inner sleeve 110 and adapted to rotate, thereby retracting or advancing the inner sleeve 110 to lock or unlock the pedicle screw in the inner sleeve 110. On the one hand, the pedicle screw is lengthened, and on the other hand, different types of pedicle screws can be replaced through the rotating inner rotating sleeve 130, so that the use of doctors is facilitated. The pedicle screw is arranged at the opening of the inner sleeve 110.

In the present embodiment, the inner rotating sleeve 130 includes a rotating portion 131 and a fixing portion 132; the fixing portion 132 is fixedly connected with the outer sleeve 120; the rotating portion 131 and the fixing portion 132 are rotatably connected by a snap ring 133; the fixing portion 132, the rotating portion 131, and the inner housing 110 are sequentially disposed from the outside to the inner housing 110; an L-shaped sliding slot is formed at the bottom of one end of the inner sleeve 110 close to the rotating part 131; a sliding column 134 is extended from the inner wall of the rotating part 131 along the diameter direction; the rotating portion 131 drives the sliding column 134 to move at the bottom end of the L-shaped sliding groove when rotating, so that the inner rotating sleeve 130 is clamped with the inner sleeve 110, and the pedicle screw is locked. The backward-retracting distance of the inner sleeve 110 is limited by the sliding columns 134 and the L-shaped sliding grooves, so that the upper and lower sheets of the opening of the inner sleeve 110 are compressed inwards, and the pedicle screw is locked.

In this embodiment, the inner sleeve 110 has a position-limiting platform 111 disposed on a sidewall thereof adjacent to the rotating portion 131; the rotating portion 131 is elastically connected to the limiting table 111 of the inner sleeve 110 through a snap spring, and is adapted to eject the inner sleeve 110 through the snap spring when rotating to the vertical end of the L-shaped sliding groove, so as to loosen the pedicle screw. Through rotatory rotating part 131, rotate the bottom of sliding column 134L shape spout and the junction of erecting the end, through the tension of jump ring, pop out interior cover 110 to the awl pedicle screw that will lock loosens.

In this embodiment, a gasket 112 is further disposed between the clamp spring and the limiting table 111.

In this embodiment, the inner wall of the outer sleeve 120 at the end far away from the inner rotating sleeve 130 is provided with a limiting block 121;

to sum up, the utility model provides a chest lumbar vertebrae wicresoft way screw extension sleeve pipe backward. Chest lumbar vertebrae wicresoft way screw extension sleeve pipe includes: an inner sleeve, an outer sleeve and an inner rotary sleeve; the inner sleeve penetrates through the outer sleeve and then is clamped with the outer sleeve through the inner rotating sleeve; the inner rotating sleeve is rotatably connected with the inner sleeve, is rotatably connected with the inner sleeve and is suitable for retracting or pushing the inner sleeve forwards so as to lock or loosen the pedicle screw in the inner sleeve when rotating. On the one hand, the pedicle screw is prolonged, and on the other hand, the pedicle screw of different types can be replaced through rotating the inner rotating sleeve, so that the use of doctors is facilitated.

The limiting block is suitable for limiting when the outer sleeve is sleeved on the inner sleeve. In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (5)

1. The utility model provides a chest lumbar vertebrae wicresoft way screw extension sleeve pipe that goes backward which characterized in that includes:

an inner sleeve, an outer sleeve and an inner rotary sleeve;

the inner sleeve penetrates through the outer sleeve and then is clamped with the outer sleeve through the inner rotating sleeve;

the inner rotating sleeve is rotatably connected with the inner sleeve and is suitable for retracting or pushing the inner sleeve forwards so as to lock or loosen the pedicle screw in the inner sleeve when the inner rotating sleeve rotates.

2. The thoracolumbar minimally invasive posterior screw extension cannula of claim 1,

the internal rotation sleeve comprises a rotating part and a fixing part;

the fixing part is fixedly connected with the outer sleeve;

the rotating part and the fixing part are rotationally connected through a clamping ring;

the fixed part, the rotating part and the inner sleeve are sleeved from outside to inside in sequence;

the bottom of one end of the inner sleeve, which is close to the rotating part, is provided with an L-shaped sliding chute;

a sliding column extends out of the inner wall of the rotating part along the diameter direction;

the rotating part drives the sliding column to move at the bottom end of the L-shaped sliding groove when rotating, so that the inner rotating sleeve is clamped with the inner sleeve, and the pedicle screw is locked.

3. The thoracolumbar minimally invasive posterior screw extension cannula of claim 2,

the side wall of the inner sleeve, which is close to the rotating part, is provided with a limiting table;

the rotating part pass through the jump ring with the spacing platform elastic connection of endotheca, and be suitable for when rotating the perpendicular end of L shape spout, pop out the endotheca through the jump ring to loosen the nail of awl bow root.

4. The thoracolumbar minimally invasive posterior screw extension cannula of claim 3,

and a gasket is also arranged between the clamp spring and the limiting table.

5. The thoracolumbar minimally invasive posterior screw extension cannula of claim 1,

the inner wall of one end of the outer sleeve, which is far away from the inner rotating sleeve, is provided with a limiting block;

the limiting block is suitable for limiting when the outer sleeve is sleeved on the inner sleeve.

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