Spine intraspinal fracture block displacement reduction device

Abstract

The utility model relates to a displacement reduction device for a fracture block in a spinal canal. The displacement reduction device comprises a holding part, a first connecting rod, a second connecting rod and a reduction part, the reduction part comprises a correction rod, a reduction rod and an epidural mater protection rod; the middle of the reset rod is an arc bent section, and two ends are linear sections. One surface of the correcting rod is connected with the end part of the second connecting rod; the linear section end part of one end of the resetting rod is connected with the correcting rod; the convex surface of the arc bent section of the reset rod faces the holding part; the end part of the linear section at the other end of the reset rod is connected with the dura mater protection rod; and the dura mater protection rod faces the direction of the holding part. The arc bent section of the reduction rod is more attached to an irregular fracture block, and meanwhile the correction rod can better support and stabilize the fracture block to be reduced in the operation process and prevent the fracture block from deviating and rolling. By arranging the dura mater protection rod on the reduction rod, when the fracture block is reduced, the compression of the spinal cord is directly relieved, the dura mater, the spinal cord and nerves can be prevented from being damaged, and iatrogenic secondary injury to a patient is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially is related to a spinal canal fracture block displacement reduction device. BACKGROUND

[0002] Spinal burst fracture belongs to high-energy injury, is often seen in traffic accident, falling from a height injury etc., is a kind of common severe spinal injury in clinic, often accompanied by fracture block that bursts into the spinal canal compression spinal cord and causes nerve injury, needs emergency operation treatment, if fracture block cannot effectively reduce and continuously compresses spinal cord nerve, can lead to patient's limbs paralysis, weakness, dysfunction, influence patient's quality of life, bring heavy economic medical burden to family and society.The most effective method is to reduce the fracture block in the spinal canal through operation, restores normal sequence and anatomy of spinal column, and relieves the compression of spinal cord and nerve.Currently, the traditional fracture block reducer commonly used in clinic includes "C" shape reducer, right angle type reducer etc.However, when the traditional fracture block reducer presses the fracture block reduction, the fracture block is easy to deviate and roll, leading to poor reduction, and there is a risk of damaging the dura mater when entering between the fracture block and the dura mater, cannot effectively push away the hard dura mater and appears the secondary injury such as spinal cord nerve traction, cerebrospinal fluid leakage, leading to the extension of operation time, the aggravation of illness, the increase of hospitalization expenses. CONTENT OF UTILITY MODEL

[0003] In view of the problems that the fracture block is easy to deviate and roll when the fracture block reducer in the prior art is used, and cannot effectively push away the hard dura mater and appears secondary injury, the utility model provides a spinal canal fracture block displacement reduction device, which comprises a holding part, a first connecting rod, a second connecting rod and a reduction part;The reduction part comprises a correction rod, a reduction rod and a dura mater protection rod;The middle of the reduction rod is a circular arc curved section, and the two ends are straight sections;

[0004] One end of the first connecting rod is connected with the holding part, and the other end is connected with the second connecting rod;The other end of the second connecting rod is connected with the reduction part;

[0005] One side of the correction rod is connected with the end of the second connecting rod, the end of the straight section of one end of the reduction rod is connected with the end of the correction rod, and the included angle between them is 150-170 degrees;The convex surface of the circular arc curved section of the reduction rod faces the direction of the holding part;The end of the straight section of the other end of the reduction rod is connected with the dura mater protection rod, and the included angle between them is 80-90 degrees, and the dura mater protection rod faces the direction of the holding part.

[0006] Further, the surface of the holding part is frosted, and uniform anti-skid lines are arranged on the frosted surface.

[0007] Further, the included angle between the first connecting rod and the second connecting rod is 150-160 degrees.

[0008] Further, the end of the reset part is smooth round angle, and the thickness of the reset part is 3-8mm.

[0009] Further, the contact fracture block surface of the reset rod is provided with anti-skid convex points, and the length of the reset rod is 2-3mm.

[0010] Further, the contact fracture block surface of the reset rod is provided with anti-skid convex points, and the length of the reset rod is 3-5mm.

[0011] Further, the length of the dura mater protection rod is 1-3mm.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] By setting the circular arc bending section on the reset rod, the irregular fracture block is more fitted, and the reset rod is provided with the correction rod, so that the fracture block to be reset can be better supported and stabilized during the operation process, and deviation and rolling of the fracture block can be prevented, and the displacement reset of the spinal canal fracture block in multiple directions, multiple angles and multiple depths can be met. The reset device can realize unilateral lamina window operation on the same side and the opposite side, so that the structure damage to the injured vertebra can be reduced, and the stability of the spine can be maintained. The fracture block displacement reset device is mainly applied to the posterior operation of the spinal burst fracture, the dura mater protection rod is arranged on the reset rod, the fracture block is reset, and the compression of the spinal cord is directly released, so that the dura mater, the spinal cord and the nerve can be avoided from being damaged, the iatrogenic secondary injury to the patient can be avoided, the operation risk is reduced, and the operation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front view of the spinal canal fracture block displacement reset device of the utility model;

[0015] Figure 2 It is a front view of the spinal canal fracture block displacement reset device of the utility model; Figure 1 It is a front view of the spinal canal fracture block displacement reset device of the utility model;

[0016] In the figure: 1, holding part; 11, anti-skid line; 2, first connecting rod; 3, second connecting rod; 4, reset part; 41, correction rod; 42, reset rod; 43, dura mater protection rod. DETAILED DESCRIPTION

[0017] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0018] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. The terms "upper", "lower", "front", "back", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or parts referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. It should be understood that the data thus used can be interchanged under appropriate circumstances, in order to describe the embodiments of the present application described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0019] A kind of spinal intravertebral fracture block displacement reduction device, including holding part 1, first connecting rod 2, second connecting rod 3 and reduction part 4;Reduction part 4 includes correction rod 41, reduction rod 42 and dura mater protection rod 43;Reduction rod 42 middle is circular arc curved section, both ends are straight line section.

[0020] One end of first connecting rod 2 is connected with holding part 1, the other end is connected with second connecting rod 3;The other end of second connecting rod 3 is connected with reduction part 4.

[0021] One side of correction rod 41 is connected with the end of second connecting rod 3, the end of straight line section of one end of reduction rod 42 is connected with the end of correction rod 41, and the included angle of the two is 150-170 degrees. The convex surface of the circular arc curved section of reduction rod 42 faces the direction of holding part 1. The end of straight line section of the other end of reduction rod 42 is connected with dura mater protection rod 43, and the included angle of the two is 80-90 degrees, and dura mater protection rod 43 faces the direction of holding part 1.

[0022] Through correction rod 41 and reduction rod 42 with circular arc curved section, more fit the concave-convex edge of free fracture block, and can better stabilize the fracture block during reduction, prevent it from rolling and deviating. At the same time, by setting dura mater protection rod 43, the compression of spinal cord can be directly released while reducing the fracture block, avoiding damage to dura mater, spinal cord and nerves, and avoiding iatrogenic secondary injury to patients.

[0023] When the user performs the surgical operation, according to the position and size of the preoperative patient spinal fracture block moved into the vertebral canal, one hand tightly holds the holding part 1, the reduction part 4 touches the displaced fracture block and moves it below the reduction part 4, the dural sac protection rod 43 gently pushes away the dura mater and nerve root around the fracture block, and the correction rod 41 and the reduction rod 42 with a circular arc bending section gently press the fixed fracture block, and the other hand holds the metal hammer to hammer the top end of the holding part 1, so that the force is transmitted to the reduction part 4, and the free fracture block is reset into the vertebral body.

[0024] In order to facilitate the user to operate the holding part 1 with one hand, increase the friction of the instrument device, prevent swinging and falling during use, and avoid damaging the spinal cord and nerves by the reduction part 4, the surface of the holding part 1 is a frosted surface, and uniform anti-skid lines 11 are arranged on the frosted surface.

[0025] In order to ensure that the hand-held end does not block the operating line of sight during the operation, the included angle of the first connecting rod 2 and the second connecting rod 3 is 150-160 degrees, which can meet the requirements of displacement and reduction of the fracture block in the spinal canal in multiple directions, multiple angles and multiple depths, and unilateral laminectomy operation on the same side and the opposite side, so that the structure damage to the injured vertebrae is reduced, and the stability of the spine is maintained.

[0026] The end of the reduction part 4 is a smooth round corner, which can prevent the end of the right angle from damaging the dural sac and nerve root. The thickness of the reduction part 4 is 3-8 mm.

[0027] The contact fracture block surface of the correction rod 41 is provided with anti-skid convex points, and the length of the correction rod 41 is 2-3 mm. The contact fracture block surface of the reduction rod 42 is provided with anti-skid convex points, and the length of the reduction rod 42 is 3-5 mm. The anti-skid convex points can further increase the friction between the reduction part 4 and the fracture block, and prevent the rolling of the fracture block.

[0028] Preferably, the length of the dural sac protection rod 43 is 1-3 mm.

[0029] The above only describes the preferred embodiments of the present application, and does not limit the scope of the application. It should be noted that for ordinary technicians in the technical field, without departing from the technical principles of the present application, a number of improvements and modifications can be made, which should be covered within the protection scope of the present application.

Claims

1. A device for repositioning and reducing intraspinal fracture fragments of the spine, characterized in that, It includes a gripping part (1), a first connecting rod (2), a second connecting rod (3), and a reset part (4); the reset part (4) includes a correction rod (41), a reset rod (42), and a dura mater protection rod (43); the reset rod (42) has an arc-shaped curved section in the middle and straight sections at both ends; One end of the first connecting rod (2) is connected to the gripping part (1), and the other end is connected to the second connecting rod (3); the other end of the second connecting rod (3) is connected to the reset part (4); One side of the corrective rod (41) is connected to the end of the second connecting rod (3), and the straight section of one end of the reset rod (42) is connected to the end of the corrective rod (41), with an included angle of 150 to 170 degrees; the convex surface of the arc-shaped section of the reset rod (42) faces the gripping part (1); the straight section of the other end of the reset rod (42) is connected to the dura mater protection rod (43), with an included angle of 80 to 90 degrees, and the dura mater protection rod (43) faces the gripping part (1).

2. The spinal canal fracture fragment displacement and reduction device according to claim 1, characterized in that, The surface of the grip (1) is a frosted surface, and uniform anti-slip textures (11) are provided on the frosted surface.

3. The spinal canal fracture fragment displacement and reduction device according to claim 1, characterized in that, The included angle between the first connecting rod (2) and the second connecting rod (3) is 150 to 160 degrees.

4. The spinal canal fracture fragment displacement and reduction device according to claim 1, characterized in that, The ends of the reset part (4) are all smooth rounded corners, and the thickness of the reset part (4) is 3 to 8 mm.

5. The spinal canal fracture fragment displacement and reduction device according to claim 1, characterized in that, The corrective rod (41) has anti-slip protrusions on the contact surface of the fracture fragment, and the length of the corrective rod (41) is 2-3 mm.

6. The spinal canal fracture fragment displacement and reduction device according to claim 1, characterized in that, The repositioning rod (42) has anti-slip protrusions on the contact surface of the fracture fragment, and the length of the repositioning rod (42) is 3-5 mm.

7. The spinal canal fracture fragment displacement and reduction device according to claim 1, characterized in that, The length of the dura mater protection rod (43) is 1 to 3 mm.

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