Working channel auxiliary device for minimally invasive lumbar surgery

Abstract

The utility model relates to the technical field of medical instruments, in particular to a working channel auxiliary device for a minimally invasive lumbar surgery. The innermost sleeve of the step-by-step sleeve is lengthened, the lengthened sleeve is directly driven into the lumbar vertebra cone gap, high-strength stability is provided, an outer fixing frame does not need to be arranged for fixing, meanwhile, it is guaranteed that the working channel and the lumbar vertebra cone gap are kept consistent in direction, the difficulty of treating the lumbar vertebra cone gap in an operation is reduced, and the operation efficiency is improved. Meanwhile, the injury risk of the segmental blood vessel is reduced to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a working channel auxiliary device for lumbar minimally invasive surgery. Background Art

[0002] Oblique lateral interbody fusion (OLIF) is an internationally popular minimally invasive technology for the lumbar spine. It was first introduced by Mayer in 1997, and it was not until 2012 that Silvestre first reported and officially named this minimally invasive technology. OLIF surgery uses the anatomical gap between the aorta / inferior vena cava (IVC) and the psoas major muscle to enter the intervertebral disc space without opening the spinal canal and without damaging the posterior muscles, ligaments and bony structures. At the same time, because enough intervertebral disc tissue can be removed, the contact area between the fusion device and the end plate is large, which can greatly increase the support strength of the fusion device. Therefore, the technology and concept of OLIF have been rapidly promoted and applied internationally.

[0003] With the widespread application of minimally invasive lumbar OLIF surgery in China, the working channel currently used in China requires the placement of step-by-step sleeves and the installation of an external fixator to continuously fix the working channel. When placing the step-by-step sleeves and the working channel, the limited strength of the Kirschner wire often causes the step-by-step sleeves and the working channel to form an angle with the intervertebral space, which not only increases the difficulty for the surgeon to handle the intervertebral space; at the same time, because the step-by-step sleeves may be biased to the cephalad or caudad side, the risk of segmental vascular injury is increased to a certain extent. Utility Model Content

[0004] The utility model provides a working channel auxiliary device for minimally invasive lumbar surgery, which is used to solve the problem in the prior art that the Kirschner wire is not strong enough and is easy to form an angle with the vertebral space to cause damage. It achieves the purpose of providing a higher strength extended sleeve to ensure that the working channel is in the same direction as the cone space to avoid damage.

[0005] The utility model provides a lumbar minimally invasive surgery working channel auxiliary device, comprising:

[0006] Step-by-step sleeve;

[0007] An extended sleeve fixedly connected to the innermost sleeve of the step-by-step sleeve;

[0008] A working channel is arranged on the outer side of the step-by-step sleeve, and the working channel is arranged parallel to the step-by-step sleeve.

[0009] According to the working channel auxiliary device for minimally invasive lumbar surgery provided by the utility model: the working channels are provided with two in total, the two working channels are axially symmetrically arranged, and the working channels are used to determine the position of the fixing nails.

[0010] According to the lumbar minimally invasive surgery working channel auxiliary device provided by the utility model: the length of the extended sleeve is 5 cm.

[0011] The beneficial effects of the utility model are:

[0012] The utility model provides a working channel auxiliary device for minimally invasive lumbar surgery. By extending the innermost sleeve of a step-by-step sleeve, the extended sleeve is directly inserted into the lumbar vertebral cone space, providing higher strength stability, and no external fixator is required for fixation. At the same time, the working channel is ensured to be consistent in direction with the lumbar vertebral space, thereby reducing the difficulty of handling the lumbar vertebral cone space during surgery and reducing the risk of segmental blood vessel damage to a certain extent.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 This is a three-dimensional structural diagram of the working channel auxiliary device for minimally invasive lumbar surgery;

[0016] Figure 2 This is a top view of a working channel assist device for minimally invasive lumbar surgery.

[0017] Reference numerals:

[0018] 1. Step-by-step sleeve; 2. Extension sleeve; 3. Working channel; 4. Kirschner wire; 5. Fixing nail. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the embodiments of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0022] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms are not directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0024] Combine the following Figure 1-2 The embodiment shown describes the technical solution of the utility model:

[0025] The utility model provides a working channel auxiliary device for lumbar minimally invasive surgery, comprising: a step-by-step sleeve 1; a lengthened sleeve 2, fixedly connected to the innermost sleeve of the step-by-step sleeve 1; and a working channel 3, arranged on the outside of the step-by-step sleeve 1, and arranged parallel to the step-by-step sleeve 1.

[0026] According to the lumbar minimally invasive surgery working channel auxiliary device provided by the utility model: a total of two working channels 3 are provided, the two working channels 3 are axially symmetrically arranged, and the working channels 3 are used to determine the position of the fixing nail 5.

[0027] According to the lumbar minimally invasive surgery working channel auxiliary device provided by the utility model: the length of the extended sleeve 2 is 5 cm.

[0028] It can be understood that in the utility model, the step-by-step sleeve 1 is sleeved on the outside of the Kirschner wire 4. The function of the step-by-step sleeve 1 is to determine the working position of the Kirschner wire 4. The step-by-step sleeve 1 is composed of a group of inner and outer sleeves with matching inner diameters. In this embodiment, one is provided with four layers of inner and outer sleeves, including an outermost sleeve, a second sleeve, a third sleeve and an innermost sleeve. The inner diameters of the above-mentioned sleeves decrease successively and cooperate with each other, and the inner diameter of the innermost sleeve is larger than the diameter of the Kirschner wire 4, which is convenient for determining the position of the Kirschner wire 4 during minimally invasive lumbar surgery.

[0029] In the utility model, the innermost sleeve of the step-by-step sleeve 1 is lengthened as the lengthened sleeve 2. In minimally invasive lumbar fusion surgery, the innermost sleeve fixedly connected with the lengthened sleeve 2 is directly inserted between the lumbar vertebrae instead of the Kirschner wire 4. The strength of the lengthened sleeve 2 is higher than that of the Kirschner wire 4, and the stability of the lengthened sleeve 2 is higher than that of the Kirschner wire 4. When installing the working channel 3, there is no need for fixation of an external fixator, thereby reducing the difficulty of the surgery.

[0030] The length of the extended sleeve 2 is 5 cm, which is adapted to the lumbar cone. After the innermost sleeve of the step-by-step sleeve 1 is driven into the lumbar vertebral body space, the other three outer sleeves of the step-by-step sleeve 1 are sequentially sleeved on the innermost sleeve.

[0031] A working channel 3 is arranged in parallel on the outside of the outermost sleeve in the step-by-step sleeve 1, and there are two working channels 3 in total. The two working channels 3 are symmetrically arranged on the outside of the outer wall of the outermost sleeve. After the innermost sleeve is driven into the cone gap, the position is fixed. The step-by-step sleeve 1 is sleeved outside the innermost sleeve to determine the positions of the two working channels 3. Because the working channels 3 are symmetrically distributed on the outer wall of the outermost sleeve, the direction of the working channel 3 is the same as that of the innermost sleeve, that is, the direction of the working channel 3 and the direction of the lumbar cone gap can be kept highly consistent, thereby reducing the difficulty of cone gap processing in lumbar minimally invasive surgery and reducing the risk of segmental blood vessels damage to a certain extent.

[0032] The utility model provides a working channel auxiliary device for lumbar minimally invasive surgery, which extends the innermost sleeve in a step-by-step sleeve 1, and fixes a 5-cm-long extension sleeve 2 at one end of the innermost sleeve, and uses the extension sleeve 2 to replace the Kirschner wire 4 to avoid the Kirschner wire 4 being insufficiently strong, thereby forming an angle between the step-by-step sleeve 1 and the working channel 3 and the lumbar vertebral cone gap. The extension sleeve 2 is driven into the lumbar vertebral cone gap to provide stronger strength and stability than the Kirschner wire 4. In the process of installing the step-by-step sleeve 1, it can also avoid that the step-by-step sleeve 1 deviates toward the needle head side or the needle tail side of the Kirschner wire 4, thereby increasing the risk of segmental blood vessel damage to a certain extent.

[0033] Directly inserting the innermost sleeve into the lumbar intervertebral space can ensure that the outer sleeve arranged on the outer wall of the innermost sleeve will not deviate from the angle, thereby reducing the difficulty of the lumbar cone space during surgery and reducing the risk of segmental blood vessel damage to a certain extent.

[0034] The lumbar minimally invasive surgery working channel auxiliary device provided by the utility model directly fixes the extended sleeve 2 to be consistent with the direction of the lumbar vertebral cone gap, so that the working channel 3 fixed on the outer wall of the outermost sleeve maintains a high degree of consistency with the direction of the cone gap, which reduces the difficulty of surgical treatment of the vertebral gap and can also reduce the risk of damage to segmental blood vessels.

[0035] The working principle of the utility model is as follows: the innermost sleeve fixedly connected with the extended sleeve is driven into the lumbar cone gap, and then the three outer sleeves are sequentially sleeved on the outside of the innermost sleeve, the outer wall of the sleeved outermost sleeve is fixedly connected with the working channel 3, and then the fixing nail 5 is nailed into the lumbar cone position through the working channel 3. The working channel 3 is consistent with the direction of the cone gap, which can reduce the difficulty of surgical treatment of the vertebral gap and reduce the risk of segmental blood vessel damage to a certain extent.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A lumbar minimally invasive surgery working channel auxiliary device, characterized in that: include: Step sleeve (1); An extended sleeve (2) fixedly connected to the innermost sleeve of the step-by-step sleeve (1); A working channel (3) is arranged on the outside of the step-by-step sleeve (1), and the working channel (3) is arranged parallel to the step-by-step sleeve (1).

2. The working channel auxiliary device for lumbar minimally invasive surgery according to claim 1, characterized in that: There are two working channels (3) in total, and the two working channels (3) are arranged axially symmetrically. The working channels (3) are used to determine the position of the fixing pin (5).

3. The working channel auxiliary device for lumbar minimally invasive surgery according to claim 1, characterized in that: The length of the extended sleeve (2) is 5 cm.

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