CN115715698A - Pedicle puncture auxiliary adjusting device and method - Google Patents

Abstract

The invention relates to the technical field of medical instruments, in particular to a pedicle of vertebral arch puncture auxiliary adjusting device and a method, comprising an outer sleeve, wherein a first guide hole and a second guide hole are axially and eccentrically arranged, the first guide hole penetrates into a first puncture needle matched with the first guide hole, and the first guide hole and the first puncture needle can rotate relatively; the inner sleeve penetrates through the second guide hole and is in running fit with the second guide hole, a third guide hole for penetrating a second puncture needle is axially and eccentrically arranged on the inner sleeve, and the distance between the first puncture needle and the second puncture needle is adjusted by rotating the inner sleeve; under the rotation regulation of the inner sleeve and the outer sleeve, the angle and the distance of the second puncture needle relative to the first puncture needle meet the requirements, and the optimal nail placing position is obtained.

Description

Pedicle puncture auxiliary adjusting device and method

Technical Field

The invention relates to the technical field of medical instruments, in particular to a pedicle puncture auxiliary adjusting device and method.

Background

Percutaneous spinal pedicle screw internal fixation is a common surgical approach to maintaining spinal stabilization in spinal surgery. When the nail is placed, firstly, a puncture needle and a guide wire are adopted to perform pedicle puncture positioning so as to determine the optimal nail placement position.

The existing percutaneous pedicle of vertebral arch puncture technology needs the bare-handed operation of medical staff, and the body surface projection of the pedicle of vertebral arch is determined through perspective. However, in practical operation, deviation of the needle insertion point in different directions often occurs in orthoscopic fluoroscopy, and particularly for patients with severe hyperplasia at the zygapophyseal joint, the puncture needle is easy to slip during puncture. To adjust the positioning deviation, the puncture position and puncture path need to be reexamined and changed, but a plurality of problems exist. On one hand, because the lane change is difficult due to small deviation (the deviation is only 1-5 mm), the ideal state can be reached after multiple times, and the complications related to puncture are easily caused; on the other hand, repeated fluoroscopy is needed for multiple times of puncture, and irreparable harm may be caused to patients and doctors due to the fact that rays are harmful to human bodies greatly.

Disclosure of Invention

The invention aims to provide a pedicle puncture auxiliary adjusting device and method, and aims to solve the problem that the existing pedicle puncture positioning is not easy to adjust after deviation occurs. In order to achieve the above object, the present invention is achieved by the following technical solutions:

in a first aspect, the present invention provides a pedicle penetration assisting adjustment device, comprising:

the outer sleeve is axially and eccentrically provided with a first guide hole and a second guide hole, the first guide hole penetrates through a first puncture needle matched with the first guide hole, and the first guide hole and the first puncture needle can rotate relatively;

and the inner sleeve penetrates into the second guide hole and is in running fit with the second guide hole, a third guide hole for penetrating the second puncture needle is axially and eccentrically arranged on the inner sleeve, and the distance between the first puncture needle and the second puncture needle is adjusted by rotating the inner sleeve.

As a further technical scheme, a limiting structure is arranged between the inner sleeve and the second guide hole.

As a further technical scheme, the limiting structure is a type matching structure.

As a further technical scheme, the second guiding hole is equipped with the internal tooth, be equipped with on the inner skleeve with internal tooth complex external tooth, the internal tooth with the external tooth forms limit structure.

As a further technical scheme, the internal teeth are arranged at the end part of the outer sleeve, and the inner diameter of the internal teeth is larger than that of the second guide hole.

As a further technical solution, a first guide portion is provided at an end of the outer sleeve, the first guide hole penetrates through the first guide portion, and an outer diameter of the first guide portion is smaller than that of the outer sleeve.

As a further technical solution, a second guiding portion is provided at an end of the inner sleeve, the third guiding hole penetrates through the second guiding portion, and an outer diameter of the second guiding portion is smaller than that of the inner sleeve.

As a further technical solution, the first guiding part and the second guiding part are respectively arranged at opposite ends of the limiting structure.

As a further technical scheme, the circle centers of the first guide hole and the second guide hole are on the same diameter.

In a second aspect, the adjusting method of the pedicle penetration adjusting device according to the first aspect comprises the following steps:

after the first puncture, a first puncture needle is penetrated to position the outer sleeve, and the outer sleeve is used as a reference;

according to the perspective result, the outer sleeve and the inner sleeve are rotationally adjusted, so that the third guide hole of the inner sleeve is rotated to a required ideal puncture position, the second puncture needle penetrates through the third guide hole, and the position where the second puncture needle is located is the optimal nail placement position.

The beneficial effects of the invention are as follows:

(1) According to the invention, a positioning reference is formed after the outer sleeve and the first puncture needle are punctured, the outer sleeve can rotate around the first puncture needle, the inner sleeve can be driven to move together during rotation, meanwhile, due to the eccentric arrangement of the third guide hole in the inner sleeve, the distance between the central axis of the third guide hole and the central axis of the first guide hole, namely the distance between the first puncture needle and the second puncture needle, can be adjusted in the rotation relative to the outer sleeve, and under the rotation adjustment of the inner sleeve and the outer sleeve, the angle and the distance between the second puncture needle and the first puncture needle both meet the requirements, and the optimal nail placing position is obtained.

(2) The invention is provided with the limiting structure, and after the rotation adjustment of the inner sleeve and the outer sleeve is finished, the penetrating second puncture needle can be limited, so that the second puncture needle is prevented from relatively rotating relative to the third guide hole, and the stability after the penetration is ensured.

(3) The auxiliary adjusting device for the pedicle of vertebral arch puncture can be used for the fine adjustment process of the pedicle of vertebral arch puncture, and also can be used for the fine adjustment puncture process of all orthopedic related punctures, such as the fine adjustment process of the puncture under a spinal endoscope and the fine adjustment process of orthopedic biopsy; the diameter of the puncture hole in the inner sleeve and the outer sleeve is enlarged, so that the puncture needle can penetrate through the puncture hole, and the puncture needle can be applied to patients who are difficult to puncture and place the nail under the open condition.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the invention and not to limit the invention. It will be further appreciated that the figures are for simplicity and clarity and have not necessarily been drawn to scale. The invention will now be described and explained with additional specificity and detail through the use of the accompanying drawings in which:

FIG. 1 shows a schematic front view of an embodiment of an outer sleeve according to the invention;

FIG. 2 shows a schematic side view of an embodiment of the outer sleeve according to the invention;

FIG. 3 shows a schematic front view of an inner sleeve structure in an embodiment of the invention;

figure 4 shows a schematic side view of an inner sleeve structure in an embodiment of the invention.

In the figure: 1. an outer sleeve; 2. a first guide hole; 3. a first guide portion; 4. a second guide hole; 5. internal teeth; 6. an inner sleeve; 7. an outer tooth; 8. a third guide hole; 9. a second guide portion.

Detailed Description

The technical solutions in the exemplary embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

Example one

As shown in fig. 1 to 4, the present embodiment provides a pedicle penetration assisting adjustment device, which comprises an outer sleeve 1, an inner sleeve 6, and a first puncture needle and a second puncture needle penetrating therethrough.

As shown in figures 1 and 2, a first guide hole 2 and a second guide hole 4 are axially and eccentrically arranged on an outer sleeve 1, and the first guide hole 2 penetrates into a first puncture needle matched with the first guide hole and can rotate relatively.

As shown in FIGS. 3 and 4, the inner sleeve 6 is inserted into the second guide hole 4 and is rotatably fitted thereto, the inner sleeve 6 is axially eccentrically provided with a third guide hole 8 for inserting the second piercing needle, and the distance between the first piercing needle and the second piercing needle is adjusted by rotating the inner sleeve 6.

The embodiment is designed mainly for the process that the puncture point and the puncture path are not ideal for the first time and the puncture channel needs to be finely adjusted. With the first puncture path as a reference, a desired puncture effect is achieved with the aid of the adjustment device of the present embodiment.

The outer sleeve 1 and the first puncture needle form a positioning reference after puncture, the outer sleeve 1 can rotate around the first puncture needle, the inner sleeve 6 can be driven to move together during rotation, meanwhile, due to the eccentric arrangement of the third guide hole 8 in the inner sleeve 6, the distance between the central axis of the third guide hole 8 and the central axis of the first guide hole 2 can be adjusted in the rotation relative to the outer sleeve 1, namely, the distance between the first puncture needle and the second puncture needle is adjusted, and under the rotation adjustment of the inner sleeve 6 and the outer sleeve 1, the angle and the distance of the second puncture needle relative to the first puncture needle meet requirements, and the optimal nail placing position is obtained. The angle refers to the position angle of the connecting line of the two puncture needles on the adjusting plane, in addition, the adjusting distance is completed by rotating the inner sleeve, the adjusting angle can be completed by the outer sleeve and/or the inner sleeve (the angle of the inner sleeve is also adjusted in the process of rotating the adjusting distance), but the outer sleeve is mainly used.

But more, the distance between two puncture needles is adjusted by rotating the inner sleeve, and the angle is adjusted by rotating the outer sleeve.

The first puncture needle is used for positioning accurately, the inner sleeve and the outer sleeve can be fixed when penetrating into the second puncture needle, the second puncture needle is prevented from sliding and shifting again, and stable and accurate positioning is guaranteed.

The circle centers of the first guide hole 2 and the second guide hole 4 are on the same diameter, so that the distance adjusting range of the two puncture needles can be expanded, the distance adjusting range is set to be 1-5 mm in order to meet requirements, and any distance in the adjusting range can be obtained.

A limiting structure is arranged between the inner sleeve 6 and the second guide hole 4, and the limiting structure is a type matching structure.

Set up limit structure, inside and outside sleeve rotation regulation finishes the back, can carry on spacingly to the second pjncture needle that penetrates, avoids the second pjncture needle to take place relative rotation for the third guiding hole, ensures the stability after penetrating.

In the embodiment, the second guide hole 4 is provided with inner teeth 5, the inner sleeve 6 is provided with outer teeth 7 matched with the inner teeth 5, and the inner teeth 5 and the outer teeth 7 form a limiting structure. In other embodiments, the design may also be quadrilateral, octagonal, dodecagonal, etc., and is not limited to the tooth-shaped matching structure in this embodiment.

In this embodiment, the first guide portion 3 and the second guide portion 9 are located at the same end and are disposed at opposite ends from the limiting structure, i.e., the first guide portion 3 and the second guide portion 9 are at one end and the limiting structure is at the other end.

The inner teeth 5 are arranged at the end part of the outer sleeve 1, the inner diameter is larger than the second guide hole 4, equivalently, the inner teeth 5 and the second guide hole 4 form a step structure, and the second puncture needle is limited by the step structure after being inserted into a certain depth.

The end part of the outer sleeve 1 is provided with a first guide part 3, the first guide hole 2 penetrates through the first guide part 3, and the outer diameter of the first guide part 3 is smaller than that of the outer sleeve 1. The end of the inner sleeve 6 is provided with a second guiding part 9, the third guiding hole 8 penetrates through the second guiding part 9, and the outer diameter of the second guiding part 9 is smaller than that of the inner sleeve 6. To facilitate the puncture, the first guide part 3 and the second guide part 9 are provided to guide the puncture needle.

Example two

The embodiment provides an adjusting method of the pedicle penetration adjusting device, which is characterized by comprising the following steps:

after the first puncture, a first puncture needle is penetrated to position the outer sleeve 1, and the first puncture needle is used as a reference;

according to the perspective result, the outer sleeve 1 and the inner sleeve 6 are rotationally adjusted, so that the third guide hole 8 of the inner sleeve 6 is rotated to a required ideal puncture position (the angle and the distance between the two puncture needles meet the requirements), the second puncture needle penetrates through the third guide hole 8, and the position where the second puncture needle is located is the optimal nail placement position.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.

Claims (10)

1. A pedicle puncture auxiliary adjusting device is characterized by comprising:

the outer sleeve is axially and eccentrically provided with a first guide hole and a second guide hole, the first guide hole penetrates through a first puncture needle matched with the first guide hole, and the first guide hole and the first puncture needle can rotate relatively;

the inner sleeve penetrates through the second guide hole and is in running fit with the second guide hole, a third guide hole used for penetrating the second puncture needle is axially and eccentrically arranged on the inner sleeve, and the distance between the first puncture needle and the second puncture needle is adjusted by rotating the inner sleeve.

2. A pedicle penetration assisting adjustment device as claimed in claim 1, wherein a limiting structure is provided between the inner sleeve and the second guiding hole.

3. A pedicle penetration assisting adjustment device as claimed in claim 2, wherein the limiting structure is a positive-type engagement structure.

4. The pedicle puncture auxiliary adjusting device according to claim 3, wherein the second guide hole is provided with inner teeth, the inner sleeve is provided with outer teeth matched with the inner teeth, and the inner teeth and the outer teeth form the limiting structure.

5. A pedicle penetration assisting adjustment device as claimed in claim 4, wherein the inner teeth are provided at the end of the outer sleeve, and have an inner diameter larger than the second guiding hole.

6. A pedicle penetration assisting adjustment device as claimed in claim 2, wherein the end of the outer sleeve is provided with a first guide portion, the first guide hole extends through the first guide portion, and the outer diameter of the first guide portion is smaller than that of the outer sleeve.

7. A pedicle penetration assisting adjustment device as claimed in claim 6, wherein the end of the inner sleeve is provided with a second guide portion, the third guide hole extends through the second guide portion, and the outer diameter of the second guide portion is smaller than that of the inner sleeve.

8. A pedicle penetration assisting adjustment device as claimed in claim 7, wherein the first and second guides are provided at opposite ends from the stop formation.

9. A pedicle penetration assisting adjustment device as claimed in claim 1, wherein the first guide hole and the second guide hole are centered on the same diameter.

10. The method of adjusting a pedicle penetration adjusting device according to any one of claims 1-9, comprising the steps of:

after the first puncture, a first puncture needle is penetrated to position the outer sleeve, and the outer sleeve is used as a reference;

according to the perspective result, the outer sleeve and the inner sleeve are rotationally adjusted, so that the third guide hole of the inner sleeve is rotated to a required ideal puncture position, the second puncture needle penetrates through the third guide hole, and the position where the second puncture needle is located is the optimal nail placement position.

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