CN219230094U - Pedicle screw entry point positioning device - Google Patents

Abstract

The utility model discloses a pedicle screw entry point positioning device; comprises an anti-lost traction rope and a positioning ball which can be developed under the perspective of a C-shaped arm X-ray machine; the anti-lost traction rope is fixedly connected with the positioning ball. The effect is as follows: when the vertebral pedicle screw positioning device is used, the positioning ball is placed in the pit ground on the surface of the inlet bone which is anatomically positioned on the outer cortex of the vertebral pedicle of the patient, does not penetrate into the vertebral pedicle of the patient, does not hurt the four walls of the vertebral pedicle of the patient, does not hurt the tissues such as spinal cord and nerve root, is safe and reliable to use, the placing size of the positioning ball is matched with that of the pit, the positioning ball is placed firmly, is not easy to shake, can greatly reduce the positioning difficulty, and can quickly position the entry point of the vertebral pedicle screw when the vertebral operation is performed on the patient, related operation can be quickly and efficiently completed in a short time, the positioning ball is pulled by the anti-lost pulling rope, no matter the positioning ball is placed or taken out, the positioning ball is not easy to lose, and the use is more reliable.

Description

Pedicle screw entry point positioning device

Technical Field

The utility model relates to the technical field of medical nursing products, in particular to a pedicle screw entry point positioning device.

Background

The spine is an important skeletal organ of a human body, not only supports the body of the human body, but also better buffers the pressure and vibration of the body, and when a patient suffers from a spine lesion, a lot of diseases are caused, so that surgical treatment is indispensable.

In the field of worldwide spinal surgery, the pedicle screw internal fixation technique is the most common and practical technique in spinal surgery, and is widely used for treating various scoliosis, various deformities, wounds, tumors and retrogressions. Accurate placement of the staples is critical to the success of the procedure, provided that the entrance to the staple is accurately found. Namely, in the first step of implanting the pedicle screw, an entrance of the screw is found, and a doctor is required to accurately find the entrance point of the pedicle screw and accurately establish the pedicle screw channel, so that the pedicle screw can be safely and accurately implanted into the vertebral body.

The traditional method for positioning the entry point of the pedicle screw comprises the steps of driving a Kirschner wire into the entry point of anatomical positioning, and in specific implementation, the Kirschner wire to be used is directly hammered into the inside of the vertebral pedicle of a patient through the previously found entry point of the pedicle screw at the conventional anatomical positioning needle position of the pedicle screw on the surface of the outer cortical bone of the vertebral pedicle of the patient in advance, then, the penetration position of the Kirschner wire used by the X-ray machine of the C-arm is used, after the penetration position is determined to be correct, the Kirschner wire is pulled out, and the pedicle screw channel is continuously opened into the vertebral pedicle of the patient under the X-ray machine of the C-arm by using tools such as a pedicle inner channel probe, after the pedicle screw channel is established in the vertebral pedicle of the patient, the pedicle screw to be used can be directly hammered into the opened vertebral pedicle screw channel so as to perform internal fixation operation on the vertebral pedicle of the patient, when the penetration position of the vertebral pedicle screw is determined to be deviated, the pedicle screw is also required to be pulled out, the pedicle screw is required to be screwed into the pedicle screw into the conventional positioning needle position of the vertebral pedicle on the surface of the outer cortical bone of the vertebral pedicle of the patient, and the pedicle screw is repeatedly used for positioning the pedicle screw at the conventional anatomical position of the pedicle screw on the surface of the vertebral pedicle of the surface of the vertebral pedicle of the patient in advance.

Although the positioning of the pedicle screw entry point is widely used, the inventor of the patent is used as a child orthopedics doctor in a hospital, and the main knife is subjected to numerous times of spinal operations, so that the use of the Kirschner wire has certain defects and defects.

Specifically, on one hand, the Kirschner wire is invasive, and when the Kirschner wire is pricked into the pedicle of the patient to a certain depth, the Kirschner wire is slightly careless, so that the four walls of the pedicle of the patient can be injured, and the tissue such as internal blood vessels, spinal cord and nerve roots can be injured when the Kirschner wire is pricked too deeply; on the other hand, the Kirschner wire has a longer length, and only a small part of the end part of the Kirschner wire is pricked into the pedicle of the vertebral arch of the patient to a certain depth, so that the Kirschner wire is not very stable in fixation, and is easy to shake and unstable in the process of positioning the pricking position, so that the positioning difficulty is increased.

In this regard, the present inventors have combined clinical experience, and have turned through a great deal of scientific research data and documents about technical difficulties encountered in clinical work, and have conducted search analysis through the website of the national intellectual property office, and gradually conceived and designed the present application, so as to solve the relevant technical problems, and the present application has remarkable effects in practical use.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. To this end, the object of the present utility model is to propose a pedicle screw entry point positioning device.

In order to achieve the above purpose, the pedicle screw entry point positioning device according to the embodiment of the utility model comprises an anti-lost traction rope and a positioning ball which can be developed under the perspective of a C-shaped arm X-ray machine; the anti-lost traction rope is fixedly connected with the positioning ball.

In addition, the pedicle screw entry point positioning device according to the above-described embodiment of the utility model may also have the following additional technical features:

according to one embodiment of the utility model, the outer surface of the positioning ball is externally connected with a tiny tightening ring, and the anti-lost traction rope is arranged on the tiny tightening ring in a penetrating mode.

According to one embodiment of the utility model, the outer surface of the positioning ball is provided with an anti-slip member which can penetrate into cortical bone on the outer layer of the projection surface of the vertebral arch.

According to one embodiment of the utility model, the anti-slipping component is a plurality of anti-slipping pointed cones which are uniformly and convexly arranged on the outer surface of the positioning ball outwards.

According to one embodiment of the utility model, the anti-falling component is a plurality of anti-falling convex blocks which are uniformly and outwards protruded on the outer surface of the positioning ball.

According to one embodiment of the utility model, the positioning ball has an outer diameter D, d=2.0 mm-6.0mm.

According to one embodiment of the utility model, the outer diameter D of the positioning ball is 3.0mm, 4.5mm or 5.0mm.

According to one embodiment of the utility model, the positioning ball is made of stainless steel or titanium alloy.

According to one embodiment of the utility model, the anti-lost traction rope is not pure red in color.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall construction of a pedicle screw entry point positioning device of the utility model, in one embodiment;

FIG. 2 is an exploded view of the pedicle screw entry point positioning device of the utility model, in one embodiment;

FIG. 3 is a schematic view of the overall construction of a pedicle screw entry point positioning device of the utility model, in another embodiment;

FIG. 4 is an exploded view of another embodiment of the pedicle screw entry point positioning device of the utility model;

FIG. 5 is an enlarged view of the detent ball in another embodiment;

reference numerals:

pedicle screw entry point positioning device 1000;

an anti-lost traction rope 10;

pulling the ring 101;

a positioning ball 20;

a minute tightening ring 201;

an anti-drop tip 202;

an annular anti-slip groove 2021;

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present utility model and should not be construed as limiting the utility model, and all other embodiments, based on the embodiments of the present utility model, which may be obtained by persons of ordinary skill in the art without inventive effort, are within the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings of the specification are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The pedicle screw entry point positioning device 1000 of an embodiment of the utility model is described in detail below with reference to the drawings.

Referring to fig. 1 to 5, a pedicle screw entry point positioning device 1000 according to an embodiment of the utility model includes an anti-lost tow rope 10 and a positioning ball 20 that is developable under the perspective of a C-arm X-ray machine; the anti-lost traction rope 10 is fixedly connected with the positioning ball 20, and the anti-lost traction rope 10 is made of a non-metal material and is preferably a medical suture.

Based on the foregoing, it will be appreciated that the present application, when embodied, is intended primarily for use as a pedicle screw entry point positioning device 1000.

Specifically, when the application is applied, the needle-inserting position of the conventional anatomical positioning pedicle screw on the outer cortex surface of the vertebral pedicle of the patient is found in advance, a pit with a certain depth is ground at the corresponding found pedicle screw-inserting point by using tools such as grinding drills, the corresponding ground pit depth is approximately 3.0mm, then, the positioning ball 20 can be placed in the corresponding pit, the subsequent positioning ball 20 is seen through the C-shaped arm X-ray machine, when the placing position of the positioning ball 20 is determined manually through development, the positioning ball 20 is taken out, the pedicle screw channel is continuously formed inside the vertebral pedicle screw channel of the patient from the correct positioning position by using tools such as a pedicle inner channel finder under the C-shaped arm X-ray machine, the pedicle screw to be used can be screwed into the formed pedicle screw channel, so that the patient is fixed internally, when the placing position of the vertebral pedicle screw is found manually, the pedicle screw is taken out from the same vertebral pedicle screw-inserting position of the patient, and the vertebral pedicle screw is located on the outer cortex surface of the patient by manually determining the positioning ball 20, and the conventional anatomical positioning pedicle screw is taken out on the surface of the vertebral pedicle screw of the patient.

For the above operations, it can be summarized that:

on the one hand, when the positioning ball 20 is specifically used, the positioning ball is placed in the corresponding ground concave pit, the corresponding concave pit is positioned on the surface of the outer cortical bone of the vertebral pedicle of the patient, and does not penetrate into the vertebral pedicle of the patient, so that the positioning ball 20 does not hurt four walls of the vertebral pedicle of the patient, and the tissues such as spinal cord and nerve root are not hurt, so that the positioning ball is safe and reliable to use.

On the other hand, the positioning ball 20 is placed in the corresponding ground pit, and the size of the positioning ball is matched with that of the corresponding ground pit, so that the positioning ball is stable to place and is not easy to shake, and the positioning difficulty can be greatly reduced, so that the positioning ball is easy to control.

In view of the above two aspects, whether it is a practice doctor, a doctor with insufficient experience, or a doctor with abundant experience, the positioning ball 20 according to the present application can easily position the entry point of the pedicle screw of the spine of the patient when performing the spine surgery on the patient, so that the related surgery can be completed quickly, efficiently and safely in a short time.

Moreover, because the anti-lost traction rope 10 is further provided in the present application, and during actual use, the outer diameter of the positioning ball 20 is very small, generally about 4.0mm, so that when the present application is used, the end of the anti-lost traction rope 10 is exposed to the operation wound, even if the positioning ball 20 falls down during clamping when being placed in the corresponding ground pit, the positioning ball 20 is also relatively easy to quickly find out the anti-lost traction rope 10 by pulling the anti-lost traction rope 10, so that the positioning ball is difficult to be found by being left in a patient, and after the positioning ball 20 is used up, the positioning ball can be quickly taken out by pulling the anti-lost traction rope 10, so that the positioning ball is also difficult to be left in the patient, and the whole use formed by the present application is also safer and more reliable.

Furthermore, the application has strong practicability and good use effect.

Further, in a specific implementation, according to an embodiment of the present utility model, a tiny tightening ring 201 suitable for clamping is connected to the outer surface of the positioning ball 20, and the anti-lost traction rope 10 is threaded through the tiny tightening ring 201, specifically, as shown in fig. 1 and 2.

Therefore, the small tightening ring 201 is convenient for the anti-lost traction rope 10 to be worn, so that the anti-lost traction rope 10 and the positioning ball 20 are firmly connected and are not easy to be taken off, and the small tightening ring 201 is also convenient for the medical forceps to be clamped, so that the positioning ball 20 is placed in the corresponding ground pit.

Still further, in practice, the outer surface of the positioning ball 20 is provided with an anti-slip member that can penetrate the cortical bone of the outer layer of the projection surface of the spinal arch, in accordance with one embodiment of the present utility model.

Therefore, through setting up the anti-slipping component, even make when will locating ball 20 rest to patient's vertebra pedicle of vertebral arch outer cortex bone surface grind corresponding pit in, the anti-slipping component can pierce patient's vertebra pedicle of vertebral arch outer cortex bone for locating ball 20 is difficult for the slippage after resting to patient's vertebra pedicle of vertebral arch outer cortex bone surface grind corresponding pit, makes this application overall use effect more excellent.

Preferably, in an embodiment, according to an embodiment of the present utility model, the anti-slip member is a plurality of anti-slip cones 202 protruding uniformly outwards on the outer surface of the positioning ball 20, specifically, referring to fig. 3, 4 and 5.

Therefore, after the anti-falling sharp cones 202 penetrate into the outer cortical bone of the vertebral pedicle of the patient, the positioning ball 20 is placed on the corresponding pits ground on the surface of the outer cortical bone of the vertebral pedicle of the patient, the positioning ball is placed more firmly and is not easy to slip, and meanwhile, the anti-falling sharp cones 202 are formed into sharp shapes, so that the positioning ball is beneficial to easily penetrate into the outer cortical bone of the vertebral pedicle of the patient, and the positioning ball is labor-saving to place.

Preferably, in this embodiment, the outer diameters of the plurality of the anti-falling sharp cones 202 gradually decrease from the connection end to the end thereof, the middle positions of the outer walls of the plurality of the anti-falling sharp cones 202 are respectively cut inwards to form an annular anti-falling clamping groove 2021, and the inner diameter of each annular anti-falling clamping groove 2021 gradually increases from the connection end of the corresponding anti-falling sharp cone 202 to the end of the corresponding anti-falling sharp cone 202.

Therefore, by arranging the annular anti-drop clamping groove 2021 with a corresponding structure, the positioning ball 20 can be better pulled by the outer cortical bone of the vertebral pedicle of the patient after being embedded into the outer cortical bone of the vertebral pedicle of the patient, so that the positioning ball is more stable and not easy to drop after being placed on the corresponding pit ground on the surface of the outer cortical bone of the vertebral pedicle of the patient.

It should be noted that, the length of the plurality of the anti-falling tapers 202 is not easy to be too long, and the length is smaller than the radius of the positioning ball 20.

Also, in another embodiment, the plurality of the anti-falling cones 202 may be replaced with anti-falling protrusions (not shown) that are not sharp enough, which also facilitate the stable placement of the positioning ball 20 when the positioning ball is clamped into the corresponding ground pits.

Further, in practice, according to one embodiment of the present utility model, the outer diameter of the positioning ball 20 is D, where d=2.0 mm-6.0mm.

Preferably, according to one embodiment of the present utility model, the outer diameter D of the positioning ball 20 is 3.0mm, 4.5mm or 5.0mm.

It should be noted that, for patients of different ages, the thickness of the outer cortical bone of the vertebral arch projection surface is different, and the smaller the age, the smaller the thickness of the outer cortical bone of the vertebral arch projection surface is.

Therefore, in the present application, the positioning ball 20 is set to be suitable for positioning the pedicle screw entry point for patients within 5 years old, when the outer diameter D of the positioning ball is 3.0 mm; the positioning ball 20 has an outer diameter D of 4.5mm and is configured to be suitable for positioning the pedicle screw entry point for patients aged 5-10 years; the positioning ball 20 is set to be suitable for positioning the pedicle screw entry point for patients over 10 years old, when the outer diameter D of the positioning ball is 5.0mm.

Furthermore, in the present embodiment, according to the present utility model, the positioning ball 20 is made of stainless steel or titanium alloy, and the fastening ring and the anti-slip member provided on the outer surface thereof are integrally formed with the positioning ball and made of stainless steel or titanium alloy, so that the positioning ball has high average hardness and is corrosion-resistant, so that the positioning ball can be reused after cleaning, sterilization and disinfection.

It should be noted that, the positioning ball 20 is made of stainless steel or titanium alloy, so that it is corrosion-resistant and has good usability.

Also, it should be added that according to one embodiment of the present utility model, the anti-lost traction rope 10 is colored in a non-pure red.

It should be noted that, the blood of the person is red, and the anti-lost traction rope 10 is not pure red, so that the medical staff can distinguish and identify the anti-lost traction rope conveniently, and the medical staff can recognize and pick up the anti-lost traction rope to pull the positioning ball 20 more quickly when the anti-lost traction rope needs to be pulled.

Preferably, according to an embodiment of the present utility model, the anti-lost traction rope 10 is one or more of orange, yellow, green, cyan, blue, purple, white, and black.

It should be further added that, in the specific implementation, the end portion of the anti-lost traction rope 10 is shaped like a ring, so as to form a traction ring 101 to facilitate the threading of the medical drag hook, etc., so that the anti-lost traction rope 10 is pulled.

In addition, in all the above embodiments, the surface of the positioning ball 20, the surface of the micro fastening ring 201 and the surface of the anti-slip component are coated with an iodophor coating layer having a sterilizing and disinfecting function, so when the positioning ball 20 is clamped in the concave pit ground on the surface of the outer cortical bone of the spinal pedicle of the patient, the coated iodophor coating layer can play a certain disinfecting function and can effectively resist and kill germs, so that the application is safer, and bacterial infection is not easy to occur on the surface of the outer cortical bone of the spinal pedicle of the patient and in the ground concave pit.

Other embodiments, etc., are not illustrated herein.

To sum up, in the above-mentioned pedicle screw entry point positioning device 1000 that this application provided, when specifically using, advance at patient's vertebra pedicle of vertebral arch outer cortex bone surface routine dissection location pedicle screw advance needle position find pedicle screw entry point, and use tool such as grinding to grind out the pit of certain degree of depth at the pedicle screw entry point that corresponds to be found, corresponding pit depth that grinds is roughly around 3.0mm, then, can shelve this application locating ball 20 in the corresponding pit, and the follow-up uses C shape arm X ray machine perspective this application locating ball 20's resting position, when confirming this application locating ball 20's resting position is right back, will this application locating ball 20 takes out, and continue to use tool such as pedicle of vertebral arch inner channel finder to set up pedicle screw passageway to patient's vertebra pedicle of vertebral arch inside from this right locating position under C shape arm X ray machine perspective, after pedicle screw passageway is established, can screw the pedicle screw that will use to screw to set up in the pedicle screw passageway that has been made to be screwed into to the patient, in order to fix this application pedicle screw 20's the same vertebra pedicle of vertebral arch outer cortex bone surface, when this application locating ball 20's vertebra pedicle screw is taken out at the same place, and when the position of vertebral arch pedicle screw is taken out routine is located to the pedicle screw, the application has the pedicle screw positioning position of vertebral arch outer layer.

For the above-mentioned operation, on the one hand, when this application is specifically used, in the corresponding pit that grinds is shelved to the locating ball 20, corresponding pit is in the outer cortex bone surface of patient's vertebra pedicle of vertebral arch, does not go deep into inside the patient's vertebra pedicle of vertebral arch, can not hurt four walls of patient's vertebra pedicle of vertebral arch, can not hurt tissues such as spinal cord and nerve root more for this application locating ball 20 uses safe and reliable. On the other hand, the positioning ball 20 is placed in the corresponding ground pit, and the size of the positioning ball is matched with that of the corresponding ground pit, so that the positioning ball is stable to place and is not easy to shake, and the positioning difficulty can be greatly reduced, so that the positioning ball is easy to control. In view of the above two aspects, whether it is a practice doctor, a doctor with insufficient experience, or a doctor with abundant experience, the positioning ball 20 of the present application can easily position the entry point of the pedicle screw of the spine of the patient when performing the spine surgery on the patient, so that the related surgery can be completed quickly, efficiently and safely in a short time.

Moreover, because the anti-lost traction rope 10 is further provided in the present application, and during actual use, the outer diameter of the positioning ball 20 is very small, generally about 4.0mm, so when the present application is used, the end of the anti-lost traction rope 10 is exposed to the operation wound, even if the positioning ball 20 falls down during clamping when being placed in the corresponding ground pit, the positioning ball 20 is also relatively easy to quickly find out the anti-lost traction rope 10 by pulling the anti-lost traction rope 10, so that the positioning ball is difficult to be found out after being used up by a patient, and meanwhile, the positioning ball 20 can be quickly taken out by pulling the anti-lost traction rope 10, so that the positioning ball is also difficult to be left in the patient, and the whole formed by the present application can be used more safely and reliably.

Furthermore, the application has the advantages of strong practicality and excellent use effect.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (7)

1. The pedicle screw entry point positioning device is characterized by comprising an anti-lost traction rope and a positioning ball which can be developed under the perspective of a C-shaped arm X-ray machine; the anti-lost traction rope is fixedly connected with the positioning ball;

the outer surface of the positioning ball is provided with an anti-slipping component which can be penetrated into the cortical bone on the outer layer of the projection surface of the vertebral arch.

2. The pedicle screw entry point positioning device of claim 1, wherein the outer surface of the positioning ball is connected with a tiny tightening ring outwards, and the anti-lost traction rope is threaded through the tiny tightening ring.

3. The pedicle screw entry point positioning device of claim 1, wherein the anti-slip members are multiple anti-slip spikes protruding evenly outward from the outer surface of the positioning ball.

4. The pedicle screw entry point positioning device of claim 1, characterized in that the positioning ball has an outer diameter D, D = 2.0mm-6.0mm.

5. The pedicle screw entry point positioning device of claim 4, wherein the outer diameter D of the positioning ball is 3.0mm, 4.5mm or 5.0mm.

6. The pedicle screw entry point positioning device of claim 1, wherein the positioning ball is of stainless steel or titanium alloy.

7. The pedicle screw entry point positioning device of claim 1, wherein the anti-lost tow rope is non-pure red in color.

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