WO2016144114A1

WO2016144114A1 - Variable diameter protector assembly for minimally invasive surgery

Info

Publication number: WO2016144114A1
Application number: PCT/KR2016/002400
Authority: WO
Inventors: 허동화; 윤홍원; 김현성
Original assignee: 주식회사 메드릭스
Priority date: 2015-03-10
Filing date: 2016-03-10
Publication date: 2016-09-15
Also published as: KR20160109195A; KR101662787B1

Abstract

The present invention relates to a variable diameter protector assembly for minimally invasive surgery that comprises: a protective main body having opposite ends that are in communication with each other, wherein the protective main body has a channel formed therein and is retractable, the inner diameter of which is variable; and a plurality of ribs formed on the protective main body and disposed parallel to each other with a predetermined interval therebetween, wherein the ribs are parallel with the channel over the opposite ends of the protective main body, wherein the protective main body and the plurality of ribs are inserted through an opening of a person that undergoes a surgical procedure. As such, the variable diameter protector assembly varies the inner diameter thereof for applications to various surgical sites, thereby making a stable and accurate surgical procedure possible.

Description

Minimally invasive protector assembly with variable diameter

The present invention relates to a protector assembly for a minimally invasive surgical procedure of varying diameters, and more particularly, to a minimum invasive surgical protector having a variable diameter to allow a stable and reliable operation by varying the inner diameter to be applicable to various surgical sites It is about assembly.

The discs between the vertebrae and the bones function as joints, and as the spine moves, the position and shape of the nucleus pulposus inside the disc changes, which plays a very important role in minimizing the impact on the spine.

Most of the nucleus of the nucleus is composed of water (water). As the body ages, the amount of water gradually decreases, and the disk loses its buffer function.

Due to this, excessive pressure is applied to the fiber, which causes back pain, and further progresses, when the fiber is severely stretched or ruptured, pressing the nerve root located at the back causes pain in the pelvis and legs.

Since the spine is gradually narrowed or spine deformed as the vertebral bones settle down, various side effects occur.

As a method of treating the disease accompanying the disc, there is a method of removing the damaged intervertebral disc and replacing the space between two adjacent vertebrae with a prosthesis, a so-called cage.

That is, the prosthesis is to restore the vertebral function by restoring the original distance between two adjacent vertebral bodies, the original height of the intervertebral disc.

As a surgical method for inserting such a prosthesis between the vertebrae, an anterior lumbar interbody fusion (ALIF) that opens the abdomen and inserts the prosthesis in front of the spine, a latent lumbar interbody fusion (LLIF) that inserts the prosthesis through the flanks, etc. Transforaminal Lumbar Interbody Fusion (TLIF) inserts the prosthesis diagonally at a distance of 30 to 40 mm from the center to the back, and Interior Lumbar Interbody Fusion (PLIF) inserts the prosthesis from the back.

Referring to the conventional TLIF treatment method, one side of the prosthetic member is first inserted diagonally through the dorsal side of the human body and positioned between the vertebrae, and then the insertion of the prosthetic member is completed by placing the front side of the inserted prosthetic member toward the abdomen of the human body. do.

At this time, in the case of the conventional TLIF treatment method, the position of the prosthetic member is easily influenced by the operator's skill, and there is a problem that the prosthetic member is not easily positioned between the vertebrae, and the prosthetic member is not accurately positioned between the vertebrae. If not, there is also a problem that the surgical effect falls.

Invented from the above point of view, such as "less invasive surgical system and method" (hereinafter, 'prior art') of the Patent Publication No. 10-2007-0109977.

However, this prior art requires a sequential insertion of multiple dilators through the openings formed in the patient's body to secure the diameter as needed for the procedure. have.

Therefore, it is possible to insert a cage or a disc into the patient's body without having to insert a plurality of expanders with a minimum of minimum diameters. There is an urgent need to develop a technique that does not damage the muscles of the patient due to the insertion of the dilator.

The present invention has been invented to improve the above problems, and to provide a protector assembly for a minimally invasive procedure variable in diameter to enable a stable and reliable procedure by varying the inner diameter to be applicable to various treatment sites. .

In order to achieve the above object, the present invention is a channel (channel) is formed therein, the protective body of the both ends penetrating is flexible and the inner diameter is variable; And a plurality of ribs formed in the protection body and arranged parallel to the channel over both ends of the protection body and arranged in parallel at regular intervals, wherein the protection body and the plurality of ribs are openings of the subject. It is possible to provide a protector assembly for a minimally invasive procedure of varying diameter, characterized in that inserted through).

Here, the plurality of ribs are formed on the inner circumferential surface and the outer circumferential surface of the protective body.

In this case, the plurality of ribs is characterized in that formed on the inner peripheral surface of the protective body.

The plurality of ribs are formed on an outer circumferential surface of the protective body.

The protective body may be made of a flexible material having a film shape, and may allow shape deformation between one of the plurality of ribs and a neighboring rib, and a distance between the one rib and the neighboring rib may include the protection. It is characterized in that the variable according to the deformation of the body.

In addition, the protector assembly for the minimally invasive surgical procedure, the diameter is variable, the protective body is a section allowing radially outward with respect to the inner diameter between the rib of one of the plurality of ribs and adjacent ribs respectively formed The apparatus further includes a patch, wherein a distance between one of the plurality of ribs and a neighboring rib is varied according to a shape deformation of the protective body, and the protective body and the plurality of ribs are formed in the folded state. It is characterized in that it is inserted through the opening.

The plurality of folding portions may overlap each other in one direction so as to contact the outer surfaces of the plurality of ribs.

In addition, the protector assembly for the minimally invasive surgical procedure of variable diameter further comprises an alignment cap detachably coupled from the other end of each of the plurality of ribs opposite to one end of each of the plurality of ribs inserted through the opening, The alignment cap surrounds a portion of the outer surface of the protective body that defines the plurality of ribs and the folds, and the alignment cap includes one end of each of the plurality of ribs and the plurality of ribs when the protective body is inserted through the opening. And separated from the protective body.

According to the present invention having the above configuration, the following effects can be achieved.

First, the present invention enables a stable and reliable procedure by varying the inner diameter from the structure including a plurality of ribs provided in the protective body for forming a channel therein so that it can be applied to various treatment sites.

In addition, it is possible to minimize the damage to the muscles that may occur in the process of inserting a plurality of dilators sequentially through the opening formed in the body of the patient, and without using a plurality of dilators (cage ) And artificial discs can be inserted.

In particular, the present invention bends the stretchable protective body radially outward to form a plurality of folded portions and to contact the plurality of rib outer surfaces to minimize the inner diameter, expand the folded portion to expand the inner diameter, etc. Since it is possible, not only the insertion of a surgical tool, such as an impactor, but also the input of a device for visual confirmation during surgery such as an endoscope, it is possible to be free from space constraints during surgery.

In addition, the present invention is effective in that it is possible to implement a compact and lightweight in a relatively simple configuration to reduce the cost and waste of raw materials.

1 is a perspective view showing the overall structure of a protector assembly for a minimally invasive procedure variable in diameter according to an embodiment of the present invention, a view showing a state in which the inner diameter is maximum

Figure 2 is a perspective view showing the overall structure of the protector assembly for a minimally invasive procedure variable in diameter according to another embodiment of the present invention, the main body of the present invention by bending the protective body to form a folded portion to reduce the inner diameter Drawing

3 and 4 is a plan view schematically illustrating the internal structure of the protector assembly for the minimally invasive procedure variable in diameter according to various embodiments of the present invention

5 is a perspective view showing a procedure using the protector assembly for the minimally invasive procedure variable in diameter according to an embodiment of the present invention

Figure 6 is a perspective view showing another state of use of the protector assembly for a minimally invasive procedure variable in diameter in accordance with another embodiment of the present invention

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms.

In this specification, the embodiments are provided so that the disclosure of the present invention may be completed and the scope of the present invention may be completely provided to those skilled in the art.

And the present invention is only defined by the scope of the claims.

Thus, in some embodiments, well known components, well known operations and well known techniques are not described in detail in order to avoid obscuring the present invention.

In addition, the same reference numerals throughout the specification refer to the same components, and the terminology (discussed) used herein is for the purpose of describing the embodiments are not intended to limit the invention.

As used herein, the singular forms "a", "an" and "the" include plural unless the context clearly dictates otherwise, and the elements and acts referred to as 'comprises' or 'do' not exclude the presence or addition of one or more other components and acts. .

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used in a sense that can be commonly understood by those skilled in the art.

In addition, the terms defined in the commonly used dictionary are not ideally or excessively interpreted unless they are defined.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

1 is a perspective view showing the overall structure of a protector assembly for a minimally invasive procedure variable in diameter according to an embodiment of the present invention, a view showing a state in which the inner diameter is maximized.

Figure 2 is a perspective view showing the overall structure of the protector assembly for a minimally invasive procedure variable in diameter according to another embodiment of the present invention, the main body of the present invention by bending the protective body to form a folded portion to reduce the inner diameter The figure which shows.

Protector assembly (P) according to the present invention is a channel (channel) is formed therein as shown, stretchable and the protective body 20 of both ends through the inner diameter is variable, as shown in Figures 1 and 2, It can be seen that the structure includes a plurality of ribs 10 formed in the main body 20, parallel to the channel over both ends of the protective main body 20, and arranged in parallel at regular intervals.

Here, the protective body 20 and the plurality of ribs 10 are inserted through the opening 41 of the subject.

Therefore, the protector assembly (P) from the structure including a plurality of ribs (10) provided in the protective body 20 to form a channel therein, by varying the inner diameter to be applicable to various treatment sites, stable and reliable operation It becomes possible.

In particular, the protector assembly (P) is capable of minimizing and expanding the inner diameter according to the expansion and contraction of the protective body 20, so that the procedure can be performed only by securing a minimum opening when inserting a cage or artificial disc. It is possible, and it is not necessary to insert several dilators sequentially, thereby minimizing muscle damage.

In addition, it is possible to insert a surgical tool such as an impactor (not shown), as well as to insert a device for visual confirmation during surgery such as an endoscope (hereinafter not shown), so as to be free from space constraints during surgery. do.

In addition, the protector assembly (P) is effective in that it is possible to implement a compact and lightweight in a relatively simple configuration as described above to reduce the cost and waste of raw materials.

The present invention can be applied to the above embodiments, and of course, the following various embodiments are also applicable.

The plurality of ribs 10 may be applied to an embodiment of a structure formed on the inner circumferential surface and the outer circumferential surface of the protective body 20 as shown in FIG. 3.

That is, the structure as shown in FIG. 3 may be manufactured in the form of double injection of the hollow ribs 10 after the cylindrical protective body 20 is manufactured, or the solid surface may be formed on the outer and inner surfaces of the protective body 20. Applications and modifications, such as fabricating the ribs 10 in a manner of bonding or fusion, are possible.

In addition, the plurality of ribs 10 may be formed only on the inner circumferential surface of the protective body 20 as shown in FIG. 4, or may be applied or modified such as to be formed only on the outer circumferential surface of the protective body 20, although not specifically illustrated.

Here, the protective body 20 is made of a flexible material in the form of a film, and allows deformation of the shape between one rib 10 of the plurality of ribs 10 and the adjacent ribs 10, and one rib ( The distance between 10 and the neighboring ribs 10 may vary according to the shape deformation of the protective body 20.

On the other hand, as shown in the upper part of FIG. 5, the protector assembly P has a protective body 20 radially outward with respect to an inner diameter between one of the ribs 10 of the plurality of ribs 10 and the neighboring ribs 10. It is possible to further form a folded portion that allows bending and to form each.

Here, the folded portion is intended to be inserted in a state in which the internal diameter is minimized to the opening 41 formed in the body 40 of the subject.

In other words, the distance between one of the ribs 10 of the plurality of ribs 10 and the neighboring ribs 10 varies according to the shape deformation of the protective body 20, and the protective body 20 and the plurality of ribs 10 are different. Is inserted through the opening 41 in a state where a folded portion is formed.

In addition, it is convenient to expand the inner diameter in the state in which the protector assembly P is inserted into the opening 41 so that the plurality of folded portions overlap in one direction so as to contact the outer surfaces of the plurality of ribs 10, and the convenience of storage. It is preferable in terms of.

On the other hand, the protector assembly (P) is an alignment cap 50 detachably coupled from the other end of each of the plurality of ribs 10 opposite to one end of each of the plurality of ribs 10 inserted through the opening 41 as shown in FIG. Application of an embodiment further comprising) is possible.

Here, the alignment cap 50 surrounds a part of the outer surface of the protective body 20 forming the plurality of ribs 10 and the folded portion, and the alignment cap 50 includes one end of each of the plurality of ribs 10 and the protective body ( When 20 is inserted through the opening 41, it is separated from the plurality of ribs 10 and the protective body 20.

The method of using the protector assembly P according to the above embodiment will be described as follows with reference to FIGS. 1 to 6.

First, the operator sequentially inserts a plurality of dilators 30 having different diameters through openings 41 formed in the body 40 of the subject and removes some of the plurality of dilators 30. S1: first step). Preferably, the inner diameter dilator 31 is removed. This leaves only the large diameter expander 32.

In addition, the operator may have a channel formed therein, the protective body 20 having both ends penetrating and having a variable internal diameter, and formed on the protective body 20 and extending over both ends of the protective body 20. The protector assembly P including the plurality of ribs 10 arranged in parallel and in parallel at regular intervals is inserted through the opening 41 in a state where the distance of each of the plurality of ribs 10 is closest (S2: Second step). Specifically, the protector assembly P is inserted into the remaining large diameter expander 32.

Thereafter, the operator removes the remaining expanders 32 of the plurality of expanders 30 from the opening 41 (S3: third step).

Next, the operator spaces the distance of each of the plurality of ribs 10 during the implantation of the prosthetic material or the artificial disc through the internal channel while the protector assembly P is inserted into the opening 41. The inner diameter is expanded (S4: fourth step).

Here, referring to FIG. 5 again, the first step S1 may include inserting a first expander 31 having a first diameter into the opening 41 and a second having a second diameter larger than the first diameter. And inserting the inner circumferential surface of the dilator 32 into the opening 41 so as to face the outer circumferential surface of the first dilator 31, and removing the first dilator 31 from the second dilator 32.

At this time, the second step S2 is performed in a state where only the second expander 32 remains in the opening 41.

In addition, in the second step S2, the distance of each of the plurality of ribs 10 is narrowed as much as possible, and the protective body 20 is disposed between one rib 10 of the plurality of ribs 10 and the adjacent rib 10. In the radially outward with respect to the inner diameter can be further performed to form the respective folded portions to allow bending.

In addition, in the second step S2, a plurality of folding portions may be overlapped in one direction so as to contact the outer surfaces of the plurality of ribs 10, thereby inserting the protector assembly P into the opening 41. .

Accordingly, when the protector assembly P is inserted into the opening 41, the third step S3 and the fourth step S4 are sequentially performed.

On the other hand, in the second step S2, the plurality of folding portions overlap each other in one direction so as to contact the outer surfaces of the plurality of ribs 10 and insert the protector assembly P into the openings 41 through the openings 41. The operation of attaching the detachable alignment cap 50 from the other end of each of the plurality of ribs 10 on the opposite side with respect to one end of each of the plurality of ribs 10 to be inserted can be performed.

At this time, when the protector assembly P is inserted into the opening 41, the alignment cap 50 is removed from the protector assembly P before the third step S3 is performed.

In addition to the above method, only a plurality of dilators (for example, 1 to 4 dilators) are sequentially inserted in the diameter order into the protector assembly P while only the protector assembly P inserted into the opening 41 remains. Spinner surgery such as prosthetics and artificial discs may be performed through the internal through-holes of the dilator 4 while removing the dilators 1 to 3 and leaving only the 4 dilator having the largest diameter inside the protector assembly (P). In this case, unlike the above embodiment, it can be used to secure enough openings through the dilator. Also, since a plurality of dilators are inserted into the protector assembly P, the patient's muscles are not damaged. to be.

As described above, it can be seen that the present invention has a basic technical idea to provide a protector assembly for a minimally invasive procedure, in which a diameter is changed to allow a stable and reliable procedure by varying an internal diameter to be applicable to various surgical sites. .

In addition, many modifications and applications are possible to those skilled in the art within the scope of the basic technical idea of the present invention.

Claims

A protective body having a channel formed therein, the protective body having both ends penetrating and having an internal diameter variable; And

A plurality of ribs formed in the protection body and arranged parallel to the channel over both ends of the protection body and arranged in parallel at regular intervals,

And said protective body and said plurality of ribs are inserted through an opening of the subject.
The method according to claim 1,

The plurality of ribs are formed on the inner circumferential surface and the outer circumferential surface of the protective body characterized in that the diameter of the minimally invasive procedure protector assembly.
The method according to claim 1,

The plurality of ribs are formed on the inner circumferential surface of the protective body, characterized in that the diameter of the minimally invasive procedure protector assembly.
The method according to claim 1,

The plurality of ribs are formed on the outer circumferential surface of the protective body, the diameter of the minimally invasive protector assembly for the procedure.
The method according to claim 1,

The protective body is made of a flexible material in the form of a film, and allows shape deformation between one of the plurality of ribs and the neighboring ribs, and the distance between the one rib and the neighboring ribs of the protective body Minimally invasive protector assembly for variable diameter, characterized in that the variable according to the deformation.
The method according to claim 1,

The minimally invasive surgical protector assembly is variable in diameter,

The protective body further includes a fold portion that allows each of the ribs of one of the plurality of ribs and adjacent ribs to allow bending radially outward with respect to the inner diameter,

The distance between one of the plurality of ribs and a neighboring rib is varied according to the shape deformation of the protective body,

And the protective body and the plurality of ribs are inserted through the opening in a state in which the folded portion is formed.
The method according to claim 6,

Minimally invasive protector assembly of the variable diameter, characterized in that the plurality of folds overlap in one direction mutually in contact with the outer surface of the plurality of ribs.
The method according to claim 6,

The minimally invasive protector assembly is variable in diameter,

And an alignment cap detachably coupled from the other end of each of the plurality of ribs opposite to one end of each of the plurality of ribs inserted through the opening,

The alignment cap surrounds a portion of the outer surface of the protective body forming the plurality of ribs and the folded portion,

And the alignment cap is separated from the plurality of ribs and the protective body when one end of each of the plurality of ribs and the protective body are inserted through the opening.