WO2016144101A1

WO2016144101A1 - Rail-type retractor for minimal invasive surgery

Info

Publication number: WO2016144101A1
Application number: PCT/KR2016/002363
Authority: WO
Inventors: 허동화; 윤홍원; 김현성
Original assignee: 주식회사 메드릭스
Priority date: 2015-03-10
Filing date: 2016-03-09
Publication date: 2016-09-15
Also published as: KR101760730B1; KR20160109194A

Abstract

The present invention relates to a rail-type retractor for minimal invasive surgery, comprising: a first blade having a curved shape; a second blade having a curved shape; a blade guide rail that includes two guide rails disposed parallel to each other, wherein the upper portion of the first blade is fixedly coupled to an inner coupling part after sliding along the inner surfaces of the two guide rails; a second blade fixing means that fixedly couples the second blade to a coupling part in the center of the front thereof such that the second blade faces the first blade, slides the second blade along the inner surfaces of the two guide rails, and adjusts the distance from the first blade; and a first coupling plate and a second coupling plate, wherein, while the first blade and the second blade are spaced apart from each other by the second blade fixing means, the first coupling plate is engaged with one end of the upper portion of the first blade and one end of the upper portion of the second blade and is sildably coupled therewith from top to bottom, and the second coupling plate is engaged with the other end of the upper portion of the first blade and the other end of the upper portion of the second blade and is sildably coupled therewith from top to bottom.

Description

Rail-type minimally invasive traction device

The present invention relates to a rail-type minimally invasive surgical traction device, and more particularly to a rail-type minimally invasive surgical traction device that can easily expand the blades constituting the muscle traction device.

In general, in the case of a conventional open surgery for treating a patient, a large incision site and a large amount of bleeding generated during surgery are slow to recover the patient after surgery, and a large scar remains after the operation, which affects a patient's later life. Recently, a new surgical technique of minimally invasive surgery (MIS) using laparoscopic surgical tools has been developed to overcome the shortcomings of open surgery.

Minimally Invasive Surgery is a surgical technique in which only the smallest incision is made on the surface of a patient's body using an elongated surgical tool specially designed to minimize the incision required for surgery. This minimally invasive surgery requires less incisions and significantly less bleeding than open surgery, so the patient's recovery period is faster and external scars are smaller. It is increasing.

Recently, minimally invasive surgical techniques have also been used in spinal disc surgery. Korean Patent Publication No. 10-2007-0109977 (less invasive surgical system and method) is a system for implanting a spinal fixation device in the vertebrae through the opening of the patient, the proximal end ), Distal end, and passageway from the proximal end to the distal end, at least one slot across the passageway, and flexible for engaging with the spinal fixation device. a cannula having a portion, wherein the at least one slot is configured to receive an elongated fixing device, to increase the size of the incision to form the opening. A retr with blade having at least one dilator having an elongated cylinder shape with a through channel and configured to be inserted past the at least one dilator need an actor).

Korean Laid-Open Patent Publication No. 10-2007-0109977 requires inserting at least one or more dilators continuously into a patient's body, after which a retractor is inserted over the dilators. The dilators are then removed and the retractor expands the incision to form an opening. Compressing the handle of the retractor to expand the incision causes the blades to unfold and the blades to be secured in the open position using a locking mechanism, which consists of a screw rod and a nut.

After all, according to Korean Patent Laid-Open Publication No. 10-2007-0109977, the user needs to compress the handle to expand the retractor, so it is difficult to accurately adjust the size of the incision to be expanded, and when the blades are expanded, the blade Since the gap between the opening is to penetrate the muscles of the body between the blades, there is a significant difficulty in the operation using the retractor, there is a great risk of damage to the muscles between the blades during the operation.

The present invention is to solve the above problems of the prior art, the rail-type minimally invasive surgical traction device that can easily connect the gap between the blades after expanding the gap between the two blades constituting the traction device The purpose of the invention is to provide.

In addition, an object of the present invention is to provide a rail-type minimally invasive surgical traction device that can be easily and precisely spaced apart when expanding the space between the two blades.

Rail-type minimally invasive surgical traction apparatus according to an embodiment of the present invention for achieving the above object is a curved first shape; Curved second blades; A blade guide rail having two guide rails disposed in parallel to each other and fixedly coupled to the inner fastening portion after the upper portion of the first blade slides along the inner circumferential surfaces of the two guide rails; A second blade fixing means for fixedly coupling the second blade to the fastening part of the front center so as to face the first blade, sliding the second blade along the inner circumferential surfaces of the two guide rails, and adjusting a distance from the first blade; And a first joint plate and a second joint plate which are engaged with the upper one end of the first blade and the upper one end of the second blade by sliding from top to bottom in a state where the first blade and the second blade are separated from each other by the second blade fixing means. It includes a second joint plate which is engaged with the other end of the upper blade and the other end of the second blade is coupled to slide from the top to the bottom.

In addition, the upper outer circumferential surface of the first blade and the second blade may be formed with a concave grooved female rail, a male rail protruding convexly formed on the inner peripheral surface of the blade guide rail.

In addition, the inner fastening portion of the blade guide rail is formed with a concave curved surface corresponding to the shape of the first blade, the middle of the coupling groove is formed so that the first blade is fitted, the central fastening portion of the second blade fixing means It may be formed in a concave curved surface corresponding to the shape of the two blades, the coupling groove may be formed in the center so that the second blade is fitted.

In addition, the upper outer circumferential surface of the first blade and the second blade has an inner surface formed in a circular shape and has a coupling portion having one side opened, and an inner coupling portion of the blade guide rail has a locking portion to which the coupling portion of the first blade is coupled. The central fastening portion of the two-blade fixing means may include a locking portion to which the coupling portion of the second blade is coupled.

In addition, the outer circumferential surface of one of the guide rails of the two guide rails of the blade guide rail is provided with a gear portion, and both sides of the body of the second blade fixing means is formed with a rail through hole through which the two guide rails are slid; A ratchet may be provided to adjust a distance that the second blade is spaced apart from the first blade by being locked or released from the gear part.

In addition, one side of the body is further provided with a pinion gear meshed with the gear portion, the second blade fixing means may be moved forward and backward on the blade guide rail as the pinion gear rotates.

In addition, both ends of the first blade and the second blade is formed with a male rail protruding convexly in the longitudinal direction of the blade, the first joint plate and the second joint plate are recessed in the longitudinal direction of the plate on both sides. This fine arm rail can be formed.

In addition, the first joint plate and the second joint plate are each composed of an inner plate and an outer plate based on the concave grooved arm rail, the length of the inner plate is formed corresponding to the length of the blade and the outer plate The lower end is formed shorter than the lower end of the inner plate may have an inclined surface.

In addition, the upper end of the first joint plate and the second joint plate may be provided with a protrusion formed to protrude so as to be fixed to the upper surface of the blade guide rail by sliding coupling plate.

In addition, the fixing portion may be formed with a coupling hole is coupled to the insertion device for sliding coupling the joint plate.

According to the rail-type minimally invasive surgical traction device according to the present invention, the space between the two blades constituting the traction device can be conveniently and precisely expanded by using the rack gear and the pinion gear, By engaging the corresponding joint means it is possible to simply bridge the gap between the flared blades.

In addition, by having a joint means of various widths corresponding to the separation distance between the two blades it is possible to variously adjust the spacing of the blades constituting the traction device according to the width of the joint means.

1 is a perspective view of a rail-type minimally invasive surgical traction apparatus according to the present invention.

Figure 2 is a perspective view of separating the first blade from the blade guide rail, the second blade from the second blade fixing means.

3 is a perspective view of a blade;

4 is a perspective view of the blade guide rail;

5 is a perspective view and a front view of the second blade fixing means.

Figure 6 is a perspective view of the first blade is coupled to the blade guide rail and the second blade is coupled to the second blade fixing means.

Figure 7 is a perspective view of the second blade and the second blade fixing means coupled to the blade guide rail of Figure 6;

8 is a perspective view illustrating a state in which the second blade of FIG. 7 is spaced apart from the first blade.

FIG. 9 is a perspective view of a state in which the first joint plate is coupled using an insertion apparatus after a predetermined distance from FIG. 8.

FIG. 10 is a diagram illustrating various states in which the first joint plate is coupled according to FIG. 9. FIG.

FIG. 11 is a perspective view of a state in which the second joint plate is further coupled after the first joint plate is coupled according to FIG. 10. FIG.

12 is an exemplary view showing a state in which the second blade is spaced apart from the first blade by inserting two pins into each of the pin insertion holes of the first blade and the second blade, respectively, into the vertebrae.

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

1 to 12, the rail-type minimally invasive surgical traction apparatus 100 extends the space between two blades after insertion into the patient's body and expands the space between two open blades by joints. A minimally invasive surgical retractor that pulls the muscles of the person more easily. Hereinafter, the joint means will be described as a joint plate.

The rail-type minimally invasive traction device 100 includes a curved first blade 10, a curved second blade 30, a blade guide rail 50, a second blade fixing means 70, and a first blade 10. The first joint plate 80 and the second joint plate 90 are included.

The blade guide rail 50 includes two

guide rails

51 and 54 disposed in parallel with each other, and the upper portion of the first blade 10 slides along the inner circumferential surfaces of the two

guide rails

51 and 54 and then inside thereof. It is fixedly coupled to the fastening portion 55.

A concave grooved rail is formed on the upper outer circumferential surface of the first blade 10, a concave grooved arm rail 31 is formed on the upper outer circumferential surface of the second blade 30, and a blade guide is formed. The male rail 52 which protrudes convexly is formed in the inner peripheral surface of the rail 50. FIG. The male rail 11 of the first blade 10 and the female rail 31 of the second blade 30 are formed on the inner side of the two

guide rails

51 and 54 of the blade guide rail 50 ( 52, the first blade 10 and the second blade 30 are moved.

The second blade fixing means 70 fixedly couples the second blade 30 to the fastening portion 71 of the front center so as to face the first blade 10 and the second blade 30 to the two guide rails 51. , 54 and sliding along the inner circumferential surface to adjust the interval with the first blade (10).

Referring to FIG. 4, the inner fastening portion 55 of the blade guide rail 50 is formed as a concave curved surface corresponding to the shape of the first blade 10, and the center of the blade guide rail 50 is coupled to the first blade 10 by fitting. Groove 56 is formed.

Referring to FIG. 5, the central fastening portion 71 of the second blade fixing means 70 is formed as a concave curved surface corresponding to the shape of the second blade 30, and the second blade 30 is fitted into the center. Coupling groove 72 is formed to be.

2, 4 and 5, specifically, the outer peripheral surface of the upper portion of the first blade 10 is provided with a coupling portion 12, the inner surface of which is formed in a circular shape, one side of the second blade 30 The upper outer circumferential surface has a coupling portion 32 having an inner surface formed in a circular shape and having one side opened, and the coupling portion 12 of the first blade 10 is coupled to the inner coupling portion 55 of the blade guide rail 50. The locking portion 57 is provided, and the central fastening portion 71 of the second blade fixing means 70 includes a locking portion 73 to which the coupling portion 32 of the second blade 30 is coupled.

Referring to FIG. 4, the blade guide rail 50 has a male rail 52 protruding convexly in the rail length direction inside the two

guide rails

51 and 54, but the first blade 10 is formed. The male rail 52 is not formed at the center of the inner fastening portion 55 to be coupled, and the coupling groove 56 is formed to allow the coupling portion 12 of the first blade 10 to be fitted therein. Inside the 56 is provided with a locking portion 57 to which the coupling portion 12 of the first blade 10 is coupled. Since the configuration of the locking portion 57 of the blade guide rail 50 is the same as the configuration of the locking portion 73 of the second blade fixing means 70 will be described in detail with reference to FIG.

Referring to FIG. 5, the center of the front surface of the body of the second blade fixing means 70 is formed as a concave curved surface, and the arms of the second blade 30 are formed at left and right sides of the central fastening portion 71 formed at the concave curved portion. A male rail having a convex shape coupled to the rail 31 is formed, but a male rail is not formed in the middle of the central fastening portion 71, that is, inside the concave curved portion, and the coupling portion 32 of the second blade 30 is formed. The coupling groove 72 is formed so that the fitting can be combined.

An inner side of the coupling groove 72 is provided with a locking portion 73 to which the coupling portion 32 of the second blade 30 is coupled. The locking portion 73 is vertically provided in a cylindrical shape and exposed through the upper surface of the body of the second blade fixing means 70, and the diameter of the coupling portion 32 of the second blade 30 can be combined with each other. It is formed, provided in the lower portion of the pressing portion (73a) and the pressing portion (73a) that the user can press the exposed portion on the upper surface of the body to provide an elastic force upward and the pressing portion (73a) so that the engaging portion 32 can be caught It is composed of an elastic portion 73b formed to a larger diameter. The user inserts the engaging portion 32 of the second blade 30 while pressing the pressing portion 73a, and when the user releases the pressing portion 73a, the elastic portion 73b rises upward by the elastic force. The engaging portion 32 is caught by the locking portion 73 without falling out. The coupling method of the second blade fixing means 70 and the second blade 30 has been described in detail above with reference to FIG. 5, and the method of coupling the first blade 10 to the blade guide rail 50 is also described. same.

The outer circumferential surface of one of the guide rails 51 of the two guide rails of the blade guide rail 50 is provided with a gear portion 53, and both sides of the body of the second blade fixing means 70 are two guide rails 51, Rail through

holes

74a and 74b through which 54 is slid through are formed, and the distance between the second blade 30 and the first blade 10 is adjusted by being caught or released by the gear part 53 at one side of the body. Ratchet 75 is provided. The ratchet 75 is installed to rotate elastically, and one end of the ratchet 75 is caught or released from the gear portion 53 of the guide rail 51.

One side of the body further includes a pinion gear (not shown) meshed with the gear portion 53. When the user rotates the handle 76, the pinion gear (not shown) rotates so that the second blade fixing means 70 has a blade. By finely moving back and forth on the guide rail 50, the distance between the first blade 10 and the second blade 30 can be precisely adjusted.

The first joint plate 80 has an upper end and a second end of the first blade 10 in a state where the first blade 10 and the second blade 30 are spaced apart from each other by the second blade fixing means 70. Engaged in the upper end of the blade 30 is coupled to slide down from the top, the second joint plate 90 is engaged with the upper end of the first blade 10 and the other end of the second blade 30 from top to bottom Are combined with sliding.

1 to 3 and 6 to 9, both ends of the first blade 10 and the second blade 30 are formed by

male rails

13 and 33 which protrude convexly in the longitudinal direction of the blade. The first joint plate 80 and the second joint plate 90 are formed on both sides thereof with recessed arm rails 81 recessed in the longitudinal direction of the plate. 3 shows the configuration of the first joint plate 80, but the configuration of the second joint plate 90 is the same.

The first joint plate 80 and the second joint plate 90 are each composed of an inner plate 82 and an outer plate 83 based on a concave grooved arm rail 81, and an inner plate 82. The length of is formed to correspond to the length of the blade (10, 30) and the lower end of the outer plate 83 is formed shorter than the lower end of the inner plate 82 and has an inclined surface (84).

1 and 9, the inner plate 82 is formed to correspond to the lengths of the

blades

10 and 30 because the inner plates 82 connect the gaps between the

blades

10 and 30. It is preferable. However, since the outer plate 83 is an outer plate, it is not necessary to configure the length of the

blades

10 and 30. In addition, as shown in Figure 9, when sliding the first joint plate 80 using the insertion device 200, the length of the inner plate 82 and the outer plate 83 is the same blade (10, 30) It is quite inconvenient to slidingly engage the male rails 13, 33 of. Either of the inner plate 82 or the outer plate 83 should be relatively short in length so that the long side is first contacted with the

male rails

13 and 33, and then slidingly coupled based on this is much easier. By having the inclined surface 84 on the outer plate 83, the outer plate 83 can be easily combined without being caught by the upper surface of the guide rail 51 when sliding from the top to the bottom.

The upper end of the first joint plate 80 and the second joint plate 90 is provided with fixing

parts

85 and 95 protruding to be fixed to the upper surface of the blade guide rail 50 by sliding the joint plate is coupled to the upper surface of the blade guide rail 50; do.

The fixing

parts

85 and 95 are formed with

coupling holes

86 and 96 to which the inserting device 200 for sliding coupling the

joint plates

80 and 90 is coupled.

1, 3, 9 to 11, the fixing portion 85 of the first joint plate 80 is fixed to the upper surface of the guide rail 51 by the second joint plate 90 Fixing portion 95 is fixed to the upper surface of the guide rail (54). Each fixing

part

85 and 95 is provided with

coupling holes

86 and 96 to which the insertion apparatus 200 can be coupled.

Since the fixing

parts

85 and 95 are caught by the upper surfaces of the guide rails 51 and 54, the

joint plates

80 and 90 may be stably fixed and maintained without slipping down.

11 shows that the first joint plate 80 and the second joint plate 90 are stably fixed and held by the fixing

units

85 and 95.

Referring to FIG. 12, two

pins

310 and 320 penetrate the pin insertion holes 14 and 34 of the first blade 10 and the second blade 30, respectively, and are inserted into the vertebrae and then the second blades. When the blade fixing means 70 is moved outward along the two

guide rails

51 and 54, the second blade 30 is separated from the first blade 10 by a certain distance, and the spacing between the vertebrae is also widened. . By using such a method, the muscle can be pulled more efficiently than the conventional retractor, and the disk of the spine can be operated more easily and precisely.

According to the present invention, the space between two blades constituting the traction device can be conveniently and precisely expanded by using the rack gear and the pinion gear, and between the blades that are opened by engaging the joint means corresponding to the spaces between the blades. You can easily connect the intervals.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. Of course, it is obvious that such changes will fall within the scope of the claims.

Claims

Curved first blades;

Curved second blades;

A blade guide rail having two guide rails disposed in parallel to each other and fixedly coupled to the inner fastening portion after the upper portion of the first blade slides along the inner circumferential surfaces of the two guide rails;

A second blade fixing means for fixedly coupling the second blade to the fastening part of the front center so as to face the first blade, sliding the second blade along the inner circumferential surfaces of the two guide rails, and adjusting a distance from the first blade; And

The first joint plate and the first joint plate which are engaged with the upper end of the first blade and the upper end of the second blade by the second blade fixing means, the first blade and the second blade are coupled to each other, and are slid from top to bottom. And a second joint plate engaged with the upper other end of the blade and the upper other end of the second blade and slidably coupled from the top to the bottom thereof.
The method of claim 1,

Concave grooved female rail is formed on the upper outer circumferential surface of the first blade and the second blade, the rail type minimally invasive surgical traction apparatus, characterized in that the male rail protruding convexly formed on the inner peripheral surface of the blade guide rail. .
The method of claim 1,

The inner fastening portion of the blade guide rail is formed with a concave curved surface corresponding to the shape of the first blade, the coupling groove is formed in the middle of the first blade is fitted, the central fastening portion of the second blade fixing means second blade Is formed of a concave curved surface corresponding to the shape of, the center of the rail-type minimally invasive surgery traction device, characterized in that the coupling groove is formed so that the second blade is fitted.
The method of claim 1,

The upper outer circumferential surface of the first blade and the second blade has a coupling portion with an inner surface formed in a circular shape and one side is opened, the inner coupling portion of the blade guide rail has a locking portion to which the coupling portion of the first blade is coupled, and a second blade. The center fastening portion of the fixing means is a rail type minimally invasive surgical traction apparatus characterized in that it comprises a engaging portion coupled to the coupling portion of the second blade.
The method of claim 1,

The outer circumferential surface of one of the guide rails of the two guide rails of the blade guide rail is provided with a gear portion, and both sides of the body of the second blade fixing means are formed with rail through holes through which the two guide rails slide, and one side of the body has the gear Traction device for the minimally invasive surgery of the rail type, characterized in that the ratchet is provided to adjust the distance that the second blade is spaced apart from the first blade by being caught or released.
The method of claim 5,

One side of the body further includes a pinion gear meshed with the gear unit, and the second blade fixing means is moved forward and backward on the blade guide rail as the pinion gear rotates. .
The method of claim 1,

Both ends of the first blade and the second blade is formed with a male rail protruding convexly in the longitudinal direction of the blade,

The first joint plate and the second joint plate is a rail type minimally invasive surgical traction apparatus, characterized in that the female rail formed in the groove in the longitudinal direction of the plate on both sides.
The method of claim 7, wherein

The first joint plate and the second joint plate are each composed of an inner plate and an outer plate based on a concave grooved arm rail, the length of the inner plate is formed to correspond to the length of the blade and the lower end of the outer plate Traction device for minimally invasive surgery of the rail type, characterized in that it is formed shorter than the bottom of the inner plate and has an inclined surface.
The method of claim 1,

At the upper end of the first joint plate and the second joint plate is a rail-type minimally invasive surgical traction characterized in that it comprises a protruding fixing portion to be fixed to the upper surface of the blade guide rail by slidingly coupled joint plate Device.
The method of claim 9,

The fixing part is a rail-type minimally invasive surgery traction device, characterized in that the coupling hole is coupled to the insertion device for sliding coupling the joint plate is formed.