KR200409155Y1 - Surgical operation instrument for vertebral bodyies - Google Patents

Abstract

The present invention is used to densify the reticular tissue of bone through a balloon which is injected into the verebral bodies of the spinal column and inflated by fluid injection for the treatment of fractures or various osteoporosis in humans or animals. In particular, the present invention relates to a device for interfacing with the tubular body, the assembly of the tubular body, the injection into the vertebral body, or the infusion of fluid when the expansion of the inflatable body is essentially blocked from the tubular block, The present invention relates to a vertebral body treatment apparatus incorporating an expansion limiting means for expanding only in the longitudinal direction of the spinal column.

Spinal body surgery apparatus according to the present invention is provided with an injection portion at the rear end, the shape maintaining the tubular body is formed in the discharge hole on the outer peripheral surface of the position biased; An inflatable body inserted into the injection part from the discharge hole side of the tubular body and in close contact with the outer peripheral surface of the tubular body; And pressing means for maintaining a close state of the inflatable body and the tubular body in a state in which the inflatable body part corresponding to the discharge hole position of the tubular body is exposed.

Vertebral Body, Surgery, Osteoporosis, Inflating Body, Tube, Compression Means, Restriction Means

Description

Spinal Body Treatment Device {SURGICAL OPERATION INSTRUMENT FOR VERTEBRAL BODYIES}

1 is a combined perspective view of the conventional surgical apparatus shown in FIG. 4A attached to the publication of Korean Patent Laid-Open No. 2001-0099620.

2a, 2b and 2c is an exploded perspective view, a combined perspective view and a cross-sectional view of the vertebral body treatment device according to the present invention,

Figure 3 is a perspective view of the combination of the vertebral body treatment device different from that of Figure 2a,

Figure 4 is a perspective view showing a state in which the operating device and the fluid injection nozzle combined according to the present invention.

<Description of the symbols for the main parts of the drawings>

10,110 tube 11,111 injection portion

11a and 111a: male thread portion 13 and 113: discharge hole

15: coupling ring groove 115: inclined extension portion

17, 117: round 20: inflatable body

21: closing part 23: injection hole

30,130: pressing means 41: retaining ring

50: connecting member 51: injection nozzle

The present invention is used to densify the reticular tissue of bone through a balloon which is injected into the verebral bodies of the spinal column and inflated by fluid injection for the treatment of fractures or various osteoporosis in humans or animals. Regarding the treatment apparatus to be,

In particular, the present invention is inherently blocked from the possibility of the expansion body to escape from the tubular body when inter-assembled with the tubular body, put into the vertebral body, or when inflated by injecting fluid,

The present invention relates to a vertebral body treatment apparatus incorporating an expansion limiting means for expanding the inflatable body only in the longitudinal direction of the spinal column.

Prior art related to a device for treating bone fractures or osteoporosis using an inflator

Patent Publication No. 2001-0099620 (Nov. 9, 2001) of Chiffon Incorporated, "System and Method for Injecting Substance into Bone" and

Patent Publication No. 2003-0018004 (2003.03.04) 『Therapeutic system and method of the spinal cord』

In particular, as can be seen in Figure 1 shown in Figure 4a attached to the publication of Japanese Patent Laid-Open No. 2001-0099620 the treatment apparatus for the injection and expansion of the inflating body is

A tube 78 having two fittings 90 and 98 at the rear end 80 of the grip 84;

A probe 96 inserted into the fitting 98 of the tube 78 and screwed through the coupling 100;

It consists of an expandable structure 86 provided at the end 82 of the tube 78 and having a tip 172.

In the treatment apparatus of the disclosed patent, the tube 78 serves as a conduit to inflate the structure by injecting a fluid such as a molding agent into the structure 86 with a soft material,

The probe 96 provides support for shape retention.

However, in the published patent, the role of the probe 96 is not essential, but rather, it causes complexity because the probe 96 needs to be separated after the tube 78 is introduced in the procedure and the cost of the product.

In addition, the expandable structure 86 fixed to the tube end 82 is difficult to secure to the tube end,

Since the structure is inserted into the vertebral body in a fixed state, the fluid should be inflated by inflation, and once removed, the fluid must be rigid enough not to escape from the end of the tube.

It requires significant manufacturing difficulty, increases cost, and labor and cost for testing to reduce defective rate.

The present invention has been proposed to solve the problems of the conventional vertebral body treatment apparatus.

Therefore, the present invention aims to provide a vertebral body treatment apparatus in which a shape can be maintained even by a tubular body without a probe for maintaining a separate shape, and a compression means for enclosing most of the tubular body and being in close contact with the tubular body.

In another aspect, the present invention provides a vertebral body treatment that includes an expansion limiting means for preventing the inflatable body of the front end portion of the tubular body from swelling, and a means for preventing the inflatable body from detaching when the inflatable body and the tubular body are combined with the compression means. It is an object to provide a device.

In order to achieve the above object, the vertebral body treating apparatus according to the present invention is provided with an injection portion at the rear end, and a shape maintaining tube having a discharge hole formed at an outer circumferential surface of the position biased at the front end portion; An inflatable body inserted into the injection part from the discharge hole side of the tubular body and in close contact with the outer peripheral surface of the tubular body; And pressing means for maintaining a close state of the inflatable body and the tubular body in a state in which the inflatable body part corresponding to the discharge hole position of the tubular body is exposed.

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

In each of the drawings, the same reference numerals, in particular, the tens and ones digits, or the tens, ones and alphabets, refer to members having the same function, and unless otherwise specified, each reference is referred to. What is necessary is just to consider the member which conforms to these standards.

In addition, in describing the vertebral body operating apparatus A according to the present invention, if the direction reference is specified with reference to FIGS. 2A and 2B, the side in which the discharge hole 13 of the tubular body 10 is formed is in front, and the injection unit The side in which (11) was formed is made backward.

First, the treatment device (A) according to the present invention is composed of a tubular body 10, the expansion body 20 to be fitted to the outer circumferential surface of the tubular body, the pressing means for bringing the inflatable body in close contact with the tubular body 10. have.

As shown in FIGS. 2A, 2B, and 2C, the tubular body 10 has an injection part 11 through which a fluid can be injected at a rear end thereof, and a discharge hole on an outer circumferential surface of the front end part. 13) is formed,

The injection portion 11 is located at the rear of the grip portion 19 to easily grasp the thin tubular body 10 during the operation operation,

A male screw portion 11a is formed on the outer circumferential surface of the injection portion 11 so that the coupling portion 53 of the connection member 50 for the fluid injection described below with reference to FIG. 4 can be screwed together.

The discharge holes 13 are formed in three symmetrical positions each, but the present invention is not limited by the number and position of the discharge holes shown.

The tubular body 10 preferably has sufficient strength to maintain the shape of the entire treatment apparatus, but has adequate elasticity to ensure bending property suitable for vertebral body surgery.

Next, the expansion body 20 is fitted into the front end of the tubular body 10 through the injection hole 23 is coupled in the form covering the front of the gripping portion 19 of the tubular body 10, the closing portion of the front end 21 is located in front of the discharge hole (13) of the tubular body (10).

The present invention is not limited by the extent of covering the tubular body 10 by the inflatable body 20, that is, by the relative length ratio of the tubular body and the inflatable body,

While the inflating body 20 is in close contact with the tubular body 10 by the pressing means, at least the exposed portion 25 of the inflating body located in the discharge hole 13 of the tubular body is not wrapped by the pressing means. Should be guaranteed,

However, as shown in the figure, the inflating body is formed to cover almost the entire part of the tube, so that it is suitable for providing a smooth treatment apparatus without causing bumps and uneven protrusions and ease of assembly.

The inflatable body 20 may be made of natural or synthetic rubber or soft synthetic resin, silicone, or composite material,

Furthermore, different materials may be manufactured for each part of one inflatable body. In particular, the exposed portion 25 of the inflatable body that is not wrapped by the pressing means 30 may be different from each other.

The pressing means 30 shown is a pipe shape in which a cutout portion 31 forming a straight line is formed and has elasticity so that the inflating body 20 can be pressed close to the tubular body 10.

The pressing means 30 has a length that can be wrapped from the circular jaw portion 17 located in front of the gripping portion 19 of the tubular body to before the discharge hole 13.

After inserting the inflating body 20 into the tubular body 10, when the pressing means 30 is coupled, the pressing means overlaps with a portion from the outlet hole 13 of the tubular body to before the gripper 19. After positioning, so that the incision portion 31 in front of the rear or rear to front wide open in order to be coupled.

In order to prevent the inflating body 20 from being pushed forward or backward of the tubular body when the compression means 30 is coupled, the front part of the gripping portion 19 of the tubular body 10 is prevented from being detached. 17 is formed, and the separation hole 17 is coupled to the inlet 23 of the inflating body 20 to prevent the separation.

Alternatively, the separation preventing means may be a tape for winding and fixing the portion including the front portion or the grip portion 19 of the tubular body 10 and the inlet hole 23 portion of the inflated body 20 together. Can be.

As shown in FIG. 2C and FIG. 4, when the fluid (eg, a molding agent) is injected into the injection unit 11 of the tube 10 through the injection tube 51, the discharge hole 13 may be used. Considering the case in which the exposed portion 25 of the inflatable body 20 is expanded by the discharged fluid,

In one embodiment, the treatment device (A) according to the present invention is inserted in the dorsal side in a form orthogonal to a straight line formed by the spinal column, and the inflated body 20 is expanded in the vertical direction to press the bone network to increase bone density. Is generally used,

Preferably, the inflatable body 20 does not expand as far as possible in front of the vertebral body, ie toward the part where the organ is located.

To this end, it is preferable to introduce an expansion limiting means for preventing the portion of the exposed portion 25 of the inflatable body 20 located in front of the discharge hole 13 of the tubular body 10 to be inflated.

2A, 2B, 2C and 4, the expansion limiting means shown in the fixed ring 41, the fixed ring is a fluid introduced through the injection portion 11 of the tubular body 10 is the fixed ring ( 41 to prevent the inflow to the front end of the inflatable body, the fixing ring 41 may be made of an elastic or inelastic material.

Meanwhile, in order to provide more certainty to the expansion limitation, the coupling ring groove 15 is formed as a fixing means for the fixing ring in front of the discharge hole 13 position of the tubular body 10, and the combined state is assembled in the above state. The fixing ring 41 is located in the ring groove 15.

Furthermore, considering the case of forming a surgical device inlet in the vertebral body using a drill and inserting the front end of the surgical device into the formed inlet, as shown in FIG. 2C, the fixing ring 41 is provided due to the coupling ring groove 15. Since the combined portion and the other portion of the tube maintain a smooth shape, there is no part caught by the vertebral body during insertion or detachment.

The vertebral body treatment apparatus A shown in FIG. 3 is compared with the treatment apparatus shown in FIGS. 2A and 2C,

The pressing means 130 is different from that formed by winding the tape in a spiral shape,

The inclined extension portion 115 is formed by expanding the diameter of the front end portion of the tubular body gradually toward the front end portion after the discharge hole 113 of the tubular body 110 as the fixing means while also introducing the fixing ring 41 as the expansion limiting means. By forming

Prevents the fluid from flowing over the fixing ring, while preventing the front separation of the fixing ring,

It is possible to prevent the holding ring portion from being caught when the vertebral body is inserted due to the shear section having a larger cross-sectional area.

Instead of the shape in which the inclined extension portion 115 is continuously expanded in cross section to the front end portion as shown,

After the cross-sectional area is gradually expanded and peaked at the fixing ring coupling position, the cross-sectional area may be reduced again.

Next, the injection means should be coupled to the injection of the fluid for expansion of the exposed portion 25 of the inflated body 20 through the injection portion 11 of the tubular body 10,

The injection means shown in FIG. 4 is a connection member 50 connected through an injection tube and an injection tube 55 in the form of a syringe equipped with a pressure gauge, and the connection member 50 is an injection portion 11 of the tubular body 10. The injection nozzle 51 has an injection nozzle 51 inserted into the coupling part, and a coupling part 53 formed on the inner circumferential surface of the female screw part 53a coupled to the male screw part 11a formed on the outer circumferential surface of the injection part 11. The form surrounds.

Fluid introduced into the injection portion 11 of the tubular body 10 through the connecting member 50 is discharged to the discharge hole 13 to expand the exposed portion 25 of the inflatable body 20 to the bone of the vertebral body Pushes the reticulum to increase bone density,

The expansion ring does not extend to the front end of the apparatus 10 due to the fixing ring 41 as the expansion limiting means (see the partially enlarged circle “A”).

As a comparative example, however, as shown in the partially enlarged circle “B” of FIG. 4, if necessary, it may be used without a pressing means such as a fixing ring, so that the expansion body is expanded beyond the front end of the tube.

In some cases, the up, down, left, and right directions of the inflated body may be identified from the outside, and the exposing body of the inflated body may be expanded only in a specific direction up, down, left, or right, thereby increasing the accuracy of the procedure.

This expansion direction can be specified through the thickness difference of the inflated body or precise component difference control.

As described above, the vertebral body treatment apparatus according to the present invention is capable of maintaining the shape of the vertebral body only without a probe for maintaining a separate shape, and introduces a compression means to surround most of the tube and to be in close contact with the tube. Induced by the expansion limiting means for preventing the inflating body of the front end portion of the expansion unit and the means for preventing the expansion body is separated when the compression means after the coupling of the inflatable body and the tubular body significantly reduced the manufacturing cost of the product, Ease of use and procedure precision can also be enhanced.

In the above description, although the conventionally known techniques of vertebral body procedures related to the control of bone density are omitted, those skilled in the art will naturally be able to infer and deduce them.

In addition, in the above description of the present invention with reference to the accompanying drawings described with respect to the vertebral body treatment apparatus having a specific shape and structure, but the present invention can be variously modified and changed by those skilled in the art, such variations and modifications of the present invention It should be interpreted as being within the scope of protection.

Claims (6)

A shape maintaining tube body having an injection portion provided at a rear end thereof, and having a discharge hole formed at an outer circumferential surface of the front end portion; An inflatable body inserted into the injection part from the discharge hole side of the tubular body and in close contact with the outer peripheral surface of the tubular body; And Pressing means for maintaining a close state of the inflatable body and the tubular body in a state in which the inflatable body part corresponding to the discharge hole position of the tubular body is exposed; Spinal body treatment device made, including. The method of claim 1, And an inflation limiting means for preventing the inflation portion located at the front end of the conduit from expanding by the fluid flowing through the inlet of the conduit. The method of claim 2, Spinal body treatment apparatus further comprises a separation preventing means for firmly fixed to the outer peripheral surface of the inflatable body located in the rear end of the tubular body. The method of claim 2 or 3, The expansion limiting means is a vertebral body treatment apparatus, characterized in that the fixing ring for pressing the portion of the inflatable body located in the front end of the tubular body. The method of claim 4, wherein Spinal body treatment apparatus, characterized in that the coupling ring groove for the fixing ring is formed at the front end of the tube. The method of claim 4, wherein Spinal body treatment apparatus characterized in that the front end of the tubular body is formed with an inclined extension portion is formed by gradually expanding the diameter of the front end of the tubular body to prevent the separation of the fixing ring.

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