KR200353368Y1 - Double needle apparatus for bone cement injection decompressed - Google Patents

Abstract

The present invention relates to a mechanism for injecting a reinforcement into the bones of the human body to effectively recover foreign substances such as blood, crushed matter, air, reinforcing sludge, etc. generated during puncturing with the stylet or feeding the reinforcement into the bone with the injector, thereby preventing the reinforcement injection. By discharging the foreign substances to the outside to relieve excessive pressure caused by the injection of the adjuvant and to inject the adjuvant evenly to the necessary elements to maximize the therapeutic effect.

The present invention provides a bone reinforcement injection device including an outer needle and an inner needle, the main hole at the outer needle end; At least one slot hole at a side surface; The distal end of the inner needle is a double needle device to reduce the bone reinforcing agent injection pressure by collecting the foreign matter generated in the bone at the time of bone reinforcement injection through the slot hole of the side. The dual needle device for reducing the bone reinforcement injection pressure of the present invention by installing one or more slot holes in the outer needle, and by providing a projection at the distal end of the inner needle to effectively recover the foreign substances generated during the bone reinforcement injection process The reinforcing agent injection pressure can be largely eliminated.

Description

DOUBLE NEEDLE APPARATUS FOR BONE CEMENT INJECTION DECOMPRESSED}

The present invention relates to a mechanism for injecting a reinforcement into the bone of the human body in general, the bone reinforcement injection needle is composed of the outer needle and the inner needle in the form of a tube, the outer needle is a T-shaped for inserting the needle into the bone It is used as a tool to puncture bone using a handle and a stylet combined with the handle, and after drilling, an inner needle is inserted and the inner needle and a syringe are connected to inject a cement into the bone. It is used as a means for.

Conventionally, the outer needle has one or more slot holes (Utility Model Registration No. 20-0178915) formed at a distal end of the distal opening, so that when the bone reinforcement is injected into the bone along the inner needle, By distributing and supplying the inner needle of the inner needle through the slot hole of the outer needle, it was possible to reduce the injection pressure at the beginning of the adjuvant injection. However, the slot hole only performs the function of injecting the adjuvant. Due to the obstacles such as blood, crushed material, and air generated in the process, a great pressure is required to inject the reinforcement, and the quality of the reinforcement is degraded due to foreign matter such as blood, crushed material, air, and reinforcing sludge.

In addition, the conventional structure for recovering foreign substances generated during puncture of the bone and injecting the reinforcing agent has the concept that the inner needle is simply made of a single-tube tube to recover the gap between the one-shaped inner needle and the outer needle (Utility Model Registration No. 20-0317729). ), But there is no separate foreign matter backflow prevention and discharge device as it flows back into the bone as it is.

Therefore, the conventional double needle structure does not have a separate system for recovering foreign substances generated during the reinforcing agent injection process, so the injection pressure is continuously maintained. It could not be effectively resolved, and it was difficult to inject safe and sufficient reinforcement by leaking reinforcement out of bone due to excessive pressure during reinforcement injection.

The present invention is designed to solve the problem of the 1-shaped tube needle for bone reinforcement injection, effectively recovers foreign substances such as blood, debris, air, reinforcement sludge, etc. generated during drilling into the stylet or feeding the reinforcement into the bone with the injector. By discharging foreign matters that interfere with the adjuvant injection to the outside to relieve excessive pressure caused by the adjuvant injection and to inject the adjuvant evenly to the necessary elements to maximize the therapeutic effect.

Therefore, an object of the present invention is to provide a mechanism for injecting a reinforcing agent into the bone of the human body and a new mechanism for puncturing the bone and recovering foreign substances generated during injecting the reinforcing agent.

1: Cross-sectional view (triangular method) of the outer needle 100 of the present invention

Figure 2: Cross section of the stylet (triangular method)

3 is an exploded view of the outer needle, the stylet and the pin of the present invention

4: Cross section of the pin (triangular method)

Figure 5: Cross-sectional view (triangular method) of the outer needle, the stylet and the pin combined

Figure 6: perspective view of the inner needle of the present invention

Fig. 7: Cross section of inner needle (triangular method)

Figure 8: Configuration mechanism of the outer needle and the inner needle of the present invention

9 is a perspective view of the combination of the outer needle and the inner needle of the present invention (Example 1)

10 is a cross-sectional view of Embodiment 1 of the present invention.

11 is a perspective view of the combination of the outer needle and the inner needle of the present invention (Example 2)

12 is a cross-sectional view of Embodiment 2 of the present invention.

Figure 13: A state of use to recover the foreign matter while injecting a reinforcing agent into the bone using the double needle of the present invention

100: external needle, 120: stylet, 130: pin, 200: inner needle, 300: injector, 400: reinforcing agent, 500: foreign matter

The dual needle device for reducing the bone reinforcement injection pressure of the present invention is composed of an outer needle (Inside needle) and the inner needle (Inside needle).

A feature of the present invention lies in a structure and a device that continuously reduce the injection pressure during bone reinforcement injection by installing a foreign substance recovery system by removing the structure of the external needle and the inner needle for bone reinforcement injection from the conventional reinforcement supply-oriented structure. . Then look at the structure and shape of the outer needle of the present invention as follows.

1 is a cross-sectional view showing the shape and shape of the outer needle 100 of the present invention in a triangular method.

The outer needle 100 of the present invention is made of a metal (Metal needle) as a needle (Approach needle) for access to the bone, T includes a coupling means for coupling the stylet (120) for drilling a bone A magnetic handle 110; Tubular needle 117; At the distal end there is a main hole (Main hole 118)); The side portion is composed of one or more slot holes (119).

The T-shaped handle 110 of the outer needle is integrally connected with the tubular needle 117, and includes a coupling means for coupling the drilling stylet 120, so that the handle 110 when drilling the bone of the human body Repeating the rotary motion to the end portion 129 of the stylet 120 is able to puncture the bone, and after drilling the stylet 120 is separated from the T-shaped handle 110 of the outer needle 100 Pull out.

Figure 2 is a cross-sectional view showing the configuration of the stylet 120 of the present invention in a triangular method.

Bone drilling stylet 120 in the present invention is a handle 121 including the coupling means coupled to the T-shaped handle 110 of the outer needle (100); Formed longer than the outer needle, the tip is composed of a metal rod (127) having an angled and pointed distal end (129) to rotate in combination with the outer needle (100) when drilling the bones of the human body Repeat the exercise to drill the bones.

3 is an exploded perspective view showing the configuration of the outer needle 100, the stylet 120 and the pin 130 of the present invention.

Means for coupling the stylet 120 and the outer needle 100 in the present invention is specifically configured as described below.

Coupling means for coupling the outer needle and the bone drilling stylet includes a means for preventing the vertical movement of the stylet and independent rotation prevention means.

The stylet 120 is received in the lumen 116 of the outer needle 100 for bone drilling, and the means for fixing the stylet 120 with the outer needle 100 is stylet 120 when bone is drilled. And uneven groove 111 formed on both sidewalls of the groove formed in the hub (Hub, located in the upper portion of the handle) of the T-shaped handle 110 of the outer needle 100, to prevent the vertical movement of the needle; Pin to fix the ja-shaped protrusion 123 by being inserted into the bottom of the stylelet handle 121 and being reciprocated up and down while being separated into a ja-shaped protrusion 123 and a star body formed under the stylet handle 121 ( Pin 130) is provided with a coupling means. In addition, in order to prevent the independent rotation of the stylet 120 when the bone is drilled, both iron parts 122 of the stylet handle are inserted into the grooves of the yaw part 112 of the T-shaped handle of the outer needle. And anti-rotation means having anti-rotation jaws shaped to be inserted.

Figure 4 is a cross-sectional view showing the configuration of the pin 130 for fixing the stylet 120 of the present invention in a triangular method.

The pin 130 for fixing the stylet 120 in the present invention has a cylindrical shape having a latch 131 for closely contacting the ┛┗-shaped protrusion 123 formed at the bottom of the stylet handle 121. Protrusions 132 are formed at both sides to increase friction with the fingers, and the pins are formed at the bottom of the upper plate 122 of the handle 121 of the stylet to couple the stylet 120 to the outer needle 100. And ┛┗ is assembled on the protrusion 123.

Looking at the action of the coupling means of the outer needle 100 and the bone drilling stylet 120, the pin 130 of Figure 3 is first assembled to the stylet 120 in a state of being assembled under the handle 121 of the stylet When inserted into the outer needle 100, the pin 130 is moved downward with a thumb or index finger, the bar 131 of the pin moves the ┛┗-shaped protrusion 123 of the bottom of the stylet handle of the outer needle handle 110 The outer needle 100 and the stylet 120 are firmly coupled by being in close contact with the uneven groove 111 formed on both sidewalls of the groove formed in the hub.

Figure 5 is a cross-sectional view showing the triangular shape of the coupling state in which the outer needle 100 and the stylet 120 of the present invention is fixed by the pin 130.

The tubular needle 117 of the outer needle becomes the housing of the stylet 120 when the bone is bored, and the housing of the inner needle 200 when the bone reinforcement is injected, the main hole 118 at the distal end and the slot hole at the side. 119 is formed.

The main hole 118 of the distal end of the outer needle 100 is a hole located at the end of the outer needle, and is open in the axial direction of the outer needle 100, and the reinforcement 400 passing through the inner needle 200 into the bone. It becomes the main route to supply.

The slot hole 119 of the side portion of the outer needle 100 is a hole formed in the side end of the needle (distal) also serves to provide a passage function for supplying the reinforcement 400 from the side according to the position of the end of the inner needle 200 Or, it serves as a passage function for recovering the foreign matter 500, such as blood sludge generated during the puncture of the bone, reinforcement sludge (Sludge) generated during the supply of air and reinforcement. In particular, the slot hole 119 opened in various directions on the side surface of the outer needle 100 may be injected while navigating in various directions to fill the reinforcement when the reinforcement 400 is injected, and conversely, the foreign matter 500 ) Recovery has the advantage of recovering foreign substances existing in various directions.

The position and the number of the slot holes 119 of the outer needle 100 may be formed differently, and may be selected and used according to the purpose according to the treatment situation.

It is to be clear here that the slot hole 119 of the outer needle of the present invention is not always used only for supplying the reinforcement 400 or collecting the foreign matter 500, and also used as a slot hole for supplying the reinforcement according to the procedure. It should be noted that it may be used as a slot hole for collecting foreign substances. When the foreign matter 500 is recovered, the slot hole 119 mainly discharges foreign substances such as blood, crushed material, air, reinforcing sludge, etc., which are obstacles to the reinforcing agent injection, but a large amount of reinforcing agent must be injected at the same time according to the sample situation. In this case, the inner needle 200 may be retracted to the rear of the slot hole 119 so that the entire slot hole can be used as a slot hole for supplying the reinforcing agent, thereby reducing the injection pressure of the reinforcing agent 400, increasing the simultaneous injection area, and effectively in the desired direction. Allows you to inject a supplement.

In addition, when the reinforcing agent 400 being injected into the sample hardens, the reinforcing agent 400 is re-punched by reattaching the stylet 120 to the outer needle to reinforce the reinforcing agent to the necessary portion through the slot hole 119 on the side. The additionally injectable slot hole 119 of the outer needle 100 has the advantage of providing a variety of reinforcing agent injection path.

In addition, by installing an injector (Syringe, 300) connection thread 113 in the upper center hub (Hub) of the outer needle handle 110 of the present invention can directly inject the reinforcing agent 400 through the outer needle (100). The external needle was also used as a cannula.

Next, look at the inner needle 200 of the present invention.

The inner needle 200 of the present invention serves as a supply tube (Suppling neddle) for supplying a reinforcing agent 400 into the bone after bone drilling, and serves as a cannula (Metal needle), and is an injector (Syringe, A handle 211 including a connecting means; Tubular needle 217; The distal tip (Tip) of the needle is provided with an opening 218 with a projection 219 formed to block backflow of the reinforcement.

Figure 6 shows a perspective view of the inner needle 200 of the present invention,

7 is a cross-sectional view showing the configuration of the inner needle 200 of the present invention in a triangular method.

Injector (Syringe, 300) is connected to the inner needle 200 as a connection means is known as a device for injecting the reinforcement 400 into the bone through the inner needle.

The injector connecting means is composed of a male screw 212 formed at the upper end (Proximal) of the handle 211 of the inner needle 200 and a female screw 310 formed at the bottom of the injector. The reverse is also possible.

The inner needle handle 211 inserts, advances, retracts, or separates the tube 217 of the inner needle 200 into the lumen 116 of the outer needle, or connects the inner needle 200 to the injector 300. It is a means of operating the inner needle.

The tubular needle 217 of the inner needle 200 is smaller in diameter than the outer needle 100, the length may be larger than the outer needle 100, or may be smaller and is received in the lumen 116 of the outer needle, The outer needle 100 is made with a clearance to secure a space for recovering the foreign matter 500, such as the sludge in the bone reinforcement, the lumen 216 of the inner needle 200 is injector 300 at the time of bone reinforcement injection In order to be a cannula of the reinforcing agent 400 to be injected from the tip end portion (tip) has an opening 218 is formed with a projection 219 to block the back flow of the reinforcing agent.

The opening 218 in which the protrusion 219 is formed at the distal end of the inner needle 200 serves as a passage for transmitting the reinforcing agent 400 to the main hole 118 and the slot hole 119 of the outer needle 100. The protrusion 219 prevents the reinforcement 400 from flowing back behind the opening 218. In addition, the protrusion 219 formed in the opening 218 at the distal end of the inner needle 200 passes through the slot hole 119 of the outer needle behind the protrusion 219 due to the discharge pressure generated when the reinforcing agent 400 is filled. The collected foreign matter 500 is trapped in the space (100-200) between the outer needle 100 and the inner needle 200 and then discharged to the body.

The shape of the protrusion 219 of the tip of the inner needle 200 is a horn type (an enlarged view A in FIG. 7), or a funnel type (an enlarged view in FIG. 7). B), it can be molded into various shapes such as a barrel type (expanded C in Fig. 7).

7 shows that the shape of the protrusion 219 of the distal end of the inner needle 200 is a horn type.

7 shows that the shape of the projection 219 at the distal end of the inner needle 200 is a funnel type.

7 is an enlarged view of the shape of the projection 219 of the distal end of the inner needle 200 is a cylindrical type (BLUNT BARREL TYPE).

As described above, various forms of the distal end protrusion 129 of the inner needle have been illustrated.

Next, the structure and function of the distal end protrusion 129 of the inner needle when the inner needle 200 is coupled to the outer needle 100 will be described.

The inner needle 200 is inserted into the tube 116 of the outer needle 100 to inject a reinforcement into the bone.

8 illustrates a mechanism of the structure and function of the opening 218 of the inner needle, the main hole 118 and the slot hole 119 of the inner needle when the inner needle 200 of the present invention is inserted into the outer needle 100. It is shown. That is, FIG. 8 conceptually shows a supply line of the reinforcing agent 400 through the inner needle 200 and a return line of the foreign matter 500 through the slot hole 219 of the outer needle 100. It is displayed.

9 is a perspective view of the combination of the outer needle and the inner needle shown in the configuration of the outer needle 100 and the inner needle 200 of Figure 8 applied to the embodiment (1) in the present invention.

FIG. 10 shows a cross sectional view of the combination of both needles of FIG.

The length of the outer needle tube and the inner needle tube can be configured in different combinations according to the treatment situation.If the length of the outer needle tube is constant, the length of the inner needle tube can be selected to vary the length of the inner needle distal protrusion. The position can be adjusted, and the position of the distal protrusions can be freely controlled by selecting the inner needle of the appropriate length according to the treatment situation and the application.

Then, the function of the slot hole 119 of the outer needle according to the position of the distal protrusion 219 of the inner needle will be described with reference to the drawing.

As shown in FIGS. 9 and 10, the length of the inner needle tube 217 is shorter than that of the outer needle tube 117 when the two needles are coupled, so that the protrusions 219 of the inner needle are connected to the slot holes 119 of the outer needle. In the case of being located between the slot holes, the slot hole 119 at the rear of the inner needle protrusion 219 serves for recovery, and the slot hole 119 in front of the inner needle protrusion 219 serves for supply. Done. Also, when both needles are coupled, the length of the inner needle tube 217 is shorter than that of the outer needle tube 117, and all slots are provided when the protrusion of the inner needle 219 does not reach any of the slot holes 119 of the outer needle. The hole acts as a reinforcing agent supply.

In the cross-sectional view of FIG. 10, when the distal end protrusion 219 of the inner needle is in the X position, the slot holes 119, 1, 2, 3, and 4 all serve as slots for reinforcing agent supply, and the protrusion 219. Is in the Y position, the slot holes 1,2 perform the function of the slot hole for collecting the foreign matter, and the slot holes 3, 4 perform the function of the slot hole for the reinforcement supply. In addition, when the projection 219 is in the Z position, the slot holes 119, 1,2, 3, and 4 all serve as slots for collecting foreign matter, and only the main hole 118 of the outer needle is used to supply the reinforcing agent. It performs slot hole function.

FIG. 11 is a perspective view of Embodiment 2 when the length of the inner needle tube 217 is longer than the length of the outer needle tube 117 when both needles are engaged, and FIG. 12 is a cross sectional view of FIG.

As shown in FIGS. 11 and 12, when the length of the inner needle tube 217 is longer than or equal to the length of the outer needle tube 117 when the two needles are coupled, the protrusions 219 of the inner needle are formed in the main hole of the outer needle. 118 is exposed through all the slot holes 119 of the outer needle and the space (100-200) between the two needles to act as a foreign matter recovery.

Accordingly, when the length of the inner needle tube 217 is adjusted to adjust the position of the distal protrusion 219, the slot hole 119 of the outer needle in front of the distal protrusion 219 acts as a slot hole for reinforcement supply. Since the slot hole 119 of the outer needle behind the distal protrusion 219 of the inner needle acts as a slot hole for collecting the foreign matter, when the reinforcing agent 400 is injected, the inner needle 200 having a length suitable for the treatment purpose is used. By injecting the adjuvant 400 to select can be an effective procedure.

When the reinforcing agent 400 is injected, the inner needle tube 217 is inserted into the outer needle tube 117, and the injector 300 is attached to the thread 212 installed at the upper end of the handle 211 of the inner needle. By connecting the reinforcing agent 400 is injected.

Figure 13 shows a state diagram used to recover the foreign matter 500 while injecting the reinforcing agent 400 to the bone using the double needle of the present invention.

According to the present invention, when the slot hole 119 of the outer needle acts as a slot hole for collecting the foreign matter 500, the foreign matter generated during the bone drilling process while supplying the reinforcing agent 400 to the inside of the bone to the injector 300 ( 500 is configured to be recovered through the slot hole 119 of the outer needle side.

Therefore, the foreign matter 500 recovered through the slot hole 119 is discharged into the space 100-200 between the outer needle 100 and the inner needle 200, thereby continuously injecting the reinforcing agent 400 while injecting the reinforcing agent 400. This will reduce the pressure.

The dual needle device for reducing the bone reinforcement injection pressure of the present invention by installing one or more slot holes in the outer needle, and by providing a projection at the distal end of the inner needle to effectively recover the foreign substances generated during the bone reinforcement injection process The reinforcing agent injection pressure could be largely eliminated.

In addition, by using internal needles of various lengths selectively, the function of the slot hole can be changed for supply or retrieval, etc. according to the treatment situation, and the direction of the slot hole can be changed to the desired place by adjusting the external needle. By supplying the reinforcement using the slot hole of the reinforcement has the advantage that can be supplied to the required element in the desired direction.

In addition, by effectively recovering foreign substances generated during the bone reinforcement injection process, the treatment quality of the bone reinforcement can be improved, and the reinforcing agent can be effectively injected to the desired place by preventing the shaking of the needle by reducing the bone reinforcement injection pressure during the procedure. .

Claims (10)

A bone reinforcement injection device comprising an outer needle and an inner needle, comprising: a main hole at an outer needle distal end; At least one slot hole at a side surface; Dual needle device including a protrusion at the distal end of the inner needle to reduce the bone reinforcement injection pressure by combining the two needles to recover the foreign substances generated in the bone during the injection of the bone reinforcement through the slot hole in the side 2. The outer needle of claim 1 further comprising: a T-shaped handle comprising coupling means for engaging the bone drilling stylet; Tubular needles; A main hole at the distal end; Dual needle device on the side to reduce bone reinforcement injection pressure including one or more slot holes The inner needle of claim 1 further comprising: a handle comprising an injector connecting means; Tubular needles; Dual needle device for reducing bone reinforcement injection pressure comprising a protruding opening at the distal end The method of claim 2, wherein the coupling means of the T-shaped handle and the puncturing stylet of the outer needle includes: uneven grooves formed on both sidewalls of the groove formed in the hub of the T-shaped handle to prevent vertical movement of the stylet; And a coupling means consisting of a pin-shaped protrusion formed on the handle of the stylet and a star body, which are inserted into the handle of the stylet and reciprocated up and down to fix the pin-shaped protrusion. Bone reinforcement injection pressure including anti-rotation means comprising anti-rotation jaws formed so that both iron portions of the stylet handle are inserted into the grooves of the T-shaped handle of the outer needle to prevent independent rotation. Reducing dual needle device 4. The dual needle device of claim 3 wherein the handle of the inner needle and the injector connection means are threaded to reduce bone reinforcement injection pressure. 4. The dual needle device of claim 1 and 3, wherein the distal protrusion of the inner needle is of a ROUND HORN TYPE to reduce bone reinforcement injection pressure. 4. The dual needle device of claim 1 and 3, wherein the distal end of the inner needle is of a TAPER FUNNEL TYPE to reduce bone reinforcement injection pressure. 4. The dual needle device of claim 1 and 3, wherein the distal end of the inner needle is a BLUNT BARREL TYPE to reduce bone reinforcement injection pressure. 2. The dual needle device of claim 1 wherein the length of the inner needle tube is greater than or equal to the length of the outer needle tube when the two needles are engaged, thereby reducing bone reinforcement injection pressure in which the space between all slot holes and both needles serves for recovery. The method of claim 1, wherein the length of the inner needle tube is shorter than the length of the outer needle tube when the two needles are engaged, and the slot hole at the rear of the inner needle protrusion serves for retrieval, and the slot hole at the front of the inner needle protrusion is Dual needle device to reduce bone reinforcement injection pressure acting for supply