Sleeve fixing structure used in device requiring drilling during bone surgery

Abstract

The present invention relates to a sleeve fixing structure (100) used in a device requiring drilling during bone surgery, which is configured to prevent, after mounting a guide sleeve on an aiming tool, the sleeve from being pushed backward or trembling while implanting a drill or a lag screw. The sleeve fixing structure (100) comprises: a pin hole (h) formed on either side of a receiving space (X1); a tubular body (110) having a pin (P1) coupled to the pin hole (h) and at least one pin hole (112) to be fixed by the pin (P1), and having formed, under the pin hole (112), a ball hole (111) to be inserted into the pin hole (112) and into which one or more balls (120) are inserted; an elastic body (200) installed to be in contact with one end of the tubular body (110); and a knob (300) into which the elastic body (200) and the tubular body (110) are inserted and installed, wherein the knob (300) forms a storage space (301) for storing the elastic body (200) and comprises: a bushing part (310) formed at the same position as the pin hole (112) on the side wall of the storage space (301) and including a slot (311) into which the pin (P1) is inserted so as to move within a certain space; and an adjusting part (320) integrally formed with the bushing part (310) and having a penetrating hole (321) formed to allow the sleeve (30) to be inserted thereinto.

Description

Sleeve fixation structure used in devices requiring drilling during bone surgery

[0001] The present invention relates to a sleeve fixing structure used in a device requiring drilling during bone surgery. More specifically, the present invention relates to a sleeve fixing structure used in a device requiring drilling during bone surgery, which can prevent a guide sleeve from being pushed back or shaken when a drill or rag screw is inserted after the guide sleeve is mounted on an aiming device.

[0002] Bone fixation and stabilization in living organisms typically involves implants (e.g., intramedullary nails) inserted into the target bone. Mechanical aiming devices are often used to assist in aligning the implant with or within the target bone.

[0003] These aiming devices typically include a protective sleeve inserted through a hole facing the implant to maintain the desired implant position relative to the aiming device and to provide a barrier to protect soft tissue from damage during implantation. These protective sleeves typically have openings for introducing drills, screws, and other instruments or implants.

[0004] Currently available sighting mechanisms provide a tensioning mechanism such as a spring, a set-screw, or a spring-loaded contact element configured to tension the outer wall of the protective sleeve when it is inserted through the sighting arm.

[0005] In particular, such a turning mechanism must be capable of applying a constant frictional force to the protective sleeve against the implant during the entire insertion process via the aiming device or of being selectively engaged or disengaged by alternative means.

[0006] For example, as shown in Fig. 1, since there is no separate device to fix the guide sleeve that guides the rag screw, the structure requires the user to hold it with his / her hand during the procedure, which is inconvenient to use and may cause surgical failure if the sleeve comes out backwards and falls off.

[0007] In addition, as shown in (a) of Fig. 2, the sleeve was fixed by turning the lower handle of the aiming mechanism to push the cylinder vertically up, but at this time, the sleeve moved upwards of the cylinder, so a problem occurred in which the central axis of the sleeve was tilted to one side.

[0008] In addition, in the case of a fixation device that causes the sleeve to be tilted in one direction, as in (b), a problem occurred in which drilling was impossible because the implant and sleeve were deviated from the central axis.

[0009] In general, in fracture surgery, the targeting guide is used to align the central axes of the implant and sleeve to ensure successful drilling, but the structure of the sleeve fixation device used in the past was structured in a way that affected the original purpose of targeting.

[0010] Accordingly, in order to solve the above problem, the aiming mechanism (1) shown in Korean Patent No. 10-2015-0113054 is a mechanism that functions as a ticketing mechanism for a rag screw (12) coupled to a metal pin (10), and has an aiming arm (21) provided on one side of the body (20) and a barrel part (22) provided on the other side, and a guide sleeve (30) that guides the metal pin (10) and the rag screw (12) is provided at the end of the aiming arm (21), and the guide sleeve (30) is attached and detached by a knob (40).

[0011] However, the above aiming arm (21) is usually prevented from shaking or sliding by tightening the knob (40) when fastening the guide sleeve (30), but in order to fix the guide sleeve (30), the knob (40) must be tightened by turning it several times, and when detaching, the knob (40) must be loosened again, which is inconvenient.

[0012] Accordingly, the present invention has been created to solve the above-described problems of the related art, and provides a sleeve fixing structure used in a device requiring drilling during bone surgery, which prevents the sleeve from being pushed back or shaken when drilling or inserting a rag screw after mounting the guide sleeve on a surgical aiming device, and also helps in stable drilling, convenience of use, and easy insertion of a fixing screw in combination with a targeting guide during fracture treatment.

[0013] In order to achieve the above technical task, the sleeve fixing structure (100) used in a device requiring drilling during bone surgery of the present invention is:

[0014] Pinholes (h) formed on both sides of the storage space (X1); and

[0015] A pin (P1) coupled to the above pinhole (h); and

[0016] A tube (110) having one or more pin holes (112) for fixing by the pin (P1) and having a ball hole (111) formed at a lower position of the pin hole (112) for inserting one or more balls (120);

[0017] One or more balls (120) inserted into the above pinhole (111); and

[0018] An elastic body (200) installed in contact with one end of the above-mentioned body (110); and

[0019] A knob (300) into which the elastic body (200) and the tube body (110) are inserted and installed;

[0020] It consists of.

[0021] The above knob (300) is;

[0022] It is composed of a bushing part (310) including a long hole (311) formed in the same position as the pin hole (112) on the side wall of the storage space (301) to form a storage space (301) for storing the elastic body (200) and formed so as to be able to move within a certain space by being fitted into the pin (P1); and an adjusting part (320) formed integrally with the bushing part (310) and having a through hole (321) formed for inserting a sleeve (30).

[0023] The above control unit (320) is characterized in that an indicator unit (321) is formed to enable the locking state to be identified, and an inclined surface (311a) is formed at one end to pressurize the ball (120).

[0024] The sleeve fixing structure used in a device requiring drilling during bone surgery of the present invention having the above-described configuration can obtain the following effects.

[0025] First, it can prevent the sleeve from being pushed back or shaking when drilling or installing a rag screw.

[0026] Second, it was designed to help with stable drilling, ease of use, and easy insertion of fixation screws when combined with a targeting guide during fracture treatment.

[0027] Third, stable drilling is possible by the ball that gathers to the center without the problem of one-sided bias, which is a disadvantage of conventional sleeve fixing devices, and unlike the method of fixing by rotating the handle several times, which is a disadvantage of conventional fixing devices, the sleeve fixing and releasing operation is possible by the user by rotating the handle only 1 / 4 turn.

[0028] Fourth, the structure allows the fixture to be assembled and disassembled as needed, allowing for supplementary targeting guides in various areas.

[0029] Fifth, the present invention can be applied not only to sleeves used in targeting devices, but also to all devices requiring the formation of a central axis for drilling or other devices.

[0030] Figure 1 is a drawing showing a conventional surgical aiming device.

[0031] Figure 2 is a drawing showing another conventional surgical aiming device.

[0032] Figures 3 (a) to (c) are drawings showing a sleeve fixing structure used in a device requiring drilling during bone surgery according to the present invention.

[0033] (a) is an exploded perspective view, (b) is a partial cross-sectional view to explain the sleeve fixing structure, and (c) is a drawing showing only the knob.

[0034] Figure 4 is a drawing showing a sleeve fixing structure used in a device requiring drilling during bone surgery according to the present invention applied to a surgical aiming device.

[0035] FIG. 5 is a drawing showing another embodiment of a sleeve fixing structure used in a device requiring drilling during bone surgery according to the present invention, which is a drawing showing a state in which it is applied to a targeting guide.

[0036] FIG. 6 is a drawing showing another embodiment of a sleeve fixing structure used in a device requiring drilling during bone surgery according to the present invention, and is a drawing that can perform the role of a stopper by being combined with a drill bit.

[0037] FIG. 7 is a drawing showing another embodiment of a sleeve fixing structure used in a device requiring drilling during bone surgery according to the present invention, and is a drawing showing that it is used for a guide pin guide to perform a holder function.

[0038] Hereinafter, the configuration of the sleeve fixing structure used in the device requiring drilling during bone surgery of the present invention will be described in detail with reference to the drawings.

[0039] However, the disclosed drawings are provided as examples to ensure that those skilled in the art can sufficiently convey the spirit of the present invention. Therefore, the present invention is not limited to the drawings presented below and may be embodied in other aspects.

[0040] In addition, unless otherwise defined, terms used in the specification of the present invention have meanings commonly understood by a person of ordinary skill in the art to which the present invention pertains, and detailed descriptions of known functions and configurations that may unnecessarily obscure the gist of the present invention in the following description and accompanying drawings are omitted.

[0041] The present invention is a sleeve fixing structure used in a device that requires drilling during bone surgery, and as illustrated in FIG. 3, it comprises a storage space (X1) formed in an object (X) for installing a sleeve (S) and having a through hole formed therein, and a sleeve fixing device (100) installed in the storage space (X1) and used to fix the sleeve (S).

[0042] At this time, a fixing hole (h) for installing at least one fixing pin (P) is formed on the side wall of the storage space (X1) formed in the object (X).

[0043] The above fixed pin (P) is fitted into a pin hole (112) formed in the pipe body (110) and a long hole (311) formed in the knob (300) described below to prevent the pipe body (110) and the knob (300) from being detached.

[0044] The above sleeve fixing device (100) is composed of a pipe body (110) having a pin hole (h) formed on both sides of a storage space (X1), a pin (P1) coupled to the pin hole (h), and at least one pin hole (112) for fixing by the pin (P1), a ball hole (111) formed at a lower position of the pin hole (112) for inserting at least one ball (120), at least one ball (120) inserted into the pin hole (111), an elastic body (200) installed to be in contact with one end of the pipe body (110), and a knob (300) into which the elastic body (200) and the pipe body (110) are inserted.

[0045] The above-mentioned body (110) is formed in a cylindrical shape with a diameter smaller than the storage space (X1), and has a step portion (113) formed at one end.

[0046] The above elastic body (200) is installed as a compression spring to counteract the pressing of the knob (300).

[0047] The above knob (300) is formed with a storage space (301) for storing the elastic body (200), as shown in (a) or (c) of FIG. 3, an elongated hole (311) formed at one end in the same position as the pin hole (112), a pin (P1) fitted into the elongated hole (311) and a bushing part (310) formed so that the pin (P1) can move through a certain space as a guide, and an adjusting part (320) formed integrally with the bushing part (310) and having a through hole (321) for inserting a sleeve (30).

[0048] The above control unit (320) is provided with an indicator (322) to enable the locking state to be identified, and as shown in (c) of FIG. 3, an inclined surface (311a) is formed at one end of the bushing unit (310) to pressurize the ball (120) when the control unit rotates clockwise, thereby contacting the outer diameter of the sleeve (30) to improve the fixing force of the sleeve.

[0049] Figure 4 is a drawing showing an example of applying a sleeve fixing structure used in a device requiring drilling during the above-mentioned bone surgery.

[0050] More specifically, FIG. 4 shows a surgical aiming device in which a sleeve fixing structure used in a device requiring drilling during bone surgery of the present invention is applied, and is applied to an aiming device comprising a body (20) equipped with an aiming arm (21) and a barrel portion (22), a guide sleeve (30) provided at the end of the aiming arm (21) to guide a metal nail and a rag screw, and a knob (300) for attaching and detaching the guide sleeve (30).

[0051] An embodiment of the present invention will be described with reference to FIG. 3 as follows.

[0052] First, as shown in Fig. 4 or Fig. 3 (b), the sleeve (30) is inserted through the hole (321) formed in the knob (300).

[0053] As shown in (b) of the following Figure 3, when the knob (300) is rotated in the direction of arrow a, the knob (300) moves against the elastic body (200) and moves in the direction of arrow b.

[0054] Then, the knob (300) is fixed to the pin (P1), and the long hole (311) formed in the bushing part (310) rotates clockwise (arrow a) using the pin (P1) as a guide, and the rotation is stopped when the pin (P1) comes into contact with one end of the long hole (311).

[0055] In this state, the sleeve (30) is locked, and the ball (120) is pressed along the inclined surface (311a) formed at one end of the bushing portion (310), thereby fixing the sleeve (30) more firmly.

[0056] This is because the ball (120) comes into contact with the outer diameter of the sleeve (30), generating a fixing force.

[0057] At this time, the user can check whether or not it is locked through the display (322) formed on the knob (300).

[0058] Therefore, as described above, by using the sleeve fixation structure of the present invention for fracture treatment, it can play an important role in providing a passageway so that the intramedullary fixation nail (implant) and the fixation screw (interlocking screw) can precisely intersect and fix the bone when performing drilling.

[0059] That is, the sleeve fixing devices of existing products were not structured to align the inner diameter center of the sleeve with the hole center of the implant when drilling, which created a possibility of product damage and drilling failure when the drill bit came into contact with the implant through which it was to pass.

[0060] Accordingly, the present invention has invented a central sleeve fixation device having a ball facing the center of the hole to improve this, and this can be combined with a targeting guide during fracture treatment to help with stable drilling, ease of use, and easy insertion of a fixation screw.

[0061] FIG. 5 is a drawing showing another embodiment of a sleeve fixing structure used in a device requiring drilling during bone surgery according to the present invention. This is a drawing showing a state in which it is applied to a targeting guide, and the operating method is the same as in this embodiment.

[0062] FIG. 6 is a drawing showing another embodiment of a sleeve fixing structure used in a device requiring drilling during bone surgery according to the present invention, which is configured to perform the role of a stopper by being combined with a drill bit.

[0063] FIG. 7 is a drawing showing another embodiment of a sleeve fixing structure used in a device requiring drilling during bone surgery according to the present invention, and is a drawing showing that it is used for a guide pin guide to perform a holder function.

[0064] In this way, the sleeve fixing structure used in a device requiring drilling during bone surgery according to the present invention can be applied and used in various devices.

[0065] In the above description, the configuration and operation of the sleeve fixing structure used in the device requiring drilling during bone surgery of the present invention have been described in detail with reference to the attached drawings. However, the present invention can be modified, changed and substituted in various ways by those skilled in the art, and such modifications, changes and substitutions should be interpreted as falling within the scope of protection of the present invention.

[0066] [Explanation of symbols]

[0067] 30: Sleeve 100: Sleeve fixing device

[0068] 110: Body 111: Ball hole

[0069] 112: Pinhole 113: Single chin

[0070] 120: Ball 200: Elastic

[0071] 300: Knob 301: Storage space

[0072] 310: Bushing 311: Long hole

[0073] 320: Control section 321: Hole

[0074] 322: Display P1: Pin

[0075] h: pinhole X: object

[0076] X1: Storage space

Claims

1. In a sleeve fixation structure used in a device requiring drilling for fracture treatment, The above sleeve fixing structure; A storage space formed in an object to which the sleeve is to be installed and having a through hole formed therein; and A sleeve fixing device installed in the above storage space and used to fix the sleeve; A sleeve fixation structure used in a device requiring drilling during bone surgery, characterized by comprising:

2. In paragraph 1, The above sleeve fixing device; Pinholes formed on both sides of the above storage space; and a pin coupled to the above pinhole; and A tube having at least one pinhole for being fixed by the pin, and having a ball hole formed at a position below the pinhole for inserting at least one ball; One or more balls inserted into the pinhole; An elastic body installed in contact with one end of the above-mentioned body; and A knob into which the elastic body and the tube are inserted; A sleeve fixation structure used in a device requiring drilling during bone surgery, characterized by comprising:

3. In paragraph 2, The above knob; A bushing part having a storage space for storing the elastic body and a long hole formed at one end at the same position as the pin hole and formed so as to be inserted into the pin and move through a certain space; and A sleeve fixing structure used in a device requiring drilling during bone surgery, characterized in that it comprises an adjusting portion formed integrally with the bushing portion and having a through hole for inserting a sleeve.

4. In paragraph 3, A sleeve fixing structure used in a device requiring drilling during bone surgery, characterized in that the above-mentioned adjusting part has an indicator formed therein to enable the locking state to be identified.

5. In paragraph 3, A sleeve fixing structure used in a device requiring drilling during bone surgery, characterized in that an inclined surface is formed on the lower part of the above-mentioned adjusting section.

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