An extension device for a medical locking sleeve

Abstract

The application discloses a lengthening device of a medical locking sleeve and belongs to the technical field of locking sleeves, and has the technical scheme as follows: a locking sleeve body, which comprises: an extension rod, which is provided with a hollow hole; a clamping piece, which is arranged at the end of the extension rod; and a fixing piece, which is movably arranged on the extension rod; wherein the end of the locking sleeve body is provided with a handle part, the handle part is provided with a first horizontal hole, and the clamping piece is provided with a corresponding boss of the first horizontal hole. The application can reduce the different lengths of locking sleeves that need to be prepared for orthopedic surgery.

Description

Technical Field

[0001] This application belongs to the technical field of locking sleeves, and particularly relates to an extension device for a medical locking sleeve. Background Technology

[0002] Existing locking plate devices for fixing fractures generally consist of a locking plate with locking threaded holes and locking screws that match these locking threaded holes. When in use, the screws are screwed into the locking threaded holes of the locking plate to form an angle fixation device.

[0003] A Chinese patent with publication number CN201617937U discloses a locking plate device for fixing bones, including a locking screw, a locking plate with a locking threaded hole, a first locking sleeve with an outer diameter matching the head of the locking screw, and a second locking sleeve with an inner diameter slightly larger than the head of the locking screw; the locking threaded hole is composed of a main threaded hole and an auxiliary threaded hole that are connected and coaxially arranged, the main threaded hole being correspondingly arranged to the head of the locking screw, the outer side wall of the working end of the first locking sleeve having a thread corresponding to the main threaded hole, and the outer side wall of the working end of the second locking sleeve having a thread corresponding to the auxiliary threaded hole; the first locking sleeve is longer than the second locking sleeve.

[0004] The aforementioned locking sleeve has a guiding function. However, existing locking sleeves are all of fixed length. During use, short sleeves affect the connection of the locking plate holes and prolong the operation time, while long sleeves affect the use of the drill bit. As a result, a large number of sleeves need to be prepared for each orthopedic surgery. This needs to be improved. Utility Model Content

[0005] The purpose of this application is to address the aforementioned technical problems by providing an extension device for a medical locking sleeve, which can reduce the need to prepare locking sleeves of different lengths for orthopedic surgery.

[0006] This application provides an extension device for a medical locking sleeve, including a locking sleeve body, the locking sleeve body comprising: The extension rod has a hollow hole. A clamping element is placed at the end of the extension rod; The fastener is movably mounted on the extension rod; The locking sleeve body has a handle at one end, the handle has a first transverse hole, and the clamping member has a protrusion corresponding to the first transverse hole.

[0007] When orthopedic surgery requires a longer locking sleeve, the hollow hole of the extension rod is fitted onto the shank of the locking sleeve body, connecting the extension rod to the locking sleeve body. The protrusion on the clamping member mates with the first transverse hole of the shank of the locking sleeve body. Then, the clamping member, extension rod, and locking sleeve body are fixed together by the fixing member, thus extending the locking sleeve as a whole. This facilitates the docking of the locking plate hole. After docking, the fixing member is used to contact and fix the extension rod. Then, drilling is performed. The shorter locking sleeve body facilitates the use of the drill bit. The shank and locking sleeve body are integrally connected, providing high structural strength. The axis of the first transverse hole is perpendicular to the axis of the locking sleeve body. After the clamping member mates with the first transverse hole through the protrusion, it can restrict the movement between the extension rod and the locking sleeve body. The protrusion is conical, which can improve the ease of mating between the clamping member and the first transverse hole.

[0008] Furthermore, the fastener includes: Internal thread section; The extension rod is provided with an external thread portion corresponding to the internal thread portion, and the external thread portion is adjacent to the clamping member.

[0009] Furthermore, a second transverse hole is provided at the end of the extension rod.

[0010] Furthermore, the clamping member is provided with a hinge shaft, which is hinged to the extension rod.

[0011] Furthermore, the extension rod includes: The boss portion is located at the end of the extension rod; The movable groove is located on the boss portion and corresponds to the clamping component; The limiting groove connects to the movable groove; When the clamping member engages with the first transverse hole, the outer wall surface of the clamping member is adapted to the outer wall surface of the boss portion, and the clamping member is provided with a limiting part adapted to the limiting groove.

[0012] Furthermore, the fastener also includes: The locking sleeve connects to the fastener and corresponds to the boss portion.

[0013] Furthermore, the clamping member is provided with a flange.

[0014] The beneficial effects of this application are: 1. When orthopedic surgery requires a longer locking sleeve, connect the extension rod to the locking sleeve body to extend the entire locking sleeve, which facilitates the docking of the locking plate hole. After docking is completed, fix it in place with the fastener, remove the extension rod, and then drill the hole.

[0015] 2. After the clamping member engages with the first transverse hole through the protrusion, it can restrict the movement between the extension rod and the locking sleeve body.

[0016] 3. The second transverse hole facilitates the insertion of the force-adding rod, making it easier to rotate the locking sleeve body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the extension device of this application; Figure 2 This is a cross-sectional view of the extension device of this application; In the attached figures, the reference numerals are as follows: 100, locking sleeve body; 110, handle; 120, first transverse hole; 200, extension rod; 210, hollow hole; 220, external thread; 230, second transverse hole; 240, boss; 241, movable groove; 242, limiting groove; 300, clamping member; 310, boss; 320, hinge shaft; 330, limiting part; 340, flange; 400, fixing member; 410, internal thread; 420, locking sleeve. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0019] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0020] The embodiments of this application are described in detail below with reference to the accompanying drawings, through specific examples and application scenarios.

[0021] like Figure 1 , Figure 2 As shown, this application embodiment provides an extension device for a medical locking sleeve, including a locking sleeve body 100, the locking sleeve body 100 comprising: The extension rod 200 is provided with a hollow hole 210; Clamping member 300 is placed at the end of extension rod 200; The fixing part 400 is movably mounted on the extension rod 200; The locking sleeve body 100 has a handle 110 at one end, the handle 110 has a first transverse hole 120, and the clamping member 300 has a corresponding protrusion 310 for the first transverse hole 120.

[0022] When orthopedic surgery requires a longer locking sleeve, the extension rod 200 is fitted into the handle 110 of the locking sleeve body 100 through the hollow hole 210, connecting the extension rod 200 to the locking sleeve body 100. The protrusion 310 on the clamping member 300 mates with the first transverse hole 120 of the handle 110 of the locking sleeve body 100. Then, the clamping member 300, the extension rod 200, and the locking sleeve body 100 are fixed together using the fixing member 400, thus extending the entire locking sleeve and facilitating the connection of the locking plate holes. After connection is completed, the fixing member 400... 00 is contacted and fixed, the extension rod 200 is removed, and then drilling is performed. The shorter locking sleeve body 100 facilitates the use of the drill bit. The shank 110 is integrally connected with the locking sleeve body 100, which has high structural strength. The axis of the first transverse hole 120 is perpendicular to the axis of the locking sleeve body 100. After the clamping member 300 cooperates with the first transverse hole 120 through the boss 310, it can restrict the movement between the extension rod 200 and the locking sleeve body 100. The boss 310 is conical, which can improve the ease of cooperation between the clamping member 300 and the first transverse hole 120.

[0023] Furthermore, the fastener 400 includes: Internal thread part 410; The extension rod 200 is provided with an external thread portion 220 corresponding to the internal thread portion 410, and the external thread portion 220 is adjacent to the clamping member 300.

[0024] The internal threaded portion 410 and the external threaded portion 220 are connected by a threaded pair, so that the fixing member 400 can move away from or towards the clamping member 300 by rotation.

[0025] Furthermore, the end of the extension rod 200 is provided with a second transverse hole 230.

[0026] The axis of the second horizontal hole 230 is perpendicular to the axis of the extension rod 200. The clamping member 300 and the second horizontal hole 230 are located at both ends of the extension rod 200. The second horizontal hole 230 facilitates the insertion of the force-adding rod, making it easier to rotate the locking sleeve body 100.

[0027] Furthermore, the clamping member 300 is provided with a hinge shaft 320, which is hinged to the extension rod 200.

[0028] The clamping member 300 is installed between the clamping member 300 and the extension rod 200 via the hinge shaft 320, so that the clamping member 300 can rotate around the hinge shaft 320. When the extension rod 200 does not need to be connected to the locking sleeve body 100, the clamping member 300 can be rotated to separate its protrusion 310 from the first transverse hole 120, so that the extension rod 200 can be separated from the locking sleeve body 100.

[0029] Furthermore, the extension rod 200 includes: The boss portion 240 is located at the end of the extension rod 200; The movable groove 241 is placed on the boss portion 240 and corresponds to the clamping member 300; The limiting groove 242 is connected to the movable groove 241; When the clamping member 300 is engaged with the first transverse hole 120, the outer wall surface of the clamping member 300 is adapted to the outer wall surface of the boss portion 240, and the clamping member 300 is provided with a limiting portion 330 adapted to the limiting groove 242.

[0030] The boss portion 240 is placed on the outer wall surface of the end of the extension rod 200. When the fixing member 400 is fixed, the fixing member 400 abuts against the boss portion 240. The clamping member 300 is adapted to the movable groove 241 and corresponds to the limiting part 330 through the limiting groove 242. When the clamping member 300 is placed in the movable groove 241, it prevents the movable groove 241 from continuing to move into the hollow hole 210, thereby improving the ease of use of the extension rod 200.

[0031] Furthermore, the fastener 400 also includes: The locking sleeve 420 is connected to the fastener 400 and corresponds to the boss portion 240.

[0032] The locking sleeve 420 is integrally connected with the fixing member 400. When the fixing member 400 is in a fixed state, the locking sleeve 420 cooperates with the boss 240, and the hinge shaft 320 is positioned inside the locking sleeve 420, which enables the clamping member 300 to be restricted in the movable groove 241, ensuring the connection stability between the extension rod 200 and the locking sleeve body 100.

[0033] Furthermore, the clamping member 300 is provided with a flange 340.

[0034] The flange 340 is placed on the outer side wall of the clamping member 300. The flange 340 is perpendicular to the outer side wall of the clamping member 300. The flange 340 is integrally connected with the clamping member 300. When the fixing member 400 is in the fixed state, the flange 340 is placed outside the locking sleeve 420. When the fixing member 400 is released from the fixed state, the clamping member 300 can be rotated through the flange 340, so that the clamping member 300 can be easily separated from the first transverse hole 120.

[0035] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0036] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An extension device for a medical locking sleeve comprising a locking sleeve body (100), characterized in that, The locking sleeve body (100) includes: The extension rod (200) is provided with a hollow hole (210); The clamping element (300) is located at the end of the extension rod (200); The fastener (400) is movably mounted on the extension rod (200); The locking sleeve body (100) has a handle (110) at its end, the handle (110) has a first transverse hole (120), and the clamping member (300) has a corresponding boss (310) for the first transverse hole (120).

2. The medical lock sleeve extension device of claim 1, wherein, The fastener (400) includes: Internal thread (410); The extension rod (200) is provided with an external thread (220) corresponding to the internal thread (410), and the external thread (220) is adjacent to the clamping member (300).

3. The medical lock sleeve extension device of claim 2, wherein, The end of the extension rod (200) is provided with a second transverse hole (230).

4. The medical lock sleeve extension device of claim 3, wherein, The clamping member (300) is provided with a hinge shaft (320), which is hinged to the extension rod (200).

5. The medical lock sleeve extension device of claim 4, wherein, The extension rod (200) includes: The boss (240) is located at the end of the extension rod (200); The movable groove (241) is placed on the boss (240) and corresponds to the clamping member (300); The limiting groove (242) is connected to the movable groove (241); When the clamping member (300) is engaged with the first transverse hole (120), the outer wall surface of the clamping member (300) is adapted to the outer wall surface of the boss (240), and the clamping member (300) is provided with a limiting part (330) adapted to the limiting groove (242).

6. The medical lock sleeve extension device of claim 5, wherein, The fastener (400) also includes: The locking sleeve (420) is connected to the fastener (400) and corresponds to the boss (240).

7. A medical lock sleeve extension device according to claim 6, wherein, The clamping member (300) is provided with a flange (340).

Images