Fibula positioner

Abstract

The utility model relates to a fibula positioner which comprises a positioning body, a clamping piece and a guiding piece. The clamping piece and the guiding piece are arranged on the two sides of the positioning body respectively. The clamping piece is rotationally connected with the positioning main body, and the clamping piece is configured to be capable of acting together with the positioning main body to fix the fibula positioner on the fibula; the guide part is in sliding connection with the positioning main body, the guide part is provided with at least one guide channel, the guide channel is configured to at least allow a kirschner wire to penetrate through, and the guide part is configured to adjust the insertion position of the kirschner wire by adjusting the position of the guide part on the positioning main body.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a fibula locator. Background Art

[0002] Ankle sprains are very common sports injuries, and ankle sprains are very likely to cause damage to the lateral structures, among which the lateral ligaments are the most susceptible to injury. Among the lateral ligaments, the anterior talofibular ligament is the most common, accounting for about 66.6%, followed by the calcaneofibular ligament, accounting for about 20%. Damage to the lateral structures can cause chronic instability of the ankle joint and lead to joint degeneration. Therefore, surgical repair and reconstruction of torn ligaments to restore their stability is particularly important. Currently, there are many surgical methods, but ligament anatomical reconstruction is the most advanced. Bone tunnel drilling is a key step in the reconstruction process. Due to the superficial nature of the fibula, most domestic and foreign surgeons drill the talofibular ligament and calcaneofibular ligament fibular bone tunnels after incision based on experience. This can easily lead to some problems, such as inaccurate bone tunnel position, which directly affects the efficacy of the surgery. Utility Model Content

[0003] In view of the above analysis, the present invention aims to provide a fibula locator that can at least solve one of the above problems.

[0004] The purpose of this utility model is mainly achieved through the following technical solutions:

[0005] The utility model provides a fibula locator, comprising a locating body and a clamping member and a guiding member respectively arranged on both sides of the locating body;

[0006] The clamping member is rotatably connected to the positioning body, and the clamping member is configured to cooperate with the positioning body to fix the fibula locator on the fibula;

[0007] The guide member is slidably connected to the positioning body, and the guide member is provided with at least one guide channel, and the guide channel is configured to at least allow the Kirschner wire to pass through, and the guide member is configured to be able to adjust the insertion position of the Kirschner wire by adjusting its position on the positioning body.

[0008] Furthermore, the positioning body includes a clamping arm and a positioning slide;

[0009] The clamping member is rotatably connected to the clamping arm to define a space for clamping the fibula;

[0010] The guide member cooperates with the positioning slideway, and the guide member is configured to be able to slide on the positioning slideway to adjust the insertion position of the Kirschner wire;

[0011] Preferably, the positioning slide is in the shape of an arc, and the arc center angle of the positioning slide is not less than 30°;

[0012] Preferably, the positioning body is provided with a scale portion cooperating with the positioning slide;

[0013] Preferably, the rotational connection between the clamping member and the clamping arm is located on the center line of the positioning body.

[0014] Furthermore, the positioning body includes a main body portion, and the main body portion is provided with a positioning end and a clamping end;

[0015] The positioning end is provided with a positioning portion, and the positioning portion is provided with the positioning slide;

[0016] The clamping end is provided with a clamping arm, one end of the clamping arm is connected to the main body, and the other end extends obliquely inward;

[0017] Preferably, the width of the positioning portion is greater than the width of the main body portion;

[0018] Preferably, the width ratio of the positioning portion to the main body portion is in the range of [1.2, 2.5];

[0019] Preferably, the side wall of the main body is vertically arranged, and the angle between the clamping arm and the extension line of the side wall of the main body is α, 30°≤α≤60°.

[0020] Furthermore, the positioning body is further provided with a fixed slide groove;

[0021] The clamping member is configured to be able to slide along the fixed sliding groove and to be fixedly connected to the positioning body.

[0022] Furthermore, the fixed sliding groove is in an arc shape, and the center of the arc is located at the rotation connection between the clamping member and the clamping arm.

[0023] Furthermore, the positioning body includes a fixing portion, one end of which is connected to the clamping end, and the other end of which extends outward;

[0024] The fixed slide extends from the main body to the fixed portion;

[0025] The fixing portion cooperates with the fixing slot;

[0026] Preferably, one end of the fixed sliding groove passes the center line of the positioning body and is located on a side away from the fixing portion, and the other end extends to the fixing portion and is flush with the rotation connection between the clamping member and the clamping arm.

[0027] Furthermore, the clamping member is slidably connected or fixedly connected to the positioning body via a fastening assembly, and the fastening assembly is configured to at least be able to adjust the connection type between the clamping member and the positioning body;

[0028] Preferably, the fastening assembly includes a fixing column and a fastener, one end of the fixing column is provided with a limiting portion, and the other end of the fixing column passes through the fixing slot and the clamping member in sequence to be connected to the fastener;

[0029] The fixing column is at least partially located in the fixing slot and is slidably connected to the fixing slot;

[0030] The widths of the fastener and the limiting portion are both greater than the width of the fixed slot, so as to prevent the fixed column from falling out of the fixed slot when the fibula positioner is in use;

[0031] The fastener is configured to at least be capable of adjusting the connection type between the clamping member and the positioning body;

[0032] Preferably, the fastener is threadedly connected to the fixing column.

[0033] Furthermore, the positioning body is provided with a fixed groove arranged outside the fixed slide groove, the limiting member matches the fixed groove and is located in the fixed groove, and the depth of the fixed groove is not less than the thickness of the limiting member.

[0034] Furthermore, the clamping member includes a clamping portion and a holding portion connected to each other, wherein the clamping portion and the holding portion intersect to form an angle β, β>90°;

[0035] The clamping portion is rotatably connected to the clamping arm, and the fixing column passes through the intersection of the clamping portion and the holding portion;

[0036] Preferably, a buckling protrusion is provided at the end of the clamping portion, and the extending direction of the buckling protrusion is toward the center line of the positioning body and is perpendicular to the clamping portion.

[0037] Furthermore, the guide member is slidably connected or fixedly connected to the positioning body via a tightening assembly, and the tightening assembly is configured to at least be able to adjust the connection type between the guide member and the positioning body;

[0038] Preferably, the tightening assembly includes a sliding shaft and a tightening head, one end of the sliding shaft passes through the positioning slideway and is connected to the guide member, and the other end is threadedly connected to the tightening head;

[0039] The widths of the tightening head and the guide member are both greater than the width of the positioning slideway, so as to prevent the sliding shaft from falling off from the positioning slideway when the fibula positioner is in use;

[0040] The sliding shaft is at least partially located in the positioning slideway and is slidably connected to the positioning slideway;

[0041] Preferably, the tightening head is threadedly connected to the sliding shaft, and the sliding shaft is fixedly connected to the guide member; or, the tightening head is fixedly connected to the sliding shaft, and the sliding shaft is threadedly connected to the guide member;

[0042] Preferably, the positioning body is provided with a positioning groove arranged on the outside of the positioning slide groove, and the upper end of the guide member close to the side of the positioning body is provided with a guide slider that cooperates with the positioning groove, and the guide slider is located in the positioning groove, and the depth of the positioning groove is not less than the thickness of the guide slider.

[0043] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: the fibula locator of the present invention clamps the fibula through the positioning body and the clamping member, so that the entire fibula locator is fixed on the fibula, and the Kirschner wire is assembled to the fibula locator through the guide channel of the guide member, and then by adjusting the position of the guide member on the positioning body, the angle of insertion of the Kirschner wire is adjusted, so that the Kirschner wire can drill out the accurate bone channel.

[0044] In the present invention, the above-mentioned technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of the present invention will be described in the following content, and some advantages will become apparent from the description or be understood through practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the text and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. Throughout the accompanying drawings, the same reference symbols denote the same components.

[0046] Figure 1 Schematic diagram of the structure of the fibula locator in a specific embodiment (I);

[0047] Figure 2 Schematic diagram of the structure of the fibula positioner in a specific embodiment (II);

[0048] Figure 3 It is a structural diagram of the positioning body in a specific implementation manner (1);

[0049] Figure 4 It is a structural diagram of the positioning body in a specific implementation manner (II);

[0050] Figure 5 Schematic diagram of the connection between the guide member and the tightening assembly in a specific embodiment;

[0051] Figure 6 It is a structural diagram of the guide member and the tightening assembly in a specific embodiment;

[0052] Figure 7 This is a schematic diagram of the connection between the clamping member and the fastening assembly in a specific embodiment;

[0053] Figure 8 An exploded view of the clamping member and the fastening assembly in a specific embodiment;

[0054] Figure 9 Schematic diagram of the structure of the clamping member in a specific embodiment.

[0055] Reference numerals:

[0056] 1-positioning body; 101-positioning slide; 102-fixing slide; 103-positioning groove; 104-fixing groove; 11-clamping arm; 12-scale part; 13-main body; 131-positioning end; 132-clamping end; 14-positioning part; 15-fixing part; 2-clamping member; 21-clamping part; 211-snap-fit protrusion; 22-holding part; 3-guide member; 301-guide channel; 31-guide slider; 4-fastening assembly; 41-fixing column; 411-limiting part; 42-fastener; 5-tightening assembly; 51-sliding shaft; 52-tightening head. DETAILED DESCRIPTION

[0057] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0058] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the term "connected" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood according to the specific circumstances.

[0059] The terms "top," "bottom," "above," "below," and "on" used throughout the description refer to relative positions of components of a device, such as the relative positions of top and bottom substrates within a device. It will be understood that devices are multifunctional regardless of their orientation in space.

[0060] The working surface of the present invention can be a plane or a curved surface, can be inclined, or can be horizontal. For the convenience of description, the present invention is placed on a horizontal surface and used on a horizontal surface, and "high and low" and "up and down" are defined in this way.

[0061] A specific embodiment of the present invention discloses a fibula locator, such as Figures 1 to 9As shown, the fibula locator includes a locating body 1 and a clamping member 2 and a guiding member 3 respectively arranged on both sides of the locating body 1 .

[0062] The clamping member 2 is rotatably connected to the positioning body 1, and the clamping member 2 is configured to cooperate with the positioning body 1 to fix the fibula locator on the fibula;

[0063] The guide member 3 is slidably connected to the positioning body 1, and the guide member 3 is provided with at least one guide channel 301, and the guide channel 301 is configured to at least allow the Kirschner wire to pass through, and the guide member 3 is configured to be able to adjust the insertion position of the Kirschner wire by adjusting its position on the positioning body 1.

[0064] The fibula locator of the present invention clamps the fibula through the positioning body and the clamping piece, so that the entire fibula locator is fixed on the fibula. The Kirschner wire is assembled to the fibula locator through the guide channel of the guide piece. The position of the guide piece on the positioning body is then adjusted to adjust the angle of insertion of the Kirschner wire, so that the Kirschner wire can drill out an accurate bone channel.

[0065] The positioning body 1 includes a clamping arm 11 and a positioning slide 101 .

[0066] The clamping member 2 is configured to cooperate with the clamping arm 11 to fix the fibula locator on the fibula, that is, the fibula is clamped between the clamping member 2 and the clamping arm 11, that is, the clamping member 2 and the clamping arm 11 intersect to form a space for clamping the fibula (referred to as the clamping space), and the clamping space can be adjusted by rotating the clamping member 2 to prepare for fixing the fibula locator on the fibula.

[0067] The guide member 3 cooperates with the positioning slide 101, and the guide member 2 is configured to be able to slide on the positioning slide 101, that is, the guide member 3 is slidingly connected to the positioning slide 101, and the guide member 3 can slide on the positioning slide 101 to prepare for adjusting the insertion position of the Kirschner wire.

[0068] To ensure accurate insertion of the K-wire, the positioning slide 101 is arc-shaped, and the arc center angle of the positioning slide 101 is not less than 30°. In this embodiment, the arc center angle of the positioning slide 101 is 50°. The center of the positioning slide 101 is located on the positioning body 1. Preferably, the center of the positioning slide 101 is located on the centerline AA of the positioning body.

[0069] Furthermore, the positioning body 1 is provided with a scale portion 12 that cooperates with the positioning slide 101. The scale portion 12 is located above the positioning slide 101. The scale accuracy of the scale portion 12 is not less than 1°, and the range of the scale portion 12 is consistent with the size of the central angle of the positioning slide 101. Exemplarily, the scale portion 12 includes an arc line and a main scale line, an auxiliary scale line and an angle value located on the arc line. The angle interval between the main scale lines is 10°. An angle value (such as 20°, 30°, 40°, etc.) that cooperates with the main scale lines is provided above the main scale lines. The angle interval between the auxiliary scale lines is 1°. There are 9 auxiliary scale lines between two main scale lines, wherein the length of the scale line in the center of the 9 auxiliary scale lines is greater than the length of the other auxiliary scale lines and less than the length of the main scale line.

[0070] Preferably, the scale portion 12 is provided on the positioning body 1 by etching or carving, so as to avoid the scale portion 12 becoming unclear after the fibula locator is used for a long time, thereby increasing the service life of the fibula locator.

[0071] The positioning slide 101 is located above the clamping arm 11, that is, when the fibula locator is in use, the clamping arm 11 is in contact with the fibula, and the positioning slide 101 is located at one end of the positioning body 1 as far away from the clamping arm 11 as possible, that is, the positioning slide 101 is as far away from the fibula as possible, so as to more accurately adjust the position of the Kirschner wire insertion.

[0072] Preferably, the clamping member 2 is rotatably connected to the clamping arm 11 to define a clamping space, that is, the adjustable opening formed below the intersection of the two serves as the clamping space. Preferably, the rotatable connection between the clamping member 2 and the clamping arm 11 is located on the centerline AA of the positioning body 1 to improve the clamping stability of the fibula locator.

[0073] The clamping member 2 and the guide member 3 are respectively arranged on opposite sides of the positioning body 1 to prevent the clamping member from affecting the insertion of the Kirschner wire. Figure 1 As shown, the guide member 3 is provided on the front side of the positioning body 1 , and the clamping member 2 is provided on the rear side of the positioning body 1 .

[0074] According to one embodiment of the present utility model, the positioning body 1 includes a main body 13, and the main body 13 is provided with a positioning end 131 and a clamping end 132, that is, the two ends of the main body 13 are respectively a positioning end 131 and a clamping end 132, the positioning end 131 is the upper end of the main body 13, and the clamping end 132 is the lower end of the main body 13.

[0075] The positioning end 131 is provided with a positioning portion 14 , and the positioning portion 14 is provided with the positioning slide 101 and the scale portion 12 , that is, the positioning portion 14 is used to form the positioning slide 101 and the scale portion 12 , so the shape of the positioning portion 14 matches the positioning slide 101 and the scale portion 12 .

[0076] In order to facilitate the holding of the positioning body and the operation of the fibula locator, the width of the positioning portion 14 is greater than the width of the main body 13. Preferably, the width ratio of the positioning portion 14 to the main body 13 is in the range of [1.2, 2.5], which facilitates the angle adjustment of the Kirschner wire while avoiding head-heavy and angle-light. Furthermore, the top wall of the positioning portion 14 is arc-shaped, and its top wall cooperates with the positioning slide 101. Preferably, the left and right side walls of the positioning portion 14 are connected to the top wall and the bottom wall using an arc transition. The center of the bottom wall of the positioning portion 14 is connected to the positioning end 131, and the bottom wall of the positioning portion 14 transitions to the side wall of the main body 13 in an arc shape.

[0077] The side walls of the main body 13 are vertically arranged, that is, the side walls of the main body 13 are parallel to the center line AA of the positioning body.

[0078] The clamping end 132 is provided with the clamping arm 11, and the clamping arm 11 is located below the clamping end 132. Specifically, one end of the clamping arm 11 is connected to one side of the clamping end 132 ( Figure 3 The left side of the clamping end 132 is connected, and the other end extends obliquely inward, that is, the other end extends obliquely downward and toward the center line AA of the fixed body, and the clamping arm 11 passes through the center line AA.

[0079] Preferably, the angle between the clamping arm 11 and the extension line of the side wall of the main body 13 is α, 30°≤α≤60°, to ensure the stability of the fibula positioner on the fibula. In this embodiment, α=45°.

[0080] In this embodiment, the clamping arm 11 is in the shape of a strip plate, and the side wall adjacent to the main body 13 extends along a plane, that is, the side wall is a plane, so as to clamp the fibula more stably.

[0081] According to a preferred embodiment of the present invention, the positioning body 1 is also provided with a fixed groove 102, and the clamping member 2 is configured to be able to slide along the fixed groove 102 and to be fixedly connected to the positioning body, so that the clamping member 2 can be clamped on the fibula with the clamping arm 11, that is, by sliding the clamping member in the fixed groove 102, the angle between the clamping member 2 and the clamping arm 11 is adjusted, and then the size of the clamping space is adjusted. When the clamping space is matched with the patient's fibula, the clamping member 2 is fixed to the positioning body 1 to fix the fibula locator on the patient's fibula.

[0082] The fixed sliding groove 102 is in an arc shape, and the center of the arc is located at the rotation connection between the clamping member 2 and the clamping arm 11 .

[0083] The positioning body 1 includes a fixing portion 15, one end of which is connected to the clamping end 132, and the other end of which extends outward (i.e., away from the center line AA of the positioning body 1). Preferably, the fixing portion 15 is located below the clamping end 132 and on the side of the clamping end 132 away from the clamping arm 11 ( Figure 3 The clamping arm 11 and the fixing portion 15 are connected at two ends of the clamping end 132 relative to each other.

[0084] The fixing slot 102 extends from the main body 13 to the fixing portion 15 . The fixing portion 15 cooperates with the fixing slot 102 , so that the outer end of the fixing portion 15 (the end away from the clamping end) extends outward along the curvature of the fixing slot 102 .

[0085] In order to improve the stability of the positioning body, the clamping arm 11 transitions in an arc shape to the lower wall of the main body 13, and the lower wall of the main body 13 extends in an arc shape from the connection with the clamping arm 11 to the fixed part 15. The extended arc of the fixed part 15 and the extended arc of the lower wall of the clamping arm 11 belong to the same arc, and the arc cooperates with the fixed slide groove 102.

[0086] In order to expand the clamping space adjustment range of the fibula positioner as much as possible and make the fibula positioner suitable for fibulae of different thicknesses, one end of the fixing slot 102 passes over the center line AA of the positioning body 1 and is located on the side away from the fixing portion 15 ( Figure 3 The other end of the fixed slot 102 extends to the fixed portion 15 and is flush with the rotational connection between the clamping member 2 and the clamping arm 11, that is, the central angle of the fixed slot 102 is not less than 90°, and the fixed portion 15 extends outwardly beyond the rotational connection between the clamping member 2 and the clamping arm 11, that is, the outer end of the fixed portion 15 is located below the rotational connection between the clamping member 2 and the clamping arm 11. It should be noted that the fixed portion 15 does not extend outward beyond the lower end of the clamping arm 11, that is, the outer end of the fixed portion 15 is located above the lower end of the clamping arm 11, so as to prevent the fixed portion 15 from affecting the clamping effect of the clamping arm 11 and the clamping member 2 on the fibula.

[0087] According to one embodiment of the present invention, the clamping member 2 is slidingly connected or fixedly connected to the positioning body 1 through a fastening assembly 4, and the fastening assembly 4 is configured to at least be able to adjust the connection type between the clamping member 2 and the positioning body 1. Further, the fastening assembly 4 is configured to be able to adjust the degree of connection between the clamping member 2 and the positioning body 1.

[0088] Specifically, when the size of the clamping space needs to be adjusted, the fastening assembly can enable the clamping member 2 to slide smoothly in the fixed slide groove 102 (that is, the clamping member 2 and the positioning body 1 are slidably connected through the fastening assembly 4) so as to be able to adjust the angle between the clamping member 2 and the clamping arm 11; when the clamping space needs to be fixed, the fastening assembly can fix the clamping member 2 at a certain position in the fixed slide groove 102 (that is, the clamping member 2 and the positioning body 1 are fixedly connected through the fastening assembly 4), at which time the clamping member 2 cannot rotate relative to the clamping arm 11, thereby fixing the clamping space.

[0089] For example, the fastening assembly 4 includes a fixing post 41 and a fastener 42. One end of the fixing post 41 is provided with a stopper 411, and the other end of the fixing post 41 passes through the fixing slot 102 and the clamping member 2 in sequence to connect with the fastener 42. The fixing post 41 is at least partially located in the fixing slot and is slidably connected to the fixing slot.

[0090] The widths of the fastener 42 and the limiting portion 411 are both greater than the width of the fixed slot 102, that is, the limiting portion 411 and the fastener 42 can always be arranged on both sides of the fixed slot 102, that is, the limiting portion 411 and the fastener 42 cannot pass through the fixed slot, so as to avoid the fixing column 41 falling off from the fixed slot 102 when the fibula locator is in use.

[0091] The fastener 42 is configured to at least be able to adjust the type of connection between the clamp 2 and the positioning body 1. Further, the fastener 42 is configured to be able to adjust the degree of connection between the clamp 2 and the positioning body 1. Exemplarily, the fastener 42 is threadedly connected to the fixing column 41. When the fastener 42 rotates in a direction close to the positioning body so that the fastener 42 and the limiting portion 411 are close to the positioning body (i.e., the fastener 42 and the limiting portion 411 clamp the positioning body), the clamp 2 and the positioning body 1 are fixedly connected. When the fastener 42 rotates in a direction away from the positioning body so that there is a gap between the fastener 42, the limiting portion 411 and the positioning body, the clamp 2 and the positioning body 1 are slidably connected.

[0092] In order to facilitate subsequent maintenance, the fastener 42 is detachably connected to the fixing column 41 to facilitate replacement and maintenance of the fastening assembly 4.

[0093] In order to improve the connection stability of the fastening assembly, the fixing column 41 and the limiting portion 411 are integrally formed.

[0094] To improve the clamping stability of the fibula locator on the fibula, the clamping member 2 includes a connected clamping portion 21 and a holding portion 22. The clamping portion 21 and the holding portion 22 intersect to form an angle β, β>90°, preferably 120°≤β≤165°. The extension line of the clamping portion 21 is OA, and the extension line of the holding portion 22 is OB. The extension lines of the two intersect at point O, ∠AOB=β. In this embodiment, β=145°.

[0095] The clamping portion 21 is rotatably connected to the clamping arm 11 , and the fixing post 41 passes through the intersection of the clamping portion 21 and the holding portion 22 , that is, the fixing post 411 passes through point O.

[0096] In this embodiment, the holding portion 22 is a rectangular strip plate with an arc transition at its end. The clamping portion 21 is a strip plate with a width gradually decreasing from the intersection with the holding portion 22 .

[0097] After the fibula positioner is clamped on the fibula, the operator grasps the positioning clip and simultaneously clasps the gripping portion 22 with one finger, so that the fibula positioner can clamp the fibula more firmly.

[0098] In order to enable the fibula positioner to clamp the fibula more firmly, a buckling protrusion 211 is provided at the end of the clamping portion 21 . The buckling protrusion 211 extends toward the center line AA of the positioning body and is perpendicular to the clamping portion 21 .

[0099] In this embodiment, the clamping member 2 is integrally formed and is rotatably connected to the clamping arm 11 via a shaft pin.

[0100] According to one embodiment of the present invention, the guide member 3 is slidingly connected or fixedly connected to the positioning body through a tightening assembly 5; the tightening assembly 5 is configured to at least be able to adjust the connection type between the guide member 3 and the positioning body 1, and further, the tightening assembly 5 is configured to be able to adjust the degree of connection between the guide member 3 and the positioning body 1.

[0101] Specifically, when it is necessary to adjust the position of the guide member on the positioning slide, the tightening assembly can enable the guide member 3 to slide smoothly in the positioning slide 101 (that is, the guide member 3 and the positioning body 1 are slidably connected through the tightening assembly 5), so as to be able to adjust the position of the guide member 3, and then adjust the angle of insertion of the Kirschner wire; when it is necessary to fix the guide member 3, the tightening assembly can fix the guide member 3 at a certain position of the positioning slide 101 (that is, the guide member 3 and the positioning body 1 are fixedly connected through the tightening assembly 5). At this time, the angle of insertion of the Kirschner wire is determined. After the guide member 3 is fixed, force is applied to the Kirschner wire to insert it into the corresponding position, and a precise bone channel is drilled out.

[0102] Exemplarily, the tightening assembly 5 includes a sliding shaft 51 and a tightening head 52, one end of the sliding shaft 51 passes through the positioning slide 101 and is connected to the guide member 3, and the other end of the sliding shaft 51 is connected to the tightening head 52, and the sliding shaft 51 is at least partially located in the positioning slide 101 and is slidably connected to the positioning slide 101.

[0103] The widths of the tightening head 52 and the guide member 3 are both greater than the width of the positioning slide 101, that is, the tightening head 52 and the guide member 3 can always be arranged on both sides of the positioning slide 101, that is, the tightening head 52 and the guide member 3 cannot pass through the positioning slide 101, so as to avoid the sliding shaft 51 falling off from the positioning slide 101 when the fibula locator is in use.

[0104] The tightening head 52 is configured to at least adjust the type of connection between the guide member 3 and the positioning body 1. Further, the tightening head 52 is configured to adjust the degree of connection between the guide member 3 and the positioning body 1. For example, the tightening head 52 is threadedly connected to the sliding shaft 51, and the sliding shaft 51 is fixedly connected to the guide member 3; or, the tightening head 52 is fixedly connected to the sliding shaft 51, and the sliding shaft 51 is threadedly connected to the guide member 3. When the tightening head 52 is rotated in a direction close to the positioning body so that the tightening head 52 and the guide member 3 are close to the positioning body (that is, the tightening head 52 and the guide member 3 clamp the positioning body), the guide member 3 and the positioning body are fixedly connected; when the tightening head 52 is rotated in a direction away from the positioning body so that a gap is formed between the tightening head 52, the guide member 3 and the positioning body, the guide member 3 and the positioning body are slidingly connected.

[0105] In order to facilitate subsequent maintenance, the sliding shaft 51 is detachably connected to the tightening head 52; or / and, the sliding shaft 51 is detachably connected to the guide member 3 to facilitate replacement and maintenance of the tightening assembly 5.

[0106] In order to ensure the connection stability of the tightening assembly 5, the sliding shaft 51 and the tightening head 52 are integrally formed.

[0107] In order to ensure the fixing effect of the fastening component 4 and the tightening component 5, the fastener 41, the limiting part 411, the tightening head 52, and the guide member 3 are all provided with a flexible pad that matches their structure on the side close to the positioning body 1 to improve the stability of the guide member 3, the clamping member 2 and the positioning body 1 when they are fixedly connected.

[0108] To improve the guiding stability of the guide member 3 for the K-wire, the ratio of the length of the guide member 3 to the length of the positioning body 1 (the length along its centerline AA) is not less than 1:4 to ensure the insertion stability of the K-wire. Preferably, the guide member 3 is in the shape of a rectangular parallelepiped, and its extension direction points to the center of the positioning slide.

[0109] Preferably, the extension direction of the guide channel 301 is consistent with the extension direction of the guide member. In order to ensure more options for the insertion position of the Kirschner wire, the guide member 3 is provided with multiple guide channels 301, and the multiple guide channels are arranged in parallel and regularly. In this embodiment, the guide member 3 is provided with five guide channels 301, three of which are provided near the positioning body (these three are at an equal distance from the positioning body, and the spacing between them is the same), and two are provided away from the positioning body (these two are at an equal distance from the positioning body), and the two settings away from the positioning body are located in the middle of the three settings close to the positioning body.

[0110] To improve the sliding stability of the guide member 3 and the clamping member 2, the positioning slideway 101 and the fixed slideway 102 are both arc-shaped sliding holes. The guide member and the clamping member are located on either side of the positioning body 1. The positioning body 1 is provided with a positioning groove 103 surrounding the outer side of the positioning groove 101 and a fixed groove 104 surrounding the outer side of the fixed slideway 102. The positioning groove 103 and the fixed groove 104 are both located on the side of the positioning body 1 close to the guide member 3. Preferably, the limiting member 411 matches the fixed groove 104 and is located within the fixed groove 104. The depth of the fixed groove 104 is no less than the thickness of the limiting member 411 to prevent the limiting member 411 from affecting the insertion path of the K-wire. The upper end of the guide member 3 close to the positioning body is provided with a guide slider 31 that cooperates with the positioning groove 103. The guide slider 31 is located in the positioning groove 103. The depth of the positioning groove 103 is not less than the thickness of the guide slider 31 to ensure that the guide member 3 can be tightly attached to the positioning body 1 without any gap, thereby improving the sliding stability of the guide member and the guiding stability.

[0111] In this embodiment, the positioning body 1 is in the shape of a plate, the positioning portion 14 is shaped like an elliptical plate, and the main body 13 is shaped like a rectangular plate.

[0112] Preferably, the positioning body 1 is formed in one piece, such as being cast in one piece.

[0113] This new locator is fixed to the fibula, using one surface of the fibula as a reference for positioning, reducing the surgical risk of failed tunneling. Using the fibula positioning clamp's surface as the reference plane, the tunnel is created at an angle selected based on preoperative X-ray planning, ensuring the tunnel angle matches the preoperatively planned angle.

[0114] The five guide channels in the guide are in the same direction. This setting is to give the user more channel options at the fibula position and ensure that the channel is located in the middle position of the fibula.

[0115] The fibula locator of the present invention is fixed on the fibula by manual clamping and locking of the fastening assembly, and the insertion direction of the Kirschner wire is determined by the guide part. The positioning position will not be offset during use, ensuring that the insertion point of the Kirschner wire can fully meet the needs of the user.

[0116] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A fibula locator, characterized in that: It includes a positioning body and a clamping member and a guide member respectively arranged on both sides of the positioning body; The clamping member is rotatably connected to the positioning body, and the clamping member is configured to cooperate with the positioning body to fix the fibula locator on the fibula; The guide member is slidably connected to the positioning body, and the guide member is provided with at least one guide channel, and the guide channel is configured to at least allow the Kirschner wire to pass through, and the guide member is configured to be able to adjust the insertion position of the Kirschner wire by adjusting its position on the positioning body.

2. The fibula locator according to claim 1, characterized in that The positioning body includes a clamping arm and a positioning slide; The clamping member is rotatably connected to the clamping arm to define a space for clamping the fibula; The guide member cooperates with the positioning slideway, and the guide member is configured to be able to slide on the positioning slideway to adjust the insertion position of the Kirschner wire; The positioning slide is in the shape of an arc, and the arc center angle of the positioning slide is not less than 30°; The positioning body is provided with a scale portion that matches the positioning slide; The rotation connection between the clamping member and the clamping arm is located on the center line of the positioning body.

3. The fibula locator according to claim 2, characterized in that: The positioning body comprises a main body portion, and the main body portion is provided with a positioning end and a clamping end; The positioning end is provided with a positioning portion, and the positioning portion is provided with the positioning slide; The clamping end is provided with a clamping arm, one end of the clamping arm is connected to the main body, and the other end extends obliquely inward; The width of the positioning portion is greater than the width of the main body portion; The width ratio of the positioning portion to the main body portion is in the range of [1.2, 2.5]; The side wall of the main body is vertically arranged, and the angle between the clamping arm and the extension line of the side wall of the main body is α, 30°≤α≤60°.

4. The fibula locator according to claim 3, characterized in that: The positioning body is also provided with a fixed slide groove; The clamping member is configured to be able to slide along the fixed sliding groove and to be fixedly connected to the positioning body.

5. The fibula locator according to claim 4, characterized in that: The fixed sliding groove is in an arc shape, and the center of the arc is located at the rotation connection between the clamping member and the clamping arm.

6. The fibula locator according to claim 4 or 5, characterized in that: The positioning body includes a fixing portion, one end of which is connected to the clamping end, and the other end of which extends outward; The fixed slide extends from the main body to the fixed portion; The fixing portion cooperates with the fixing slot; One end of the fixed sliding groove passes the center line of the positioning body and is located on a side away from the fixing portion, and the other end extends to the fixing portion and is flush with the rotation connection between the clamping member and the clamping arm.

7. The fibula locator according to claim 4 or 5, characterized in that: The clamping member is slidably connected or fixedly connected to the positioning body via a fastening assembly, and the fastening assembly is configured to at least be able to adjust the connection type between the clamping member and the positioning body; The fastening assembly includes a fixing column and a fastener, one end of the fixing column is provided with a limiting portion, and the other end of the fixing column passes through the fixing slot and the clamping member in sequence to be connected to the fastener; The fixing column is at least partially located in the fixing slot and is slidably connected to the fixing slot; The widths of the fastener and the limiting portion are both greater than the width of the fixed slot, so as to prevent the fixed column from falling out of the fixed slot when the fibula positioner is in use; The fastener is configured to at least be capable of adjusting the connection type between the clamping member and the positioning body; The fastener is threadedly connected to the fixing column.

8. The fibula locator according to claim 7, characterized in that: The positioning body is provided with a fixed groove arranged outside the fixed sliding groove, the limiting portion matches the fixed groove and is located in the fixed groove, and the depth of the fixed groove is not less than the thickness of the limiting portion.

9. The fibula locator according to claim 7, characterized in that: The clamping member comprises a clamping portion and a holding portion connected to each other, wherein the clamping portion and the holding portion intersect to form an angle β, β>90°; The clamping portion is rotatably connected to the clamping arm, and the fixing column passes through the intersection of the clamping portion and the holding portion; A buckling protrusion is provided at the end of the clamping portion, and an extending direction of the buckling protrusion is toward the center line of the positioning body and is perpendicular to the clamping portion.

10. The fibula locator according to claim 2, characterized in that: The guide member is slidably connected or fixedly connected to the positioning body via a tightening assembly, and the tightening assembly is configured to at least be able to adjust the connection type between the guide member and the positioning body; The tightening assembly includes a sliding shaft and a tightening head, one end of the sliding shaft passes through the positioning slideway and is connected to the guide member, and the other end is threadedly connected to the tightening head; The widths of the tightening head and the guide member are both greater than the width of the positioning slideway, so as to prevent the sliding shaft from falling off from the positioning slideway when the fibula positioner is in use; The sliding shaft is at least partially located in the positioning slideway and is slidably connected to the positioning slideway; The tightening head is threadedly connected to the sliding shaft, and the sliding shaft is fixedly connected to the guide member; or the tightening head is fixedly connected to the sliding shaft, and the sliding shaft is threadedly connected to the guide member; The positioning body is provided with a positioning groove arranged on the outside of the positioning slide groove, and the upper end of the guide member close to the positioning body is provided with a guide slider that cooperates with the positioning groove. The guide slider is located in the positioning groove, and the depth of the positioning groove is not less than the thickness of the guide slider.

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