Punching sighting device for ankle fracture surgery

Abstract

The utility model relates to the technical field of medical instruments, in particular to a punching sighting device for an ankle fracture surgery, which comprises an arc-shaped plate, an arc-shaped rotating arm, a positioning rod and a needle guide rod. The rotary connecting end and the needle tube end are respectively formed by outwards extending two ends of the arc-shaped plate body along the tangential direction; one end of the arc-shaped rotating arm is parallel to the rotating connecting end in the tangential direction and is in 360-degree rotating connection with the rotating connecting end; the needle guide rod vertically penetrates through the end of the needle tube, a needle hole is axially formed in the needle guide rod, the orthopedic needle penetrates through the needle hole in a sliding mode, and the center line where the center of the needle hole is located and the rotating axis of the arc-shaped rotating arm intersect at the point O; the positioning rod is provided with a fixed end and a free end, the fixed end is fixedly connected with the other end of the arc-shaped rotating arm, and the free end extends to the O point. The punching sighting device for the ankle fracture surgery is simple in structure, convenient to operate and capable of accurately punching a bone at a fracture position according to a specified route.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, and more specifically to a punching aimer for ankle fracture surgery. Background Art

[0002] The ankle, or ankle joint, is one of the most critical and most vulnerable parts of the human body. Ankle fractures are caused by ankle trauma, which can cause dislocation or fracture of the internal bone structure. When performing ankle fracture repair surgery, the dislocated or broken bones must be repositioned first, and then the orthopedic needles are used to perforate the bones on both sides of the fracture position after repositioning. Finally, the dislocated or broken bones can be fixed directly with orthopedic pins or with hollow screws.

[0003] However, the bone structure at the ankle joint is relatively complex and contains more tissues. The bone perforator needle often deviates from the route when perforating the bone at the fracture site, making it difficult to ensure that the bone perforator needle penetrates the designated bone position according to the planned route.

[0004] Therefore, in ankle fracture surgery, how to provide an aiming device that allows a bone perforation needle to accurately perforate the bone at the fracture site along a specified route is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] Therefore, the purpose of the utility model is to provide a perforating aimer for ankle fracture surgery, so as to solve the technical problem that the route is easily deviated when the bone at the fracture site is perforated by orthopedic needles in the existing ankle fracture surgery.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A perforating aimer for ankle fracture surgery, to which an orthopedic needle can be connected, comprises an arc plate, an arc rotating arm, a positioning rod and a needle guide rod; the arc plate comprises an arc plate body, a rotating connecting end and a needle tube end, the rotating connecting end and the needle tube end are respectively formed by extending outwardly from both ends of the arc plate body along the tangential direction; one end of the arc rotating arm is parallel to the rotating connecting end along the tangential direction and is connected for 360° rotation; the needle guide rod is vertically inserted into the needle tube end and a needle hole is axially opened inside it, the orthopedic needle is slidably inserted into the needle hole, and the center line of the center of the needle hole intersects with the rotation axis of the arc rotating arm at point O; the positioning rod has a fixed end and a free end, the fixed end is fixedly connected to the other end of the arc rotating arm, and the free end extends to point O and corresponds to the needle tip of the orthopedic needle front and back.

[0008] Through the above technical solutions, it can be known that compared with the prior art, the utility model discloses a perforation aiming device for ankle fracture surgery. When performing fracture surgery on a patient, the orthopedic needle is introduced through the needle guide rod, penetrates the patient's ankle and touches the positioning ball. During this process, the orthopedic needle always points to the positioning ball and does not deviate from the route. The device has a simple structure and is easy to operate. It can accurately perforate the bone at the fracture site according to the specified perforation route.

[0009] Preferably, the perforating aiming device for ankle fracture surgery further comprises a positioning ball, and the positioning ball is fixedly connected to the free end of the positioning rod.

[0010] The beneficial effect of adopting the above technical solution is that the use of the positioning ball can more conveniently and quickly align the needle tip of the orthopedic needle.

[0011] Preferably, the needle tube end is provided with a needle rod penetration hole, and the needle guide rod is slidably connected to the needle rod penetration hole.

[0012] Preferably, the perforating aimer for ankle fracture surgery also includes a spring plunger, the needle tube end is provided with a plunger assembly groove perpendicular to the axis of the needle rod penetration hole, the spring plunger is fixed in the plunger assembly groove and its plug head can extend into the needle rod penetration hole and abut against the outer wall of the needle guide rod.

[0013] Specifically, a positioning groove is provided on the outer wall surface of the needle guide rod, and the plug head of the spring plunger can be elastically engaged with the positioning groove.

[0014] The beneficial effect of adopting the above technical solution is that after the needle guide rod is inserted into the needle rod penetration hole, the needle guide rod can be rotated so that the positioning groove of the needle guide rod can be quickly clamped on the plug head of the spring plunger, which facilitates the rapid positioning of the needle guide tube.

[0015] Preferably, the perforating aimer for ankle fracture surgery also includes a locking bolt, and the needle tube end is also provided with a threaded hole perpendicular to the axis of the needle rod penetration hole, and the locking bolt can be screwed into the needle rod penetration hole through the threaded hole and abutted and locked with the positioning groove.

[0016] The beneficial effect of adopting the above technical solution is that after the locking bolt abuts against the positioning groove, it can continue to be screwed in to apply radial force to the needle guide rod, thereby limiting the axial movement of the needle guide rod.

[0017] Preferably, the positioning grooves are a plurality of positioning blind holes, or are elongated grooves.

[0018] Preferably, the punch aimer for ankle fracture surgery also includes a rotating rod and a locking nut, the rotating rod includes a threaded section and a smooth rod section, an assembly hole is provided on the rotating connection end, the smooth rod section is rotatably connected in the assembly hole and the bottom extends out of the assembly hole and is fixedly connected to the arc-shaped rotating arm, the threaded section is located at the axial outer end of the assembly hole and is threadedly connected to the locking nut.

[0019] Specifically, the rod body at the bottom of the smooth rod section of the rotating rod passes through the arc-shaped rotating arm and is fixed by a pin, and the end of the rotating rod threaded section away from the arc-shaped rotating arm is fixedly connected with a rotating rod limiting plate.

[0020] The beneficial effect of adopting the above technical solution is that this structural design makes the arc plate, the arc rotating arm and the rotating rod a movable whole, preventing the components from being disassembled and separated; locking one end of the rotating rod by a locking nut and fixing the other end of the rotating rod by a pin, so that the structure is locked, so that the arc plate and the arc rotating arm are always in surface contact, thereby ensuring that the positioning ball and the needle tip of the orthopedic needle correspond to each other front and back; when the sight is not in use, the arc rotating arm is rotated in the arc plate to save the storage space of the sight.

[0021] Preferably, a through hole is formed at the other end of the arc-shaped rotating arm, and the fixed end of the positioning rod is fixed in the through hole.

[0022] Preferably, the inner wall of the end of the needle hole of the needle guide rod away from the positioning ball is processed with a chamfered slope for facilitating the insertion of the orthopedic needle; the end surface of the needle guide rod corresponding to the positioning ball is processed with a serrated structure for facilitating positioning.

[0023] Specifically, a plurality of weight-reducing holes are provided on the arc-shaped plate body.

[0024] The beneficial effect of adopting the above technical solution is that the weight-reducing holes can reduce the weight of the arc-shaped plate, making the device easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 It is a structural schematic diagram of the punch sight for ankle fracture surgery of the utility model;

[0027] Figure 2 It is a schematic diagram of the arc-shaped rotating arm of the punch sight for ankle fracture surgery of the utility model rotating to other positions;

[0028] Figure 3 It is a schematic diagram of the structure of the punch sight for ankle fracture surgery of the utility model after the orthopedic needle is taken out;

[0029] Figure 4 This is a schematic diagram of the structure of the needle guide rod in the utility model;

[0030] Figure 5 It is a cross-sectional view of the needle rod in the utility model;

[0031] Figure 6 It is a schematic diagram of the structure of the enlarged arc plate A in the utility model;

[0032] Figure 7 It is a cross-sectional view of the spring plunger in the utility model;

[0033] Figure 8 It is a schematic diagram of the structure of the enlarged arc plate B in the utility model;

[0034] Fig. 9 This is a schematic diagram of the structure of the arc-shaped rotating arm C in the utility model.

[0035] Fig.10 It is a cross-sectional view of the arc plate B.

[0036] In the accompanying drawings, 100, orthopedic needle, 1, arc plate, 2, arc rotating arm, 3, positioning rod, 4, needle guide rod, 5, positioning ball, 6, spring plunger, 7, locking bolt, 8, rotating rod, 9, locking nut, 11, needle rod penetration hole, 12, weight reduction hole, 31, limit plate, 41, needle hole, 42, positioning groove, 61, sleeve, 62, spring, 63, plug, 81, rotating rod limit plate. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] See attached Figures 1 to 10 , is a punch sight for ankle fracture surgery of the utility model, on which an orthopedic needle 100 can be connected, comprising an arc plate 1, an arc rotating arm 2, a positioning rod 3 and a needle guide rod 4, the arc plate 1 comprises an arc plate body, a rotating connection end and a needle tube end, the rotating connection end and the needle tube end are respectively formed by extending outward along the tangential direction at both ends of the arc plate body; one end of the arc rotating arm 2 is parallel to the rotating connection end along the tangential direction and is rotatably connected by 360°; the needle guide rod 4 is vertically penetrated on the needle tube end and a needle hole 41 is axially opened inside the needle tube, the orthopedic needle 100 is slidably penetrated in the needle hole 41, and the center line of the hole center of the needle hole 41 intersects with the rotation axis of the arc rotating arm 2 at point O; the positioning rod 3 has a fixed end and a free end, the fixed end is fixedly connected to the other end of the arc rotating arm 2, and the free end extends to point O and corresponds to the front and back of the needle tip of the orthopedic needle 100.

[0041] Specifically, the perforating sight for ankle fracture surgery further comprises a positioning ball 5 , which is fixedly connected to the free end of the positioning rod 3 .

[0042] In some specific examples, a needle rod penetration hole 11 is formed at the end of the needle tube, and the needle introduction rod 4 is slidably connected to the needle rod penetration hole 11. The needle introduction rod 4 can rotate in the needle rod penetration hole 11.

[0043] In some specific embodiments, the perforating aimer for ankle fracture surgery also includes a spring plunger 6, and the needle tube end is provided with a plunger assembly groove perpendicular to the axis of the needle rod penetration hole 11, the plunger assembly groove penetrates the hole wall of the needle rod penetration hole 11 and is connected with the needle tube penetration hole 11, the spring plunger 6 is fixed in the plunger assembly groove and its plug can be extended into the needle rod penetration hole 11 and abut against the outer wall surface of the needle guide rod 4.

[0044] In some specific examples, a positioning groove 42 is provided on the outer wall surface of the needle-introducing rod 4 , and the plug head of the spring plunger 6 can be elastically engaged with the positioning groove 42 .

[0045] The plug head of the spring plunger 6 is elastically engaged with the positioning groove 42 to limit the rotation of the needle guide tube 4.

[0046] Specifically, the positioning groove 42 is a plurality of positioning blind holes or a long strip groove. A plurality of positioning blind holes are arranged at equal intervals on the outer wall of the needle guide rod along the length direction of the needle guide rod; or a long strip groove is arranged on the outer wall of the needle guide rod 4 along the length direction of the needle guide rod 4.

[0047] Specifically, the spring plunger 6 includes a sleeve 61, a spring 62 and a plug 63. The plug 63 is slidably disposed in the sleeve 61. The spring 62 is placed in the sleeve 61 with one end abutting against the inner bottom wall of the sleeve 61 and the other end fixedly connected to the bottom of the plug 63.

[0048] The outer wall of the sleeve 61 is processed with external threads, and the plunger assembly hole is a threaded hole. When installing the spring plunger 6, first apply thread glue on the thread of the sleeve 61, then slowly screw the spring plunger 6 into the plunger assembly hole until the head of the plunger 63 is exposed in the needle rod penetration hole 11. When the thread glue solidifies, the spring plunger 6 is fixed in the plunger assembly hole.

[0049] In other specific examples, the perforating aimer for ankle fracture surgery also includes a locking bolt 7. A threaded hole perpendicular to the axis of the needle rod penetration hole 11 is also provided on the end of the needle tube. The threaded hole penetrates the hole wall of the needle rod penetration hole 11 and is connected with the needle tube penetration hole 11. The locking bolt 7 can be screwed into the needle rod penetration hole 11 through the threaded hole and abutted and locked with the positioning groove 42.

[0050] After the locking bolt 7 abuts against the positioning groove 42, screwing the locking bolt 7 in can apply radial force to the positioning groove 42 to limit the axial movement of the needle guide rod 4. The length of the locking bolt 7 is greater than the depth of the threaded hole.

[0051] In other specific embodiments, the punching aimer for ankle fracture surgery also includes a rotating rod 8 and a locking nut 9. The rotating rod 8 includes a threaded section and a smooth rod section. An assembly hole is opened on the rotating connection end. The smooth rod section is rotatably connected in the assembly hole and the bottom extends out of the assembly hole and is fixedly connected to the arc-shaped rotating arm 2. The threaded section is located at the axial outer end of the assembly hole and is threadedly connected to the locking nut 9.

[0052] In some specific examples, the rod body at the bottom of the smooth rod section of the rotating rod passes through the arc-shaped rotating arm and is fixed by a pin, and the end of the rotating rod threaded section away from the arc-shaped rotating arm is fixedly connected to a rotating rod limiting plate 81.

[0053] A gasket that can fill the gap may be arranged between the locking nut and the rotating connection end of the arc-shaped rotating arm, and the first threaded section of the rotating rod passes through the gasket and is threadedly connected to the locking nut.

[0054] In some specific examples, a through hole is formed at the other end of the arc-shaped rotating arm 2, and a fixed end of the positioning rod 3 is fixed in the through hole.

[0055] Specifically, the fixed end of the positioning rod 3 passes through the through hole and is connected to the limiting plate 31. The plate area of ​​the limiting plate 31 is larger than the area of ​​the through hole. Corresponding pin holes are opened on the rod body of the fixed end of the positioning rod 3 and the arc-shaped rotating arm 2. The pin passes through the pin holes on the positioning rod 3 and the arc-shaped rotating arm 2 to fix the positioning rod 3 in the through hole of the arc-shaped rotating arm 2.

[0056] In other specific examples, the inner wall of the needle hole 41 of the needle guide rod 4 away from the positioning ball 5 is processed with a chamfered slope for easy insertion of the orthopedic needle 100; the end face of the needle guide rod 4 corresponding to the positioning ball 5 is processed with a serrated structure for easy positioning.

[0057] Specifically, a plurality of weight-reducing holes 12 are provided on the arc-shaped plate 1 .

[0058] When the device is in use, first, the arc plate is placed around the patient's ankle, and the positions of the arc plate and the arc rotating arm are adjusted to determine the best route for the orthopedic needle to penetrate the bone at the fracture site; then, the needle guide rod is rotated so that its positioning groove is engaged with the plug of the spring plunger; then, the needle guide rod is pushed until the serrated structure on the needle guide rod penetrates the patient's ankle skin and is tightly attached to the cortical bone of the ankle, and the locking bolt is screwed in so that the head of the locking bolt rests against the positioning groove of the needle guide rod, and the locking bolt is continued to be screwed in to apply axial force to the needle guide rod so that the needle guide rod cannot move; finally, the orthopedic needle is slowly inserted from the end of the needle guide rod away from the positioning ball, and the orthopedic needle penetrates the patient's ankle along the preset route and touches the positioning ball to complete the perforation.

[0059] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A perforation sight for ankle fracture surgery, to which an orthopedic needle (100) can be connected, characterized in that: include: An arc-shaped plate (1), the arc-shaped plate (1) comprising an arc-shaped plate body, a rotating connection end and a needle tube end, the rotating connection end and the needle tube end being formed by extending outwardly from both ends of the arc-shaped plate body along a tangential direction; An arc-shaped rotating arm (2), one end of the arc-shaped rotating arm (2) being parallel to the rotating connection end in a tangential direction and rotatably connected through 360 degrees; A needle guide rod (4), the needle guide rod (4) being vertically inserted into the needle tube end and having a needle hole (41) axially opened inside the needle guide rod, the orthopedic needle (100) being slidably inserted into the needle hole (41), and the center line of the center of the needle hole (41) intersecting the rotation axis of the arc-shaped rotating arm (2) at point O; A positioning rod (3), the positioning rod (3) having a fixed end and a free end, the fixed end being fixedly connected to the other end of the arc-shaped rotating arm (2), and the free end extending to the point O and corresponding to the needle tip of the orthopedic needle (100) in front and back.

2. The perforation sight for ankle fracture surgery according to claim 1, characterized in that: It also comprises a positioning ball (5), wherein the positioning ball (5) is fixedly connected to the free end of the positioning rod (3).

3. The perforation sight for ankle fracture surgery according to claim 1, characterized in that: The needle tube end is provided with a needle rod penetration hole (11), and the needle guide rod (4) is slidably connected to the needle rod penetration hole (11).

4. The perforation sight for ankle fracture surgery according to claim 3, characterized in that: It also includes a spring plunger (6), the needle tube end is provided with a plunger assembly groove perpendicular to the axis of the needle rod penetration hole (11), the spring plunger (6) is fixed in the plunger assembly groove and its plug can extend into the needle rod penetration hole (11) and abut against the outer wall of the needle guide rod (4).

5. The perforation sight for ankle fracture surgery according to claim 4, characterized in that: The outer wall surface of the needle guide rod (4) is provided with a positioning groove (42), and the plug head of the spring plunger (6) can be elastically engaged with the positioning groove (42).

6. The perforation sight for ankle fracture surgery according to claim 5, characterized in that: It also includes a locking bolt (7), and the needle tube end is provided with a threaded hole perpendicular to the axis of the needle rod penetration hole (11). The locking bolt (7) can be screwed into the needle rod penetration hole (11) through the threaded hole to abut and lock with the positioning groove (42).

7. The perforation sight for ankle fracture surgery according to claim 1, characterized in that: It also comprises a rotating rod (8) and a locking nut (9), the rotating rod (8) comprising a threaded section and a smooth rod section, the rotating connection end is provided with an assembly hole, the smooth rod section is rotatably connected in the assembly hole and the bottom thereof extends out of the assembly hole to be fixedly connected to the arc-shaped rotating arm (2), the threaded section is located at the axially outer end of the assembly hole and is threadedly connected to the locking nut (9).

8. The perforation sight for ankle fracture surgery according to claim 7, characterized in that: The rod body at the bottom of the smooth rod section of the rotating rod (8) passes through the arc-shaped rotating arm (2) and is fixed by a pin, and the end of the threaded section of the rotating rod (8) away from the arc-shaped rotating arm (2) is fixedly connected to a rotating rod limiting plate (81).

9. The perforation aiming device for ankle fracture surgery according to claim 1, characterized in that: The other end of the arc-shaped rotating arm (2) is provided with a through hole, and the fixed end of the positioning rod (3) is fixed in the through hole.

10. The perforation aiming device for ankle fracture surgery according to claim 2, characterized in that: The inner wall of the end of the needle hole (41) of the needle guide rod (4) away from the positioning ball (5) is processed with a chamfered inclined surface for facilitating the insertion of the orthopedic needle (100); and the end surface of the needle guide rod (4) corresponding to the positioning ball (5) is processed with a serrated structure for facilitating positioning.

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