Hollow forcing screw parallel placement guider
By inserting the guide in parallel with the hollow pressurized screws, the problem of difficulty in drilling the K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S-K-S
Patent Information
- Application Number
- CN202421672635.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-07-16
AI Technical Summary
In the prior art, it is difficult for K-Spirit needles to drill into the fracture block in parallel, resulting in the position of the hollow screws not parallel, and the failure to effectively pressurize and fix the fracture block, increasing the surgical time and risk of complications.
A hollow pressurized screw parallel insertion guide is designed, including a guide handle, sliding bracket, proximal fixing sleeve and distal sliding sleeve. By adjusting the casing distance and angle, the K-Spirit pin and screw are screwed in parallel to achieve effective pressurized fixation.
The parallel placement of multiple screws is achieved to adapt to the needs of different fracture block sizes and locations, reduce the operation time, reduce the risk of complications, and improve the compression and fixation effect of fracture blocks.
Smart Images
Figure CN223068577U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of fracture fixation, and particularly relates to a hollow compression screw parallel insertion guide. Background Art
[0002] In the clinical treatment of fractures, for small fracture fragments and fracture fragments with large tension such as ligament and tendon attachment points, hollow compression screws are usually selected for reduction and internal fixation. The operation process is as follows: after reducing the fracture fragment, use an electric drill to drill 2-3 thin Kirschner wires into the fracture fragment to temporarily fix the fracture fragment, then screw in the hollow compression screw along the thin Kirschner wire to fix the fracture fragment and exert a compression effect on the fracture fragment, and finally pull out the thin Kirschner wire. To avoid micro-movement and rotation of the fracture fragment when fixed with a single hollow screw, usually 2 or more hollow screws need to be screwed in. To ensure that multiple hollow screws can uniformly compress and fix the fracture fragment when tightened together, it is required that several Kirschner wires initially used to temporarily fix the fracture fragment should be drilled into the fracture fragment in parallel. Currently, the drilling of Kirschner wires is usually done by a surgeon manually or with the help of a single-hole guide. It is very difficult to achieve completely parallel drilling when drilling two or more thin Kirschner wires separately, and it is also very difficult to make the positions of two hollow compression screws screwed in parallel along the thin Kirschner wires parallel. Two non-parallel screws will cause the fracture fragment to not be compressible. Surgeons usually need to operate multiple times to drill two or more thin Kirschner wires in parallel, which increases the operation time and also increases the risk of surgical complications. Content of the Utility Model
[0003] In view of this, the utility model aims to propose a hollow compression screw parallel insertion guide to solve at least one of the problems existing in the above-mentioned prior art.
[0004] To achieve the above object, the technical solution of the utility model is realized as follows:
[0005] A hollow compression screw parallel insertion guide includes a guide handle, a guide sliding bracket, a proximal fixed sleeve of the guide, and a distal sliding sleeve of the guide. One side of the guide sliding bracket is fixedly installed with the guide handle. A sliding groove is opened in the middle of the guide sliding bracket. The proximal fixed sleeve of the guide is fixedly installed at one end of the sliding groove close to the guide handle, and the distal sliding sleeve of the guide is installed at the end of the sliding groove far from the guide handle.
[0006] Further, the guide handle, the guide sliding bracket, the proximal fixed sleeve of the guide, and the distal sliding sleeve of the guide are all made of stainless steel.
[0007] Further, the connection angle range between the guide handle and the guide sliding bracket is 90° - 180°.
[0008] Further, the length of the guide slider bracket is 2 cm - 5 cm, the width of the guide slider bracket is 0.6 cm - 1.6 cm, and the width of the sliding groove is 0.5 cm - 1.5 cm.
[0009] Further, the guide handle is of a cylindrical structure, the length of the guide handle is 4 cm - 10 cm, and the outer diameter of the guide handle is 0.6 cm - 1.6 cm.
[0010] Further, the proximal fixed sleeve of the guide includes a sleeve body, a first proximal core and a second proximal core. The outer diameter of the sleeve body is 5 mm - 15 mm, the length of the sleeve body is 15 mm - 40 mm, and the end of the sleeve body is of a serrated structure;
[0011] The first proximal core and the second proximal core are sleeved inside the sleeve body. The lengths of the first proximal core and the second proximal core are equal to that of the sleeve body. The second proximal core is located inside the first proximal core. The outer edges of the openings of the first proximal core and the second proximal core are 1 mm wide;
[0012] The outer diameter of the first proximal core is 4 mm - 14 mm, the inner diameter of the hollow of the first proximal core is 2.8 mm - 3.9 mm. The hollow diameter of the first proximal core matches the outer diameter of the second proximal core. The center of the second proximal core is of a hollow structure. The outer diameter of the second proximal core is 2.8 mm - 3.9 mm, and the diameter of the central hole of the second proximal core is 1 mm - 1.5 mm.
[0013] Further, the upper 1 / 3 part of the distal sliding sleeve of the guide is provided with an external thread. A fixing nut is installed at the distal end of the external thread. The fixing nut is located below the guide slider bracket. A reinforcing nut is sleeved on the proximal end of the external thread. The reinforcing nut is located above the guide slider bracket.
[0014] Further, the distal sliding sleeve of the guide further includes a first distal core and a second distal core. The second distal core is sleeved inside the sleeve body of the distal sliding sleeve of the guide. The first distal core is sleeved inside the second distal core. The structures of the first distal core and the second distal core are respectively the same as those of the first proximal core and the second proximal core.
[0015] Compared with the prior art, the hollow compression screw parallel insertion guide of the present utility model has the following advantages:
[0016] The hollow compression screw parallel insertion guide of the present utility model has a distal sliding sleeve of the guide, which can adjust the distance between the two sleeves according to the needs of the nail insertion point and the size of the fracture fragment, and at the same time ensure that the guide pin, Kirschner wire and screw can be screwed in parallel with each other, realizing effective compression fixation of the fracture fragment. Brief Description of the Drawings
[0017] The drawings that form a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:
[0018] Figure 1 is a three-dimensional schematic view of the overall structure according to an embodiment of the present utility model;
[0019] Figure 2 is a connection schematic view of the guide handle and the guide sliding bracket according to an embodiment of the present utility model;
[0020] Figure 3 is a top view schematic view of the overall structure according to an embodiment of the present utility model;
[0021] Figure 4 is a schematic view of the first proximal core according to an embodiment of the present utility model;
[0022] Figure 5 is a schematic view of the second proximal core according to an embodiment of the present utility model;
[0023] Figure 6 is an unfolded schematic view of the overall structure according to an embodiment of the present utility model;
[0024] Figure 7 is a front view schematic view of the overall structure according to an embodiment of the present utility model.
[0025] Description of the Reference Numerals:
[0026] 1. Guide handle; 2. Guide sliding bracket; 21. Sliding groove; 3. Proximal fixed sleeve of the guide; 31. First proximal core; 32. Second proximal core; 4. Distal sliding sleeve of the guide; 41. External thread; 42. Fixing nut; 43. Reinforcing nut; 44. First distal core; 45. Second distal core. Detailed Description of the Preferred Embodiments
[0027] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.
[0028] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.
[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.
[0030] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.
[0031] As Figures 1 to 7 shown, the parallel insertion guide for the hollow compression screw consists of 4 parts (as Figure 1 shown): the guide handle 1, the guide sliding bracket 2, the proximal fixed sleeve 3 of the guide, and the distal sliding sleeve 4 of the guide. Among them, the guide handle 1, the guide sliding bracket 2, and the proximal fixed sleeve 3 of the guide are an integral body, and the distal sliding sleeve 4 of the guide can slide back and forth on the guide sliding bracket 2, enabling it to adjust the distance between the insertion points of two Kirschner wires according to the size of the fracture fragment and the position of the insertion point. The parallel insertion guide for the hollow compression screw is made of stainless steel.
[0032] This parallel insertion guide for the screw has the distal sliding sleeve 4 of the guide, which can adjust the distance between the two sleeves according to the need of the insertion point and the size of the fracture fragment, and at the same time ensure that the guide pin, Kirschner wire, and screw can be screwed in parallel to each other, achieving effective compression fixation of the fracture fragment.
[0033] The angle between the guide handle 1 and the guide sliding bracket 2 is between 90° and 180°, and different angles can be made according to clinical needs. The length of the guide sliding bracket 2 is 2 cm - 5 cm, the outer diameter width of the guide sliding bracket 2 is 0.6 cm - 1.6 cm, and the inner diameter width of the guide sliding bracket 2 is 0.5 cm - 1.5 cm. The guide handle 1 is cylindrical, with a length of 4 cm - 10 cm and a diameter of 0.6 cm - 1.6 cm.
[0034] The guide proximal fixing sleeve 3 is located at the position of the guide sliding bracket 2 close to the handle end and is an integral part with the guide sliding bracket 2 and cannot slide on the guide sliding bracket 2. The diameter of the guide proximal fixing sleeve 3 is 5 mm - 15 mm, and the length is 15 mm - 40 mm. The end of the guide proximal fixing sleeve 3 is a serrated structure to facilitate stable attachment to the surface of the fracture fragment. The guide proximal fixing sleeve 3 is sleeved with a first proximal core 31 and a second proximal core 32. The lengths of the first proximal core 31 and the second proximal core 32 are equal to that of the guide proximal fixing sleeve 3. The second proximal core 32 is located in the first proximal core 31. The outer edge width of the pipe orifice of the first proximal core 31 and the second proximal core 32 is 1 mm, and the outer edge functions to prevent the first proximal core 31 and the second proximal core 32 from slipping out of the sleeve. The outer diameter of the first proximal core 31 is 4 mm - 14 mm, and its hollow inner diameter is 2.8 mm - 3.9 mm. The hollow diameter matches the outer diameter of the second proximal core 32. The center of the second proximal core 32 is hollow. The outer diameter of the second proximal core 32 is 2.8 mm - 3.9 mm, and the center hole diameter is 1 mm - 1.5 mm. When the first proximal core 31 and the second proximal core 32 are placed into the proximal fixing sleeve, a thin Kirschner wire or a hollow compression screw guide pin can be drilled through the center hole of the second proximal core 32. After drilling the hollow compression screw guide pin, the second proximal core 32 is pulled out. An opening drill or a tapping tool can be drilled along the guide pin through the first proximal core 31 to prepare for the insertion of the hollow compression screw. Then the first proximal core 31 is pulled out, and a hollow compression screw can be screwed in through the thin Kirschner wire or the hollow compression screw guide pin.
[0035] On the upper 1 / 3 part of the distal sliding sleeve 4 of the director, there is an external thread 41. At the distal end of the external thread 41, there is a fixing nut 42 which is integral with the distal sliding sleeve 4 of the director, unable to rotate or move, and is located below the sliding bracket 2 of the director; a reinforcing nut 43 is sleeved on the proximal end of the external thread 41 and is located above the sliding bracket 2 of the director. The reinforcing nut 43 can rotate and move along the thread towards the distal end of the sleeve. When the reinforcing nut 43 rotates and moves towards the distal end to the sliding bracket 2 of the director and is tightened, it produces a pressing effect with the fixing nut 42, so that the distal sliding sleeve 4 of the director is fixed on the sliding bracket 2 of the director; after the reinforcing nut 43 is rotated and loosened, the distal sliding sleeve 4 of the director can slide on the sliding bracket 2 of the director. The distance between the distal sliding sleeve 4 of the director and the proximal fixing sleeve 3 of the director can be adjusted according to the size of the fracture fragment and the need of the screw insertion point, and it can also ensure that the insertion directions of the screws are parallel to each other, which fully plays a pressing role in the reduction and fixation of the fracture fragment. In addition, the distal sliding sleeve 4 of the director further includes a first distal core 44 and a second distal core 45. The functions and structures of the first distal core 44 and the second distal core 45 are the same as those of the first proximal core 31 and the second proximal core 32.
[0036] Currently, when multiple screws need to be applied to a fracture fragment for parallel compression fixation, the screw guide pins and screws are usually drilled manually by a surgeon or drilled successively with the aid of a single-hole director. The parallel drilling of multiple guide pins or screws cannot be achieved. Two screws with non-parallel positions cannot perform compression fixation on the fracture fragment, thereby affecting the effective reduction and fixation of the fracture fragment. The hollow compression screw parallel insertion director of the present application not only realizes the parallel insertion of two or more screws, but also can adjust the position spacing of the two screws according to the size of the fracture fragment and the position of the screw insertion point, meeting the screw insertion requirements for different fracture fragments and fractures at different positions. At the same time, when flexibly applied, it can also be used for the parallel insertion of more than two compression screws.
[0037] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. Hollow compression screw parallel insertion guide, characterized in that: It includes a guide handle (1), a guide sliding bracket (2), a proximal fixed sleeve (3) of the guide, and a distal sliding sleeve (4) of the guide. One side of the guide sliding bracket (2) is fixedly installed with the guide handle (1). A sliding groove (21) is provided in the middle of the guide sliding bracket (2). The proximal fixed sleeve (3) of the guide is fixedly installed at one end of the sliding groove (21) close to the guide handle (1), and the distal sliding sleeve (4) of the guide is installed at one end of the sliding groove (21) far from the guide handle (1).
2. The parallel placement guide for the hollow compression screw according to claim 1, characterized in that: The guide handle (1), the guide sliding bracket (2), the proximal fixed sleeve (3) of the guide, and the distal sliding sleeve (4) of the guide are all made of stainless steel structure.
3. The parallel insertion guide for the hollow compression screw according to claim 1, characterized in that: The connection angle range between the guide handle (1) and the guide sliding bracket (2) is 90° - 180°.
4. The parallel insertion guide for the hollow compression screw according to claim 1, wherein: The length of the guide sliding bracket (2) is 2 cm - 5 cm, the width of the guide sliding bracket (2) is 0.6 cm - 1.6 cm, and the width of the sliding groove (21) is 0.5 cm - 1.5 cm.
5. The parallel insertion guide for the hollow compression screw according to claim 1, characterized in that: The guide handle (1) is of cylindrical structure. The length of the guide handle (1) is 4 cm - 10 cm, and the outer diameter of the guide handle (1) is 0.6 cm - 1.6 cm.
6. The parallel insertion guide for hollow compression screws according to claim 1, characterized in that: The proximal fixed sleeve (3) of the guide includes a sleeve body, a first proximal core (31) and a second proximal core (32). The outer diameter of the sleeve body is 5 mm - 15 mm, the length of the sleeve body is 15 mm - 40 mm, and the end of the sleeve body is of serrated structure; The first proximal core (31) and the second proximal core (32) are sleeved inside the sleeve body. The lengths of the first proximal core (31) and the second proximal core (32) are equal to that of the sleeve body. The second proximal core (32) is located in the first proximal core (31). The outer edges of the tube openings of the first proximal core (31) and the second proximal core (32) are 1 mm wide; The outer diameter of the first proximal core (31) is 4 mm - 14 mm, the inner diameter of the hollow of the first proximal core (31) is 2.8 mm - 3.9 mm. The hollow diameter of the first proximal core (31) matches the outer diameter of the second proximal core (32). The center of the second proximal core (32) is of hollow structure. The outer diameter of the second proximal core (32) is 2.8 mm - 3.9 mm, and the diameter of the central hole of the second proximal core (32) is 1 mm - 1.5 mm.
7. The parallel placement guide for the hollow compression screw according to claim 1, wherein: External threads (41) are provided at the upper 1 / 3 part of the distal sliding sleeve (4) of the guide. A fixing nut (42) is installed at the distal end of the external threads (41). The fixing nut (42) is located below the guide sliding bracket (2). A reinforcing nut (43) is sleeved on the proximal end of the external threads (41). The reinforcing nut (43) is located above the guide sliding bracket (2).
8. The parallel insertion guide for hollow compression screws according to claim 7, characterized in that: The distal sliding sleeve (4) of the guide also includes a first distal core (44) and a second distal core (45). The second distal core (45) is sleeved inside the sleeve body of the distal sliding sleeve (4) of the guide. The first distal core (44) is sleeved inside the second distal core (45). The structures of the first distal core (44) and the second distal core (45) are the same as those of the first proximal core (31) and the second proximal core (32), respectively.