Novel hollow hexagonal screwdriver rod
By designing the combination of fixed sleeve, limiting spring and anti-blocking of the hollow hexagonal driver rod, the problem of difficult rotation of the sleeve and tail cap in the spiral blade is separated and difficult to rotate, and normal implantation and treatment of the spiral blade is achieved.
Patent Information
- Application Number
- CN202420300630.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-19
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-02-19
AI Technical Summary
The inner sleeve and tail cap of the existing spiral blade are difficult to re-rotate after being unlocked too much, resulting in failure of the operation.
A new hollow hexagonal driver rod is designed, including the rod cylinder, the hexagonal diameter-seeking end and the hexagonal rotating end. The re-rotation of the inner sleeve and the tail cap is achieved through the combination of the fixed sleeve, the limiting spring and the anti-blocking.
Simplified operation, ensure normal implantation and treatment of spiral blades, and improve the success rate of the surgery.
Smart Images
Figure CN222285602U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of medical instruments, in particular to a novel hollow hexagonal screwdriver rod. Background Art
[0002] PFNA intramedullary nails are widely used. The core of PFNA intramedullary nails is to use the unlocking and locking functions of the spiral blade to fix the femoral neck. Due to the special feature of the spiral blade that can be unlocked, excessive unlocking may occur during surgery, resulting in the inability to reposition the spiral blade, that is, the inner sleeve and the tail cap are separated, and it is difficult to assist with external force to re-screw it, resulting in surgical failure. In order to solve the above problems, we propose a new hollow hexagonal screwdriver rod. Utility Model Content
[0003] The utility model aims to provide a novel hollow hexagonal screwdriver rod, which solves the problem that the inner sleeve of the existing spiral blade is difficult to be screwed together again after being separated from the tail cap.
[0004] The above technical purpose of the utility model is achieved through the following technical scheme: a new type of hollow hexagonal screwdriver rod, including a rod barrel, the two ends of the rod barrel surface are respectively filed into a hexagonal diametric end and a hexagonal rotating end, the surface of the hexagonal rotating end is slidingly sleeved with a fixed sleeve, the surface of the hexagonal diametric end is provided with a mounting groove, a base plate is provided inside the mounting groove, a groove is provided on one side of the base plate, a limiting spring is bolted between the inside of the groove and the mounting groove through a spring fixing sheet, and an anti-dropping block is welded on the other side of the base plate.
[0005] By adopting the above technical solution, the inner sleeve and the tail cap can be easily screwed together again, the operation is simple and labor-saving, and the normal implantation and treatment of the spiral blade are guaranteed.
[0006] The utility model is further configured as follows: rotating rods are symmetrically welded on the surface of the fixing sleeve.
[0007] By adopting the above technical solution and setting the rotating rod, it is convenient for a person to drive the fixed sleeve to rotate by hand.
[0008] The utility model is further configured as follows: the rod barrel, the hexagonal diametric end and the hexagonal rotating end are all made of medical stainless steel.
[0009] By adopting the above technical solution, the rod barrel, the hexagonal caliper end and the hexagonal rotating end have the characteristics of high strength, low density and excellent corrosion resistance.
[0010] The utility model is further configured as follows: the diameter of the hexagonal rotating end is greater than the diameter of the hexagonal diametric end.
[0011] The adoption of the above technical solution can facilitate personnel to understand the position of the insertion end.
[0012] The utility model is further configured as follows: a limiting rod is welded inside the installation groove, a limiting groove is opened on one side of the base plate, and the other end of the limiting rod extends to the inside of the limiting groove.
[0013] By adopting the above technical solution, the base plate and the anti-slip block can be limited by setting the limiting rod and the limiting groove, so as to prevent the base plate and the anti-slip block from tilting during the collection process.
[0014] The utility model is further configured as follows: the anti-dropping block is in an arc shape.
[0015] The utility model is further configured as follows: the limit spring is made of carbon spring steel.
[0016] By adopting the above technical solution, the limit spring has the characteristics of excellent mechanical properties, good anti-elasticity, low temperature resistance and corrosion resistance.
[0017] The utility model is further configured as follows: the diameter of the hexagonal diametric end is smaller than the diameter of the rod barrel.
[0018] By adopting the above technical solution, after one end of the hexagonal diametric end is inserted into the inner sleeve, the rod tube and the tail cap are abutted against each other.
[0019] The utility model is further configured as follows: the interior of the rod barrel is hollow.
[0020] The adoption of the above technical solution can facilitate the product to slide inward along the surface of the guide needle.
[0021] The utility model is further configured that: a lubricant is smeared inside the rod barrel.
[0022] The adoption of the above technical solution can improve the smoothness of the sliding of the rod barrel.
[0023] In summary, the utility model has the following beneficial effects:
[0024] The utility model has the following steps: firstly, the rod barrel is picked up and slides down along the guide needle in the spiral blade. After the rod barrel slides to the bottom, the head end of the hexagonal diameter-finding end is located in the inner sleeve in the spiral blade. At this time, the anti-slip block is in a fitted state with the inner wall of the inner sleeve. The rod barrel is held by hand and pressed downward. When the rod barrel is pressed downward, the anti-slip block is forced to be retracted into the installation groove. Since the limit spring has elasticity, the limit spring will cause the anti-slip block to form a resistance state with the inner wall of the inner sleeve when it rebounds. Finally, the rod barrel is held by hand to drive the inner sleeve to be lifted and rotated, so that the inner sleeve and the tail cap can be screwed together again. The operation is simple and labor-saving, and the normal implantation and treatment of the spiral blade are guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1It is a three-dimensional diagram of the structure of the utility model;
[0026] Figure 2 It is a front sectional view of the structure of the utility model;
[0027] Figure 3 It is an enlarged sectional view of the left side of the structure of the utility model;
[0028] Figure 4 It is an enlarged schematic diagram of the right side of the structure of the utility model;
[0029] Figure 5 This utility model Figure 3 A magnified view of the structure in the middle.
[0030] Figure numerals: 1, rod barrel; 2, hexagonal diametric end; 3, hexagonal rotating end; 4, fixed sleeve; 5, mounting groove; 6, base plate; 7, groove; 8, limit spring; 9, anti-drop block; 10, rotating rod; 11, limit rod; 12, limit groove. DETAILED DESCRIPTION
[0031] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0032] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A new type of hollow hexagonal screwdriver rod comprises a rod barrel 1. The two ends of the surface of the rod barrel 1 are respectively filed into a hexagonal diametric end 2 and a hexagonal rotating end 3. The surface of the hexagonal rotating end 3 is slidably sleeved with a fixed sleeve 4. The surface of the hexagonal diametric end 2 is provided with a mounting groove 5. A base plate 6 is provided inside the mounting groove 5. A groove 7 is provided on one side of the base plate 6. A limit spring 8 is bolted between the inside of the groove 7 and the mounting groove 5 through a spring fixing sheet. An anti-dropping block 9 is welded on the other side of the base plate 6. By first picking up the rod barrel 1 and sliding it down along the guide pin in the spiral blade, the rod barrel 1 can slide down. After it reaches the bottom, the head end of the hexagonal diametric end 2 will be in the inner sleeve of the spiral blade. At this time, the anti-slip block 9 is in a fit with the inner wall of the inner sleeve. Hold the rod barrel 1 with your hand and press it downward. When the rod barrel 1 is pressed downward, the anti-slip block 9 is forced to be retracted into the installation groove 5. Since the limit spring 8 is elastic, the limit spring 8 will cause the anti-slip block 9 to form a resistance state with the inner wall of the inner sleeve when it rebounds. Finally, hold the rod barrel 1 to drive the inner sleeve to lift and rotate it, which can facilitate the re-screwing of the inner sleeve and the tail cap. The operation is simple and labor-saving, which ensures the normal implantation and treatment of the spiral blade.
[0033] refer to Figure 1 , Figure 2 and Figure 4The surface of the fixed sleeve 4 is symmetrically welded with a rotating rod 10. Through the arrangement of the rotating rod 10, it is convenient for a person to drive the fixed sleeve 4 to rotate by hand.
[0034] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The rod barrel 1, the hexagonal diametric end 2 and the hexagonal rotating end 3 are all made of medical stainless steel. The rod barrel 1, the hexagonal diametric end 2 and the hexagonal rotating end 3 have the characteristics of high strength, low density and excellent corrosion resistance.
[0035] refer to Figure 1 and Figure 2 The diameter of the hexagonal rotating end 3 is larger than the diameter of the hexagonal diametric end 2, which makes it easier for personnel to understand the position of the insertion end.
[0036] refer to Figure 5 A limiting rod 11 is welded inside the mounting groove 5, a limiting groove 12 is provided on one side of the base plate 6, and the other end of the limiting rod 11 extends to the inside of the limiting groove 12. By setting the limiting rod 11 and the limiting groove 12, the base plate 6 and the anti-detachment block 9 can be limited to prevent the base plate 6 and the anti-detachment block 9 from tilting during the collection process.
[0037] refer to Figure 5 , the shape of the anti-falling block 9 is arc-shaped.
[0038] refer to Figure 5 The limit spring 8 is made of carbon spring steel and has the characteristics of excellent mechanical properties, good anti-elasticity, low temperature resistance and corrosion resistance.
[0039] refer to Figure 1 and Figure 2 The diameter of the hexagonal diametric end 2 is smaller than the diameter of the rod tube 1. After one end of the hexagonal diametric end 2 is inserted into the inner sleeve, the rod tube 1 and the tail cap are abutted against each other.
[0040] refer to Figure 2 The interior of the shaft barrel 1 is hollow, which can facilitate the product to slide inward along the surface of the guide needle.
[0041] refer to Figure 2 The inside of the rod barrel 1 is coated with lubricant, which can improve the smoothness of the rod barrel 1 when sliding.
[0042] A brief description of the usage process: first pick up the rod barrel 1 and slide it down along the guide needle in the spiral blade. After the rod barrel 1 slides to the bottom, the head end of the hexagonal diameter-finding end 2 will be in the inner sleeve in the spiral blade. At this time, the anti-slip block 9 is in a fit with the inner wall of the inner sleeve. Hold the rod barrel 1 with your hand and press it downward. When the rod barrel 1 is pressed downward, the anti-slip block 9 will be forced into the installation groove 5. Since the limit spring 8 is elastic, the limit spring 8 will cause the anti-slip block 9 to form a resistance state with the inner wall of the inner sleeve when it rebounds. Finally, hold the rod barrel 1 to drive the inner sleeve to lift and rotate.
[0043] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.
Claims
1. A novel hollow hexagonal screwdriver rod, comprising a rod barrel (1), characterized in that: The two ends of the surface of the rod barrel (1) are respectively filed into a hexagonal diametric end (2) and a hexagonal rotating end (3); a fixed sleeve (4) is slidably sleeved on the surface of the hexagonal rotating end (3); a mounting groove (5) is provided on the surface of the hexagonal diametric end (2); a base plate (6) is provided inside the mounting groove (5); a groove (7) is provided on one side of the base plate (6); a limit spring (8) is bolted between the inside of the groove (7) and the mounting groove (5) via a spring fixing sheet; and an anti-dropping block (9) is welded on the other side of the base plate (6).
2. A novel hollow hexagonal screwdriver rod according to claim 1, characterized in that: The surface of the fixed sleeve (4) is symmetrically welded with a rotating rod (10).
3. A novel hollow hexagonal screwdriver rod according to claim 1, characterized in that: The rod barrel (1), the hexagonal diametric end (2) and the hexagonal rotating end (3) are all made of medical stainless steel.
4. A novel hollow hexagonal screwdriver rod according to claim 1, characterized in that: The diameter of the hexagonal rotating end (3) is greater than the diameter of the hexagonal diametric end (2).
5. A novel hollow hexagonal screwdriver rod according to claim 1, characterized in that: A limiting rod (11) is welded inside the installation groove (5), a limiting groove (12) is provided on one side of the base plate (6), and the other end of the limiting rod (11) extends into the inside of the limiting groove (12).
6. A novel hollow hexagonal screwdriver rod according to claim 1, characterized in that: The anti-fall-off block (9) is in an arc shape.
7. A novel hollow hexagonal screwdriver rod according to claim 1, characterized in that: The limit spring (8) is made of carbon spring steel.
8. A novel hollow hexagonal screwdriver rod according to claim 1, characterized in that: The diameter of the hexagonal diametric end (2) is smaller than the diameter of the rod barrel (1).
9. A novel hollow hexagonal screwdriver rod according to claim 1, characterized in that: The interior of the rod tube (1) is hollow.
10. A novel hollow hexagonal screwdriver rod according to claim 1, characterized in that: The interior of the rod barrel (1) is coated with lubricant.