Ball head holder

Abstract

The utility model relates to a bulb holder, including base, strike handle, clamping subassembly and strike head, the base includes the through hole of base along the axial direction, strike handle includes the handle body, the clamping subassembly includes a plurality of clamps, a plurality of clamps are connected to the lower part of base, and strike head is connected to the lower part of base. At least one of the plurality of clamps is hinged with the base; the striking head is fixedly connected with the tail end of the handle body, and the striking head is positioned in a space formed by folding the plurality of clamps; the opening and closing angle of the bulb holder can be adjusted according to the size of a bulb.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a ball head holder used for holding and striking a ball head in joint replacement surgery. Background Art

[0002] Orthopedic surgery, especially joint replacement surgery, requires precise manipulation and fixation of the various components of the artificial joint. As a crucial component of the joint, the precise placement and fixation of the ball head is crucial to the success of the surgery. A ball head gripper is often used to secure and manipulate the ball head during surgery. This device, particularly in joint replacement surgery, helps surgeons position the ball head prototype or prosthesis onto the matching implant.

[0003] Existing ball head holders often have limited functionality, are complex to operate, and cannot accommodate ball heads of varying sizes and shapes, limiting surgical flexibility and efficiency. To ensure compatibility between the trial mold and the prosthesis, existing techniques incorporate mounting structures on the prosthesis to align with the ball head holder. However, this compromises the interplay between the prostheses and can potentially impact the functionality and effectiveness of long-term implants. Utility Model Content

[0004] The utility model aims to provide a ball head holder which can adjust the opening and closing angle according to the size of the ball head and can adapt to ball heads of different sizes and shapes.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] A ball head holder, comprising:

[0007] A base, the base comprising a through hole extending axially through the base;

[0008] a striking handle, the striking handle comprising a handle body, a lower portion of the handle body being located in the through hole of the base, and a distal end of the handle body extending out of the through hole;

[0009] a clamping assembly, the clamping assembly comprising a plurality of clamps, the plurality of clamps being connected to a lower portion of the base, and at least one of the plurality of clamps being hingedly connected to the base;

[0010] A striking head is fixedly connected to the end of the handle body, and the striking head is located in a space formed by closing a plurality of the clamps.

[0011] In one embodiment, the clamping assembly further includes an elastic member, which acts on the clamp and generates a force on the clamp to close the clamp.

[0012] In one embodiment, the clamping assembly further includes a fitting block, which is fixedly connected to the end of the clamp and has a fitting surface that matches the object being held.

[0013] In one embodiment, the hardness of the bonding block is less than the hardness of the object to be supported.

[0014] In one embodiment, the striking handle includes a gripping rod, a striking link, and a striking boss connected along the axial direction, wherein the striking link and the striking boss are respectively located at the lower portion and the upper portion of the gripping rod.

[0015] In one embodiment, the outer diameter of the striking rod is smaller than the inner diameter of the through hole, and the outer diameter of the gripping rod is larger than the inner diameter of the through hole.

[0016] In one embodiment, the bottom of the striking head is a striking surface, and the striking surface is matched with the outer peripheral surface of the object to be supported.

[0017] In one embodiment, the base is a cylindrical body, a plurality of grooves are provided at the lower portion of the cylinder, and one of the clamps is hingedly connected in each of the grooves.

[0018] In one embodiment, the clamping assembly further includes a knob, and the knob is slidably sleeved on the outer periphery of the base.

[0019] In one embodiment, the base includes a cylinder and two wing plates located at the lower part of the cylinder. The two wing plates are arranged opposite to each other and fixedly connected to the lower part of the cylinder. There are two clamps, and the two clamps are respectively fixed on opposite sides of the wing plates.

[0020] The present invention utilizes the aforementioned technical solution, resulting in the beneficial effect that the clamping assembly of the ball head holder provided by the present invention can adjust the opening and closing angles according to the size of the ball head, accommodating ball heads of varying sizes and shapes, thereby improving the flexibility and efficiency of intraoperative procedures. Furthermore, the ball head holder incorporates a ball head clamping device and a striking mechanism, facilitating the installation of a ball head trial mold or prosthesis. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the ball head holder in Example 1 is shown.

[0022] Figure 2 A schematic diagram of the base in Example 1 is shown.

[0023] Figure 3 A schematic diagram of the striking handle in Example 1 is shown.

[0024] Figure 4A schematic diagram of the striking head in Example 1 is shown.

[0025] Figure 5 A schematic diagram of the clamp in Example 1 is shown.

[0026] Figure 6 A schematic diagram of the bonding block in Example 1 is shown.

[0027] Figure 7 A schematic diagram of the ball head holder in Example 2 is shown.

[0028] Figure 8 A schematic diagram of the ball head holder in Example 3 is shown.

[0029] Figure 9 A schematic diagram of a base in Example 3 is shown.

[0030] Figure 10 A schematic diagram of the clamp in Example 3 is shown.

[0031] Figure 11 A schematic diagram of the knob in Example 3 is shown. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying drawings to describe in detail the preferred embodiments of the present invention so that the purpose, features and advantages of the present invention can be more clearly understood. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0033] In the following description, for the purpose of illustrating the various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other cases, well-known devices, structures, and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0034] Unless the context requires otherwise, throughout the specification and claims, the word "comprise" and variations such as "include" and "have" should be construed in an open, inclusive sense, that is, should be interpreted to mean "including, but not limited to."

[0035] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0036] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and / or" unless the context clearly dictates otherwise.

[0037] In the following description, in order to clearly demonstrate the structure and working mode of the present invention, many directional words will be used for description, but words such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and should not be understood as restrictive terms.

[0038] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0039] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0040] Example 1

[0041] like Figures 1-6 As shown, this embodiment proposes a ball head holder of a first structure, which includes a base 11 , a striking handle 12 , a striking head 13 and a clamping assembly 14 .

[0042] The base 11 includes a cylindrical body 111 and two wing plates 112 located at the lower portion of the body 111. The two wing plates 112 are spaced apart from each other and fixedly connected to the lower portion of the body 111. The body 111 has a through hole 1111 arranged along the axial direction of the body 111, and each wing plate 112 is provided with a hinge hole 1121 at both ends of the body 111 along the radial direction.

[0043] The striking handle 12 includes a gripping rod 121, a striking link 122, and a striking boss 123, which are axially connected to the gripping rod 121. The striking link 122 and the striking boss 123 are located at the lower and upper portions of the gripping rod 121, respectively. The outer diameter of the striking link 122 is slightly smaller than the inner diameter of the through hole 1111 of the barrel 111, allowing the striking link 122 to slide within the through hole 1111. The lower end of the striking link 122 extends outside the through hole 1111 and is fixedly connected to the striking head 13. The outer diameter of the gripping rod 121 is larger than the through hole 1111 of the barrel 111, which limits the sliding distance of the striking link 122 within the through hole 1111. The striking boss 123 is a disc-shaped structure formed at the top of the gripping rod 121, which increases the striking surface and facilitates the striking operation during surgery.

[0044] The striking head 13 is located below the cylinder 111 and is fixedly connected to the lower end of the striking connecting rod 122 passing through the through hole 1111. The bottom of the striking head 13 is a spherical striking surface 131 that is matched with the spherical surface of the ball head test mold 5.

[0045] The clamping assembly 14 is used to clamp and fix the ball head test mold 5. The clamping assembly 14 includes two clamps 141, which are hingedly connected to the radial ends of the two wing plates 112. The clamps 141 are hingedly connected to the wing plates 112 via a rotating shaft located in the hinge hole 1121, so that the two clamps 141 can be opened and closed. Each clamp 141 is also equipped with a torsion spring. The fixed legs at both ends of the torsion spring are respectively fixed to the clamp 141 and the wing plate 112. The torsion spring generates an elastic force on the respective clamps 141 to close the clamps, so that the clamps 141 can clamp and fix the ball head test mold 5. After the clamps 141 are fixed to the wing plate 112, a space for accommodating the striking head 13 and the ball head test mold 5 is formed at the bottom of the two clamps 141.

[0046] A fitting block 142 is also fixedly mounted on the end of the clamp 141. Fitting block 142 is made of a soft material, such as plastic, silicone, or rubber, with a lower hardness than the ball-end test mold 5, to prevent damage to the ball-end test mold 5 during clamping. Fitting block 142 can be secured to the clamp 141 by bonding, pinning, or taper locking. Fitting block 142 also has a fitting surface 1421 that fits against the outer wall of the ball-end test mold 5. This increases the gripping force of the clamp 141 when securing the ball-end test mold 5, preventing the ball-end test mold 5 from accidentally loosening and falling.

[0047] When in use, manually open the clamp 141, place the ball head trial mold 5 or the prosthesis between the two fitting blocks 142, and then loosen the clamp 141. The ball head trial mold 5 is clamped by the elastic force of the torsion spring of the clamp 141. Hold the holding rod 121 of the striking handle 12, place the ball head trial mold 5 or the prosthesis in the designated position, and then use the striking tool to knock the striking boss 123 until the ball head trial mold 5 or the prosthesis is installed. Finally, open the clamp 141 again, loosen the ball head trial mold 5 or the prosthesis to complete the installation of the ball head trial mold 5 or the prosthesis. The ball head holder provided in this embodiment is combined with the ball head clamping device and the striking device, which facilitates the installation of the ball head trial mold 5 or the prosthesis. In addition, the clamp of the clamping assembly 14 can also adjust the opening and closing angle according to the size of the ball head, and can adapt to ball heads of different sizes and shapes, thereby improving the flexibility and efficiency of intraoperative operations.

[0048] Example 2

[0049] like Figure 7 As shown, Figure 7 The second embodiment of the present invention illustrates a ball head holder with a second structure. This ball head holder is essentially the same as the first embodiment, comprising a base 21, a striking handle 22, a striking head 23, and a clamping assembly 24. The difference is that the clamping assembly 24 of the second embodiment is a single-sided opening and closing structure. The remaining components are identical to those in Example 1 and are therefore not described in detail. Specifically, the clamping assembly 24 in this embodiment also includes two clamps. One clamp 241a is hingedly connected to the base 21, while the other clamp 241b is rigidly fixed to the base 21. Clamp 241a can open and close relative to clamp 241b to accommodate ball heads of varying sizes and shapes.

[0050] Example 3

[0051] like Figures 8-11 As shown, Figure 8 The third structure of the ball head holder is shown in the figure. The ball head holder is basically the same as the ball head holder of the first structure, and also includes a base 31, a striking handle 32, a striking head 33 and a clamping assembly 34. The difference is that the base 31 and the clamping assembly 34 of the ball head holder of the third structure are different from the base and the clamping assembly in the first structure.

[0052] See also Figures 8-11 The base 31 in this embodiment is a columnar cylinder 311, which has a through hole 3111 arranged along the axial direction of the cylinder 311, and a plurality of grooves 3112 are provided at the lower part of the cylinder 311. The plurality of grooves 3112 divide the lower part of the cylinder 311 into a plurality of spaced fixing parts 3113, and each fixing part 3113 is provided with a hinge hole 3114.

[0053] The striking handle 32 has the same structure as that of Example 1, similarly comprising an axially connected gripping rod, a striking rod, and a striking boss. The striking rod and striking boss are located at the lower and upper portions of the gripping rod, respectively. The outer diameter of the striking rod is slightly smaller than the inner diameter of the through hole of the barrel, allowing it to slide within the through hole. The lower end of the striking rod extends beyond the through hole and is fixedly connected to the striking head. The outer diameter of the gripping rod is larger than the through hole of the barrel, limiting the sliding distance of the striking rod within the through hole. The striking boss is a disc-shaped structure formed at the top of the gripping rod, which increases the striking surface and facilitates the striking operation during surgery.

[0054] The structure of the striking head 33 is the same as that of Example 1. The striking head 33 is located below the cylindrical body 311 and is fixedly connected to the lower end of the striking connecting rod 322 passing through the through hole 3111. The bottom of the striking head 33 is a spherical socket-shaped striking surface that cooperates with the spherical surface of the ball head test mold 5.

[0055] The clamping assembly 34 is used to clamp and fix the ball head test mold 5. The clamping assembly 34 includes a plurality of clamps 341. The plurality of clamps 341 are located in the plurality of grooves 3112 at the lower portion of the cylinder 311 and are hingedly connected to the lower portion of the cylinder 311. Each clamp 341 is hingedly connected to the cylinder 311 via a rotating shaft located in the hinge hole 3114, so that the plurality of clamps 341 can be opened and closed. Each clamp 341 can also be installed with a torsion spring. The fixing legs at both ends of the torsion spring are respectively fixed to the clamp 341 and the cylinder 311. The torsion spring generates an elastic force on the respective clamps 341 to close the clamps, so that the clamps 341 can clamp and fix the ball head test mold 5. After the clamps 341 are fixed to the cylinder 311, a space for accommodating the striking head 33 and the ball head test mold 5 is formed at the lower portion of the plurality of clamps 341. In order to increase the gripping force of the clamp 341, a fitting block may be fixedly mounted on the end of the clamp 341. The structure of the fitting block is the same as that of the fitting block in Example 1 and will not be described in detail here.

[0056] The clamping assembly 34 in this embodiment further includes a knob 342. The knob 342 is a cylindrical structure that matches the barrel 311. The knob 342 is sleeved on the outer circumference of the barrel 311 and is threadedly connected to the barrel 311. The outer circumferential wall of the barrel 311 is provided with an external thread, and the inner circumferential wall of the knob 342 is provided with an internal thread that matches the external thread, so that the knob 342 is connected to the barrel 311 and can move along the axial direction of the barrel 311. In addition, during the downward movement of the knob 342, the inner wall of the knob 342 will also squeeze the claw body of the clamp 341 until the ball head test mold 5 is clamped.

[0057] During use, manually open the clamp 341, place the ball head test mold 5 or prosthesis between the multiple fitting blocks, then release the clamp 341. The ball head test mold 5 is clamped by the elastic force of the torsion spring of the clamp 341, and then the knob 342 is rotated clockwise. During the downward movement of the knob 342, the inner wall of the knob 342 will also squeeze the claw body of the clamp 341 until the ball head test mold 5 is clamped. Hold the gripping rod 321 of the striking handle 32, place the ball head test mold 5 or prosthesis in the designated position, and then strike the striking boss 323 with a striking tool until the ball head test mold 5 or prosthesis is installed. Then, rotate the knob 342 counterclockwise to move the knob upward and disengage the clamp 341. At the same time, open the clamp 341 and release the ball head test mold 5 or prosthesis to complete the installation of the ball head test mold 5 or prosthesis. The ball head holder provided in this embodiment combines a ball head clamping device and a striking device to facilitate the installation of the ball head test mold 5 or prosthesis. In addition, the clamp of the clamping assembly 34 can also adjust the opening and closing angle according to the size of the ball head, and can adapt to ball heads of different sizes and shapes, thereby improving the flexibility and efficiency of intraoperative operations.

[0058] While the preferred embodiments of the present invention have been described in detail above, it should be understood that, after reading the above teachings of the present invention, those skilled in the art may make various changes or modifications to the present invention. Such equivalents also fall within the scope of the claims appended hereto.

Claims

1. A ball head holder, characterized in that: include: A base, the base comprising a through hole extending axially through the base; a striking handle, the striking handle comprising a handle body, a lower portion of the handle body being located in the through hole of the base, and a distal end of the handle body extending out of the through hole; a clamping assembly, the clamping assembly comprising a plurality of clamps, the plurality of clamps being connected to a lower portion of the base, and at least one of the plurality of clamps being hingedly connected to the base; A striking head is fixedly connected to the end of the handle body, and the striking head is located in a space formed by closing a plurality of the clamps.

2. The ball head holder according to claim 1, wherein: The clamping assembly further includes an elastic member, which acts on the clamp and generates a force on the clamp to close the clamp.

3. The ball head holder according to claim 1, wherein: The clamping assembly further includes a fitting block, which is fixedly connected to the end of the clamp and has a fitting surface that matches the object being held.

4. The ball head holder according to claim 3, characterized in that: The hardness of the bonding block is less than the hardness of the object to be supported.

5. The ball head holder according to claim 1, wherein: The striking handle comprises a gripping rod, a striking connecting rod and a striking boss connected along the axial direction. The striking connecting rod and the striking boss are respectively located at the lower part and the upper part of the gripping rod.

6. The ball head holder according to claim 5, characterized in that: The outer diameter of the striking connecting rod is smaller than the inner diameter of the through hole, and the outer diameter of the holding rod is larger than the inner diameter of the through hole.

7. The ball head holder according to claim 1, wherein: The bottom of the striking head is a striking surface, and the striking surface is matched with the outer peripheral surface of the object to be supported.

8. The ball head holder according to claim 1, wherein: The base is a columnar cylinder, a plurality of grooves are provided at the lower part of the cylinder, and a clamp is hingedly connected in each of the grooves.

9. The ball head holder according to claim 8, characterized in that: The clamping assembly further includes a knob, which is slidably sleeved on the outer periphery of the base.

10. The ball head holder according to claim 1, wherein: The base includes a cylinder and two wing plates located at the lower part of the cylinder. The two wing plates are arranged opposite to each other and fixedly connected to the lower part of the cylinder. There are two clamps, which are respectively fixed on opposite sides of the wing plates.

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