CN220275691U - Bone screw facilitating cable penetration - Google Patents

Bone screw facilitating cable penetration Download PDF

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Publication number
CN220275691U
CN220275691U CN202321410816.2U CN202321410816U CN220275691U CN 220275691 U CN220275691 U CN 220275691U CN 202321410816 U CN202321410816 U CN 202321410816U CN 220275691 U CN220275691 U CN 220275691U
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CN
China
Prior art keywords
bone
screw
bone screw
cable
thread
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CN202321410816.2U
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Chinese (zh)
Inventor
詹雅涵
周郁芳
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A Plus Biotechnology Co ltd
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A Plus Biotechnology Co ltd
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Abstract

The utility model relates to a bone screw facilitating cable penetration, comprising: the screw head comprises a crown structure and a thread structure, wherein the crown structure comprises at least one pair of through holes, the through holes are used for penetrating a cable to fix the bone screw on the bone plate, the outer side surface of the thread structure is provided with first threads, and the inner bottom surface of the crown structure is provided with star-shaped locking grooves. The utility model does not need to drill the through hole for threading the cable on the bone plate, and has the advantages of reducing the processing cost when manufacturing the bone plate and avoiding the bone plate from being damaged due to the weakening of the strength and the influence of stress.

Description

Bone screw facilitating cable penetration
Technical Field
The utility model relates to the technical field of medical bone nails, in particular to a bone screw which is beneficial to the threading of cables.
Background
The adult bone has 206 blocks and is divided into four parts of skull, trunk bone, upper limb bone and lower limb thigh. They are distributed on various parts of the whole body, and bones of human body have the function of supporting the body and also can protect internal organs; the body can take various postures and actions, which are generally accomplished by the cooperation of bones, muscles and various joints.
All bones of the human body vary in shape, size, with some being larger, such as the tibia, humerus, etc., and some being smaller, such as the phalanges, etc. There are five types of bone shapes: long bones, short bones, flat bones, irregular bones, and air-bearing bones.
When the bones in the human body are fractured, the treatment method can use an open reduction internal fixation technology, wherein the method is to cut open soft tissues such as skin, muscle and the like of the fracture part to expose the bones so as to be beneficial to the operation of reduction fracture and dislocation. During open reduction, the internal fixator is locked in the patient to fix the fracture end. In addition, according to the fracture of different parts, the corresponding internal fixation mode can be adopted, and the corresponding internal fixation equipment such as a bone plate, a round bone needle, an intramedullary nail (nail), a screw, a cable, a stainless steel wire and the like can be selected according to the requirement.
In the internal fixation device, the appearance of the screw is a cylinder shape, the surface of the screw is provided with a concave-convex structure of the thread groove, and the screw can be locked on the bone plate and the bone by utilizing the thread structure.
However, sometimes, because the screws fixed on the bone plate are loosened, the bone plate is usually loosened, so that the healing of the fracture part is slow, and even the bone plate implantation fails, in order to avoid the situation, a plurality of through holes are formed in the bone plate in part of the prior art, and after the bone plate is installed on the fracture part, a plurality of stainless steel wires (or titanium alloy cables) are used for penetrating through the through holes of the bone plate (as shown in fig. 1), and then the stainless steel wires (or titanium alloy cables) are used for reinforcing and fixing the bone plate and the bone, however, in the reinforcing and fixing mode, the stress is increased to improve the stress of the unit area on the bone plate, and the blood transportation of the fracture part is poor due to the fact that the bone film is pressurized; in addition, the penetration of multiple perforations into the bone plate can also compromise the original strength of the bone plate.
Based on the above-mentioned shortcomings, there is a need to develop further techniques suitable for reinforcing fixation of bone plates, which allow good recovery of damaged fractures after surgery.
Disclosure of Invention
In order to solve the above-mentioned problems, unlike the prior art in which a cable is threaded on a bone plate, the present utility model provides a bone screw which facilitates threading of the cable, comprising: the screw head comprises a crown structure and a thread structure, wherein the crown structure comprises at least one pair of through holes, the through holes are used for penetrating a cable to fix the bone screw on the bone plate, the outer side surface of the thread structure is provided with first threads, and the inner bottom surface of the crown structure is provided with star-shaped locking grooves.
In an embodiment, the bone screw further includes a threaded portion connected to the threaded portion and extending from a lower end of the threaded portion to form a second thread on a surface of the threaded portion; and a cone part forming the lower end of the thread part, wherein the cone part is provided with a tip, and at least one cutting groove is formed on the surface of the cone part and extends to the second thread.
In an embodiment, the at least one pair of through holes are bilaterally symmetrical.
In one embodiment, the diameter of the threaded head through hole is in the range of 1.0-2.0mm.
In one embodiment, the diameter of the threaded portion is larger than the diameter of the threaded portion.
In one embodiment, the diameter of the screw head is greater than the diameter of the cone.
In one embodiment, the star lock recess includes an inverted conical body.
In an embodiment, the locking groove includes at least four channels, and the at least four channels encircle the conical body.
In one embodiment, the number of the trench structures is six.
In an embodiment, the bone screw is made of steel, titanium or titanium 6 aluminum 4 vanadium.
Drawings
Fig. 1 is a block diagram of a prior art bone plate that may be used for cable threading.
Fig. 2 is a view showing an external structure of a bone screw for facilitating the threading of a cable according to the present utility model.
Fig. 3 is a view showing another external construction of the bone screw for facilitating the threading of a cable according to the present utility model.
FIG. 4 is a schematic view of a bone screw structure for facilitating cable threading according to an embodiment of the present utility model
Fig. 5 is a schematic view of a bone screw structure for facilitating cable penetration according to another embodiment of the present utility model.
Fig. 6 is a schematic view of a bone screw structure of the present utility model with a cable threaded.
Fig. 7 is a schematic view of a detail of the screw head of a bone screw of the present utility model for facilitating cable penetration.
Fig. 8 is a schematic view of another angle of the screw head of the bone screw of the present utility model for facilitating cable penetration.
Fig. 9 is a schematic view of a further angle of a detail of the screw head of a bone screw of the present utility model that facilitates cable penetration.
Fig. 10 is a schematic view of a bone screw according to an embodiment of the present utility model secured to a bone plate.
Fig. 11 is a schematic view of a bone screw with a cable threaded through the bone plate according to an embodiment of the present utility model.
The figures are marked as follows:
200 bone screw
202 screw head
202a crown structure
202b screw thread structure
204 screw thread portion
206 taper portion
216, perforation
208 second thread
212 tip end
210 cutting groove
214 first screw thread
302 Cable
410 locking groove
410a inverted conical body
410b channel structure
502 bone plate
504 bone
Detailed Description
The following embodiments of the present utility model will be described in detail with reference to specific examples, and those skilled in the art will readily appreciate the effects and advantages of the present utility model from the disclosure of the present specification. And the utility model is capable of other embodiments and its details are capable of modifications and various other changes, which may be made without departing from the utility model.
The utility model will be described in terms of preferred embodiments and aspects, such description being for the purpose of illustrating the structure of the utility model and not for the purpose of limiting the utility model as claimed. Thus, the present utility model can be widely practiced in other embodiments than those described in the specification.
The utility model relates to a bone screw 200 which is beneficial to the threading of cables, and provides two types of shapes, as shown in fig. 2 and 3, the bone screw 200 shown in fig. 2 and 3 comprises a screw head 202, a thread part 204 and a cone part 206, and the two types of shapes are different from each other in a crown-shaped structure 202a of the screw head; the crown 202a of the screw head of fig. 2 presents a tapered configuration expanding from the top to the waist, whereas the crown 202a of the screw head of fig. 3 presents a cylindrical configuration from the top to the waist.
For ease of illustration, the bone screw 200 shown in fig. 2 is used as an example in all of the following figures. As shown in fig. 4 and 5, wherein fig. 4 is a front view of bone screw 200 and fig. 5 is a side view of bone screw 200. The bone screw comprises a screw head 202, a thread 204 and a taper 206, wherein the screw head 202 (comprising a crown 202a and a thread 202 b) has a plurality (2) of through holes 216, wherein the thread 202b has a first thread 214 on the outer side; the threaded portion 204 extends from the lower end of the threaded portion 202, and the surface of the threaded portion 204 has a second thread 208; the taper 206 is formed at the lower end of the threaded portion 204 and has a tip 212. In addition, at least one cutting groove 210 is provided on the surface of the taper portion 206, and the cutting groove 210 extends to the second thread 208 of the above-described thread portion 204.
Referring to fig. 4 and 5, the screw head 202, the threaded portion 204 and the tapered portion 206 of the bone screw 200 of the present utility model are sequentially integrally formed, and a plurality of (2) perforations 216 of the screw head 202 may be used to pass through a cable to facilitate the fixation of the bone screw to the bone plate. The diameter of the screw head 202 is larger than the diameters of the screw thread 204 and the cone 206, and the first screw thread 214 is arranged on the outer side surface of the screw thread structure 202b of the screw head 202, so that the bone screw is penetrated through a bone plate and fixed in the bone by the structure, and is screwed and locked on the bone plate by the first screw thread 214, and the diameter of the screw head 202 is larger than the diameter of the screw thread 204 so as to ensure that the bone screw can be identified to be fixed in the bone. In one embodiment, the length of the threaded portion 202 of the bone screw 200 may be maintained, but the appropriate length of the threaded portion 204 and the tapered portion 206 may be tailored to the size of the bone, e.g., in one particular case, the threaded portion 204 and the tapered portion 206 may be omitted, leaving only the threaded portion 202 (including the crown 202a and the thread 202 b).
In one embodiment, FIG. 6 shows an embodiment in which a cable 302 is threaded through the screw head 202 of a bone screw of the present utility model. The bone screw of the present utility model may be used directly in bone plate hole and bone, or with cable 302 inserted through the head 202 of the bone screw to further strengthen the bone plate and bone screw. In one embodiment, to enable the use of multiple (2) perforations 216 of the screw head 202 for threading the cable 302, each perforation has a diameter size in the range of 1.0-2.0mm.
In one embodiment, as shown in the structure of the bone screw head 202 in fig. 7 to 9, fig. 7 is a perspective view of the bone screw head 202, fig. 8 is a top view of the bone screw head 202, and fig. 9 is a front view of the bone screw head 202.
The screw head 202 of the bone screw has 2 perforations 216 arranged symmetrically and opposite to each other for threading the cable. In one embodiment, referring to FIG. 9, the diameter size of each perforation 216 ranges from 1.0-2.0mm. In one embodiment, referring to fig. 8, the inside of the screw head 202 is a hollow structure, and a locking groove 410 is provided at the bottom of the inside of the screw head.
Referring to fig. 7 to 9, the top of the bone screw according to the present utility model is a screw head 202, and a locking groove 410 is provided at the bottom of the inner side of the screw head, so that the bone screw is conveniently locked on the bone plate and bone, and the locking groove 410 is a star-shaped structure (as shown in fig. 8) comprising an inverted cone body (as a groove body) 410a and a plurality of canal-shaped structures 410b, so that an operator can insert the locking groove 410 with a corresponding tool and lock the bone screw on the bone and bone plate.
In one embodiment, the number of the plurality of canal structures 410b is at least four, and at least four canal structures 410b surround the cone body 410a.
In one embodiment, the preferred number of the trench structures 410b is six.
In an embodiment, the bone screw may be made of titanium or titanium 6 aluminum 4 vanadium (Ti 6Al 4V). In another embodiment, the bone screw may be made of steel.
As shown in fig. 4 to 5, the bone screw 200 of the present utility model has a conical portion 206 at the bottom, wherein the conical portion 206 is an inverted cone, and the conical portion has a tip for drilling hard bone through the bone surface; in addition, at least one cutting groove 210 is provided on the surface of the taper portion 206, and the cutting groove 210 may be used to enhance the cutting strength and to fix the bone screw 200 of the embodiment of the present utility model to the hard bone.
As shown in FIG. 10, a bone screw 200 of the present utility model is shown secured to a bone plate 502 according to one embodiment. After the operator inserts the bone screw into the through hole of the bone plate, the corresponding tool is inserted into the locking groove of the screw head to twist, so that the taper portion and at least one cutting groove of the bone screw penetrate through the hard bone portion of the bone 504, and the thread portion 204 is mostly immersed into the bone 504, and the second thread 208 of the screw head is screwed and locked on the bone plate 502, so as to fix the bone plate 502 on the bone 504.
In one embodiment, when the operator observes the severity of the fracture of the patient and decides to strengthen the bone plate to be secured to the bone, the cable 302 may be secured after being looped around the bone and bone plate and through the hole of the screw head 202 of the bone screw 200 according to one embodiment shown in fig. 11. In one embodiment, the above-described fixation may also provide for locking of bone plate 502 to bone 504 in addition to enhancing the stability of bone screw 200 to bone plate 502 in embodiments of the present utility model. In one embodiment, the bone screw 200 of the present utility model may be used to fix bone plates 502 at different fracture sites (e.g., humerus, ulna, tibia, femur, etc.), and the cable 302 may be threaded through the screw head 202 of the bone screw 200 for additional fixation.
In the embodiment of the utility model, the through holes for penetrating the cable are not required to be drilled on the bone plate, so that the processing cost for manufacturing the bone plate can be reduced, and the bone plate can be prevented from being damaged due to the fact that the strength of the bone plate is weakened and the bone plate is influenced by stress. In an embodiment, the cable material may be titanium or titanium 6 aluminum 4 vanadium (Ti 6Al 4V). In another embodiment, the cable material may be steel. In one embodiment, the bone screw and the cable are made of titanium or titanium 6 aluminum 4 vanadium (Ti 6Al 4V), so that the bone screw and the cable should not cause anaphylactic reaction in the human body after being implanted in the human body.
The foregoing description is of the preferred embodiment of the utility model. Those skilled in the art will appreciate that they are meant to be illustrative and not limiting of the scope of the claimed utility model. The scope of the patent is to be determined by the claims appended hereto and their equivalents. Modifications and variations which may be made by those skilled in the art without departing from the spirit or scope of the utility model are intended to be included within the scope of the following claims.

Claims (10)

1. A bone screw for facilitating cable penetration, comprising:
the screw head comprises a crown structure and a thread structure, wherein the crown structure comprises at least one pair of through holes, the through holes are used for penetrating a cable to fix the bone screw on the bone plate, the outer side surface of the thread structure is provided with first threads, and the inner bottom surface of the crown structure is provided with star-shaped locking grooves.
2. The bone screw for facilitating cable entry of claim 1, further comprising:
the screw thread part is connected with the screw head part and extends from the lower end of the screw head part to form a second screw thread on the surface of the screw thread part; and
and the cone part is formed at the lower end of the threaded part, is provided with a tip, and forms at least one cutting groove on the surface of the cone part and extends to the second thread.
3. The bone screw of claim 1, wherein the at least one pair of bores are bilaterally symmetrical.
4. A bone screw for facilitating threading of a cable according to claim 3 wherein said threaded head portion has a diameter in the range of 1.0-2.0mm.
5. The bone screw for facilitating threading of a cable according to claim 2 wherein the diameter of the threaded portion is greater than the diameter of the threaded portion.
6. The bone screw of claim 2, wherein the threaded head has a diameter greater than the diameter of the taper.
7. The bone screw of claim 1, wherein the star lock recess comprises an inverted cone body.
8. The bone screw of claim 7, wherein the locking recess comprises at least four channels surrounding the cone body.
9. The bone screw of claim 8, wherein the number of channels is six.
10. The bone screw for facilitating threading of cables according to claim 1 wherein the bone screw is made of steel, titanium or titanium 6 aluminum 4 vanadium.
CN202321410816.2U 2023-05-15 2023-06-05 Bone screw facilitating cable penetration Active CN220275691U (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW112204767 2023-05-15
TW112204767U TWM647747U (en) 2023-05-15 2023-05-15 A bone screw facilitating cable passing

Publications (1)

Publication Number Publication Date
CN220275691U true CN220275691U (en) 2024-01-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321410816.2U Active CN220275691U (en) 2023-05-15 2023-06-05 Bone screw facilitating cable penetration

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CN (1) CN220275691U (en)
TW (1) TWM647747U (en)

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Publication number Publication date
TWM647747U (en) 2023-11-01

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