TWM496451U - Positioning and sealing structure of bone screw tip - Google Patents

Description

Positioning sealing structure of bone nail tip

[0001] The present invention relates to a positioning and sealing structure of a nail nail tip, in particular to a positioning and sealing structure of a minimally invasive bone nail tip.

[0002] According to the general condition of the diseased part of the spine, it is clinically used to treat the lesion. One of the treatment methods is to stabilize the spine structure by screwing the plurality of bone nails and fixing plates on the front surface of the spine. In patients with severe osteoporosis, the effective fixation of the spinal nail in the patient is a surgical problem; and the patented case, for example, the domestic new patent No. M395455, which injects bone into the vertebrae Mud to strengthen the bone, however, because the end of the bone nail is not closed, it may cause the perfused bone mud to rush out of the osteoporosis part from the end, so that the bone mud spreads to the non-skeletal part, and even oppresses the nerve in the body. Or soft tissue such as blood vessels, but will cause more serious damage to patients.

[0003] The reason is that the creator is aiming at the above situation, in the spirit of perseverance and the purpose of excellence, actively researching and improving, and constantly trying and experimenting, finally developed and designed this creation.

[0004] The present invention mainly provides a positioning and sealing structure for a nail nail tip, in particular, a positioning sealing structure for treating a bone nail tip of a patient with osteoporosis, and the problem to be solved is related to the aforementioned surgery. The shortcomings of improper bone marrow infusion of bone nails, this creation is to solve the problem of the problem, and to develop and improve breakthroughs, in order to avoid the improper injection of non-skeletal parts when the bones are absorbed.

[0005] The present invention relates to a positioning and sealing structure for a nail nail tip, which comprises a humeral nail body, a universal screw head and a boring bolt, wherein: the bone nail system comprises a combined head and a plurality of threaded teeth And an axial through hole and a plurality of radial drainage holes are formed in the bone nail body, wherein the axial through hole is bored between the joint head and the plurality of radial drainage holes, The bone mud is injected into the vertebral body in the clinical operation, and the bottom end surface of the bone nail body is a sharp open end; the universal screw head is a hollow U-shaped body and has a concave portion. The coupling head can be longitudinally received and the connecting rod is assembled laterally; and the bolt is embedded and locked in the open end of the bone nail body to form a closed state of the open end of the bone nail body to prevent The effect of bone mud leakage.

[0006] The present invention further provides a positioning and sealing structure for a nail nail tip, which comprises a humeral nail body, a universal screw head and a mouth element, wherein: the bone nail system comprises a combined head and a plurality of a threaded hole, and an axial through hole and a plurality of radial drainage holes are formed in the bone nail body, wherein the axial through hole is bored and communicated with the joint head and the plurality of radial drainage holes During the clinical operation, the injected bone mud is diverted into the vertebral body, and the bottom end surface of the bone nail body is a sharp open end; the universal screw head is a hollow U-shaped body and has a a recessed portion for longitudinally receiving the joint head and laterally assembling a connecting rod; and the sealing member comprises a rod body, a grip portion and an inserting portion, the grip portion being integrally formed on the upper end of the rod body The insert has a larger outer diameter than the rod body, and the insert portion is integrally formed at a lower end of the rod body, and the joint portion of the insert portion and the rod body surrounds a broken portion, and the insert portion is embedded and locked. When the open end of the bone nail body, the fracture portion generates stress concentration Disconnect, enabling the obturator fitted to the open end of the portion of the nail body, and form a closed state, the bone cement serve to achieve the effect of preventing leakage.

[0007] The following detailed description is given by way of specific examples and drawings, so that the reviewing committee can further understand the technical features of the present invention.

[0018]

10‧‧‧ bone nail body

11‧‧‧Combined head

111‧‧‧Spiral

12‧‧‧ thread

13‧‧‧Axial through hole

14‧‧‧ radial drainage holes

15‧‧‧Open end

16‧‧‧First inner screw joint

20‧‧‧ universal screw head

21‧‧‧ recess

22‧‧‧Second inner screw joint

23‧‧‧ Connecting rod

30‧‧‧ bolt

31‧‧‧First external screw joint

32‧‧‧ four-corner trench

40‧‧‧ bones

41‧‧‧Bone vertebral body

50‧‧‧Bone Mud

60‧‧‧ Screwdriver

61‧‧‧End

70‧‧‧ Sealing elements

71‧‧‧ rod body

72‧‧‧ Holding Department

73‧‧‧ embedded department

74‧‧‧Fracture

731‧‧‧Second outer screw

[0008]

1 is a perspective view showing a first embodiment of a positioning sealing structure of a nail tip;

Figure 2 is a cross-sectional view taken along line A-A of Figure 1;

3 is an exploded perspective view of the positioning sealing structure of the nail tip of the present invention;

Figure 4 is a partial enlarged view of Figure 3;

Figure 5 is a schematic view showing the combination of the screwdriver and the bolt of Figure 3;

6 is a schematic diagram 1 of the state of use of the first embodiment of the present invention, which shows that the nail is screwed into the bone, and the screwdriver tool gradually enters the body of the bone nail;

Figure 7 is a second schematic view of the use state of Figure 6 showing the state in which the screwdriver tool enters the bone nail body;

Figure 8 is a schematic view of the operation state of Figure 7 in connection with Figure 7, which shows the situation in which the screwdriver tool fixes the bolt screw in the bone nail body;

Figure 9 is a schematic view of the operation state of Figure 8 in connection with Figure 8, which shows that the screwdriver tool has been withdrawn from the body of the bone nail;

Figure 10 is a schematic view showing the state of the injected bone mud in Figure 9;

Figure 11 is a schematic view showing the application of the bone nail structure of the present invention to human bones;

12 is a perspective view showing a second embodiment of the positioning sealing structure of the nail tip of the present invention;

Figure 13 is a partial enlarged view of the sealing member of Figure 12;

Figure 14 is a cross-sectional view taken along line B-B of Figure 13;

Figure 15 is a schematic view of the use state of the second embodiment of the present invention, which shows a situation in which the sealing element enters the body of the bone nail;

Fig. 16 is a second schematic view of the use state of Fig. 15 in which the embedding portion of the sealing member is screwed into the body of the nail and the broken portion of the sealing member is withdrawn from the body of the nail.

The above described objects and advantages of the present invention are not limited to the detailed description of the selected embodiments and the accompanying drawings.

[0010] First, please refer to FIG. 1 to FIG. 5, the first embodiment of the present invention includes a bone nail body 10, a cymbal fixing plate 20 and a boring bolt 30, wherein:

[0011] The bone nail body 10 is a hollow hollow body structure of a titanium alloy material, and the bone nail body 10 includes a joint head 11 and a plurality of thread teeth 12, and is inside the bone nail body 10 An axial through hole 13 and a plurality of radial drainage holes 14 are provided, and the plurality of radial drainage holes 14 are symmetrically arranged at a bottom position of the bone nail body 10, wherein the axial through hole The 13-series is drilled and connected between the joint head 11 and the plurality of radial drainage holes 14, so as to facilitate the clinical operation to introduce the injected bone mud 40 into the skeletal body 31, and the bone nail body 10 The bottom end surface is a sharp open end 15 , and the inner side of the axial through hole 14 of the bone nail body 10 is provided with a first inner screw portion 16 adjacent to the open end 15 , whereby the bone vertebral body 31 to be operated at the surgical position is provided. Inserting a guiding needle (not shown), the axial through hole 13 and the open end 15 of the bone nail body are fitted to the outer edge of one end of the guiding needle, under the guidance of the guiding needle, Clearly identifying the position of the implanted bone nail; wherein the inner surface of the joint head 11 further includes a screw portion 111, and the screw portion 111 is provided with a screw lock It is formulated in the holding position by screw rotation, a rotation of the bone screw by Bineng body fixing screw 10 so as to be located at each of the vertebral bone 31.

[0012] The universal screw head 20 is generally a hollow U-shaped body and has a recess 21 for longitudinally receiving the joint head 11 and laterally assembling a connecting rod 23, wherein the joint head 11 has a screw The end portion of the universal screw head 20 is adjusted to be rotated and positioned in the U-shaped body of the universal screw head 20. The second inner screwing portion 22 is provided, and the locking rod 23 can be screwed and fixed by a locking nut (not shown). In clinical use, the physician assembles the connecting rod 23 to several bones. In the concave portion 21 of the corresponding screw head 20 of the positioning and sealing structure of the nail tip, the connecting rod 23 and the nail body 10 are respectively locked to the bone 40 by the locking nut.

[0013] Please refer to FIG. 6 to FIG. 9 at the same time, which is a schematic diagram showing the continuous decomposition operation of the first embodiment of the present invention. The bolt 30 has a first outer threaded portion 31. The bolt 30 is provided with a concave four-corner groove 32 in the middle of the end surface, and the end portion 61 of the corresponding screwdriver 60 extends into the adjusting bolt. The first inner threaded portion 16 of the bone nail body 10 and the first outer threaded portion 31 of the bolt 30 are screwed to each other to form the open end 15 of the bone nail body 10 in a closed state, so as to achieve safe and accurate The bone mud 50 is injected into the skeletal body 31, and the sputum can prevent the improper injection of the bone mud 40 into the non-skeletal vertebral body 31.

[0014] Please refer to FIG. 10 and FIG. 11 for a schematic view of the first embodiment of the present invention, which is shown in a surgical operation, which is used to guide the injected bone mud 50 into the vertebral body 31 in a clinical operation. In other words, the bone mud 40 injected from the axial through hole 13 of the bone nail body 10 is guided to the bone vertebral body 31 through the radial drainage holes 14 , so that the bone nail body 10 can be combined with the bone mass. The loose bone vertebral body 31 produces a stable screw-solid structure, which is advanced to strengthen the surgical fixation effect between the bone nail body 10 and the bone vertebral body 31.

[0015] Please refer to FIG. 12, which is a perspective view of a second embodiment of the present invention. The difference between the second embodiment and the first embodiment is that the mouthpiece element 70 includes a rod body 71, a grip portion 72 and an embedding portion 73. The grip portion 72 is integrally formed on the rod portion 71. The upper end of the rod body 71 has a larger outer diameter than the rod body 71 for providing a user's finger to pinch and rotate the rod body 71; the inserting portion 73 is integrally formed at the lower end of the rod body 71. The embedded portion 73 has a bolt structure, and a second outer screw portion 731 is formed on the outer surface of the insert portion 73, and the insert portion 73 is tapered with the rod body 71. The fracture portion 74 (shown in Figures 13 and 14).

[0016] Please refer to FIG. 15 , which is a schematic diagram of the action of the second embodiment of the present invention. When the user wants to close the open end 15 of the bone nail body 10, firstly, the sealing member 70 is inserted. In the axial through hole 13 of the nail body 10, as the sealing member 70 continues to enter, the rotation is adjusted to make the first inner screw portion 16 of the bone nail body 10 and the second outer screw of the insert portion 73. The connecting portions 731 are screwed to each other, and the embedded portion 73 is configured to close the open end 15 of the bone nail body 10; further, as shown in FIG. 16, when the embedded portion 73 is screwed and positioned, The rod body 71 and the fitting portion 73 are separated by continuously rotating the rod body 71 such that the fracture portion 74 generates a stress concentration phenomenon to cause disconnection. Therefore, the embedding portion 73 of the sealing member 70 stabilizes the screw and closes the open end 15 of the bone nail body 10, thereby facilitating the subsequent injection of the bone mud 50 into the grouting filling operation, thereby preventing the improper injection of the bone mud 40 into the diversion flow. To the soft tissue or blood vessels of the non-skeletal vertebral body 31, it can effectively prevent patients from causing more serious complications after surgery.

[0017] The above embodiments are merely illustrative of the principles and functions of the present invention and are not intended to limit the main technical features and scope of the present invention. Therefore, those skilled in the art can make modifications and changes to the above embodiments without departing from the spirit of the present invention. This creation has the industrial applicability, novelty and progress, and meets the requirements of new patents.

10‧‧‧ bone nail body

12‧‧‧ thread

14‧‧‧ radial drainage holes

20‧‧‧ universal screw head

21‧‧‧ recess

22‧‧‧Second inner screw joint

30‧‧‧ bolt

31‧‧‧First external screw joint

60‧‧‧ Screwdriver

61‧‧‧End

Claims (1)

A positioning and sealing structure for a nail nail tip, comprising:
a bone nail body, which is made of a hollow titanium alloy, the bone nail system comprises a combined head and a plurality of threaded teeth, wherein the bone nail body is bored with an axial through hole and a plurality of diameters. a plurality of radial drainage holes, wherein the plurality of radial drainage holes are disposed at a position suitable for the bottom of the bone nail body, and the bottom end surface of the bone nail body is an open end; and a bolt is embedded therein And locking in the open end of the bone nail body to form an open end of the bone nail body in a closed state, so as to prevent leakage of the filling bone mud to the bottom end surface.
2. The positioning and sealing structure of the nail nail tip according to claim 1, wherein the inner side of the axial through hole of the bone nail body is provided with a first inner threaded portion adjacent to the open end, and the bolt has a first outer threaded portion is configured such that the first inner threaded portion of the bone nail body and the first outer threaded portion of the bolt are screwed to each other.
3. The positioning and sealing structure of the nail nail tip according to claim 1, wherein the bolt has a concave four-corner groove in the middle of one end surface, and the end portion of the tool for a screwdriver is inserted. Adjust the rotation of the bolt.
4. The positioning sealing structure of the nail nail tip according to claim 1, wherein the bone nail body further comprises a universal screw head, wherein the universal screw head has a hollow U-shaped body and has a concave portion. , the 俾 can be longitudinally accommodated in the joint head.
5. The positioning sealing structure of the nail nail tip according to claim 4, wherein the coupling head has a screwing portion for facilitating adjustment and rotation of the bone nail body, and the bonding head of the bone nail body Then, it is located in the universal screw head to adjust the rotational positioning, and a second inner screwing portion is disposed on the U-shaped inner surface of the universal screw head.
6. A positioning and sealing structure for a nail nail tip, comprising:
a bone nail body, which is made of a hollow titanium alloy, the bone nail system comprises a combined head and a plurality of threaded teeth, wherein the bone nail body is bored with an axial through hole and a plurality of diameters. a plurality of radial drainage holes are disposed at a position suitable for the bottom of the bone nail body, and an end portion of the bone nail body is an open end; and a port member includes a rod body, a grip portion and an embedding portion, wherein the grip portion is integrally formed on the upper end of the rod body, and has a larger outer diameter than the rod body, and the embedding portion is integrally formed on the rod body a lower end, and the embedded portion is connected with the rod body to form a breaking portion. When the inserting portion is inserted and screwed to the open end of the bone nail body, the broken portion is snail due to the embedded portion The solid concentration causes a stress concentration phenomenon to cause disconnection, so that the insert portion is closed to close the open end of the bone nail body, thereby achieving the effect of preventing leakage of the filling bone mud to the bottom end surface.
7. The positioning and sealing structure of the nail nail tip according to the sixth aspect of the invention, wherein the inner side of the axial through hole of the bone nail body is provided with a first inner threaded portion adjacent to the open end, and the sealing element is The embedded portion has a bolt structure, and a second outer screw portion is formed on the outer surface of the insert portion, so that the first inner screw portion of the bone nail body and the second outer screw portion of the insert portion Screw the locators to each other.
8. The positioning and sealing structure of the nail nail tip according to claim 6, wherein the bone nail body further comprises a universal screw head, wherein the universal screw head has a hollow U-shaped body and has a concave portion. , the 俾 can be longitudinally accommodated in the joint head.
9. The positioning and sealing structure of the nail nail tip according to claim 8, wherein the coupling head has a screwing portion for facilitating adjustment and rotation of the bone nail body, and the bone nail body is coupled to the head. Then, it is located in the universal screw head to adjust the rotational positioning, and a second inner screwing portion is disposed on the U-shaped inner surface of the universal screw head.