阅读说明：本技术 一种医用骨钉 (Medical bone nail ) 是由 邹祥 于 2019-11-05 设计创作，主要内容包括：本发明提供一种医用骨钉。所述医用骨钉包括：八角连接杆；八角螺帽,所述八角螺帽滑动套设在所述八角连接杆上；圆型连接杆,所述圆型连接杆固定安装在所述八角连接杆的顶端；圆形螺帽,所述圆形螺帽螺纹套设在所述圆型连接杆上；第一圆杆,所述第一圆杆固定安装在所述八角连接杆上；第一通孔,所述第一通孔开设在所述第一圆杆的底端；螺旋形连接件,所述螺旋形连接件滑动安装在所述第一通孔内,所述螺旋形连接件的底端延伸至所述第一通孔外；第二圆杆,所述第二圆杆滑动安装在所述第一通孔内。本发明提供的医用骨钉具有使用方便,能够根据需要对骨钉上的连接件单独进行更换,节约资源,操作起来简单便捷的优点。(The invention provides a medical bone nail. The medical bone nail comprises: an octagonal connecting rod; the octagonal nut is sleeved on the octagonal connecting rod in a sliding manner; the circular connecting rod is fixedly arranged at the top end of the octagonal connecting rod; the round nut is sleeved on the round connecting rod in a threaded manner; the first round rod is fixedly arranged on the octagonal connecting rod; the first through hole is formed in the bottom end of the first round rod; the spiral connecting piece is slidably arranged in the first through hole, and the bottom end of the spiral connecting piece extends out of the first through hole; and the second round rod is slidably arranged in the first through hole. The medical bone nail provided by the invention has the advantages of convenience in use, capability of independently replacing the connecting piece on the bone nail according to needs, resource saving, and simplicity and convenience in operation.)

1. A medical bone nail, comprising:

an octagonal connecting rod;

the octagonal nut is sleeved on the octagonal connecting rod in a sliding manner;

the circular connecting rod is fixedly arranged at the top end of the octagonal connecting rod;

the round nut is sleeved on the round connecting rod in a threaded manner;

the first round rod is fixedly arranged on the octagonal connecting rod;

the first through hole is formed in the bottom end of the first round rod;

the spiral connecting piece is slidably arranged in the first through hole, and the bottom end of the spiral connecting piece extends out of the first through hole;

the second round rod is slidably mounted in the first through hole, and the top end of the second round rod is fixedly connected with the bottom end of the octagonal connecting rod;

the first groove is formed in the bottom end of the second round rod;

the third round rod is slidably mounted in the first groove, and the bottom end of the third round rod extends out of the first groove;

the first annular groove is formed in the inner wall of the first through hole;

the circular rotating plate is slidably mounted in the first annular groove, and the bottom end of the third round rod is fixedly connected with the top of the circular rotating plate;

the first spring is slidably sleeved on the third round rod, the top end of the first spring is fixedly connected with the bottom end of the second round rod, and the bottom end of the first spring is fixedly connected with the top of the circular rotating plate.

2. The medical bone nail according to claim 1, wherein a second annular groove is formed in the inner wall of the first groove, two sliding rods are slidably mounted in the second annular groove, and the ends of the two sliding rods, which are close to each other, are fixedly connected with a third round rod.

3. The medical bone nail according to claim 1, wherein a second groove is formed on one side of the first round bar, a second through hole is formed on an inner wall of the second groove on a side close to the spiral connecting member, a third through hole is formed on the spiral connecting member, and the same screw is arranged in the third through hole and the second groove.

4. The medical bone screw according to claim 3, wherein the inner wall of the second through hole is internally threaded, the screw is externally threaded, and the second through hole is in threaded connection with the screw.

5. The medical bone screw according to claim 3, wherein a slot is formed on an inner wall of one side of the first through hole, and the slot is slidably connected with the screw.

6. The medical bone screw of claim 1, wherein the first spring has a coefficient of stiffness in a range of 5N/m to 40N/m.

7. The medical bone nail according to claim 2, wherein a fourth through hole is opened at the top of the octagonal nut, and the fourth through hole is connected with the octagonal connecting rod in a sliding manner.

8. The medical bone nail according to claim 1, wherein a fifth through hole is formed at the top of the circular nut, an internal thread is formed on the inner wall of the fifth through hole, an external thread is formed on the circular connecting rod, and the circular connecting rod is in threaded connection with the fifth through hole.

9. The medical bone screw according to claim 2, wherein the ends of the two sliding rods that are away from each other are nested with first balls, and both the first balls are in contact with the inner wall of the second annular groove.

10. The medical bone screw according to claim 1, wherein a second ball is nested on the circular rotating plate and is fixedly connected with the inner wall of the first annular groove.

Technical Field

The invention relates to the technical field of medical treatment, in particular to a medical bone nail.

Background

The bone nail is a non-active surgical metal implant for osteosynthesis, consists of cortical bone nails (full threads and half threads) and cancellous bone nails (full threads and half threads), is generally applied to stabilizing new fractures, revision surgeries, joint fusion and rebuilding ossicles of feet, ankles and toes, can be used for adult and pediatric patients, and consists of a front-end cutting part, a middle-section cylinder and a tail part, wherein the cutting part is provided with a flat edge, a conical edge and a threaded edge, and the tail end is provided with a circle, a square, a triangle and a flat shape.

However, in the prior art, the conventional bone nail is usually fixed, the top of the bone nail is octagonal, the screw thread part of the bone nail cannot be replaced in the implantation process, the rotated screw thread part is worn, and meanwhile, when the bone nail is twisted, the edge of the top of the bone nail is worn, even the bone nail may slip, so that resources are wasted when the whole bone nail is replaced.

Therefore, there is a need to provide a new medical bone nail to solve the above technical problems.

Disclosure of Invention

The invention solves the technical problem of providing a medical bone nail which is convenient to use, can independently replace a connecting piece on the bone nail according to needs, saves resources and is simple and convenient to operate.

In order to solve the above technical problems, the present invention provides a medical bone nail comprising: an octagonal connecting rod; the octagonal nut is sleeved on the octagonal connecting rod in a sliding manner; the circular connecting rod is fixedly arranged at the top end of the octagonal connecting rod; the round nut is sleeved on the round connecting rod in a threaded manner; the first round rod is fixedly arranged on the octagonal connecting rod; the first through hole is formed in the bottom end of the first round rod; the spiral connecting piece is slidably arranged in the first through hole, and the bottom end of the spiral connecting piece extends out of the first through hole; the second round rod is slidably mounted in the first through hole, and the top end of the second round rod is fixedly connected with the bottom end of the octagonal connecting rod; the first groove is formed in the bottom end of the second round rod; the third round rod is slidably mounted in the first groove, and the bottom end of the third round rod extends out of the first groove; the first annular groove is formed in the inner wall of the first through hole; the circular rotating plate is slidably mounted in the first annular groove, and the bottom end of the third round rod is fixedly connected with the top of the circular rotating plate; the first spring is slidably sleeved on the third round rod, the top end of the first spring is fixedly connected with the bottom end of the second round rod, and the bottom end of the first spring is fixedly connected with the top of the circular rotating plate.

Preferably, a second annular groove is formed in the inner wall of the first groove, two sliding rods are slidably mounted in the second annular groove, and one ends, close to each other, of the two sliding rods are fixedly connected with the third round rod.

Preferably, a second groove is formed in one side of the first round rod, a second through hole is formed in the inner wall, close to the spiral connecting piece, of one side of the second groove, a third through hole is formed in the spiral connecting piece, and the same screw is arranged in the third through hole and the second groove.

Preferably, an inner thread is formed on the inner wall of the second through hole, an outer thread is formed on the screw, and the second through hole is in threaded connection with the screw.

Preferably, a clamping groove is formed in the inner wall of one side of the first through hole and is in sliding connection with the screw.

Preferably, the stiffness coefficient of the first spring is in a range of 5N/m to 40N/m.

Preferably, a fourth through hole is formed in the top of the octagonal nut and is in sliding connection with the octagonal connecting rod.

Preferably, a fifth through hole is formed in the top of the circular nut, an internal thread is formed in the inner wall of the fifth through hole, an external thread is formed on the circular connecting rod, and the circular connecting rod is in threaded connection with the fifth through hole.

Preferably, the ends, far away from each other, of the two sliding rods are nested with first balls, and the two first balls are in contact with the inner wall of the second annular groove.

Preferably, a second ball is nested on the circular rotating plate and is fixedly connected with the inner wall of the first annular groove.

Compared with the related art, the medical bone nail provided by the invention has the following beneficial effects:

the invention provides a medical bone nail which can be replaced under the condition that an octagonal nut is worn or slips as required under the mutual matching of a circular connecting rod and a circular nut, and can effectively replace a spiral connecting piece through the mutual matching of a circular rotating plate, a first spring, a third circular rod and a screw, so that the whole bone nail is prevented from being replaced when rusting or other problems occur, and resources are saved.

Drawings

FIG. 1 is a schematic cross-sectional front view of a preferred embodiment of a medical bone screw according to the present invention;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is an assembly view of an octagonal connecting rod and a round connecting rod of the present invention;

FIG. 4 is a schematic top view of the octagonal nut of the present invention;

fig. 5 is a schematic top view of the circular rotating plate according to the present invention.

Reference numbers in the figures: 1. octagonal connecting rod, 2, octagonal nut, 3, round connecting rod, 4, round nut, 5, first round bar, 6, first through hole, 7, spiral connecting piece, 8, second round bar, 9, first recess, 10, third round bar, 11, first annular groove, 12, circular rotor plate, 13, first spring, 14, second annular groove, 15, slide bar, 16, second recess, 17, screw, 18, third through hole, 19, draw-in groove, 20, fourth through hole.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Please refer to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5 in combination, wherein fig. 1 is a schematic front sectional view illustrating a preferred embodiment of a medical bone screw according to the present invention; FIG. 2 is an enlarged schematic view of portion A of FIG. 1; FIG. 3 is an assembly view of an octagonal connecting rod and a round connecting rod of the present invention; FIG. 4 is a schematic top view of the octagonal nut of the present invention; fig. 5 is a schematic top view of the circular rotating plate according to the present invention. The medical bone nail comprises: an octagonal connecting rod 1; the octagonal nut 2 is sleeved on the octagonal connecting rod 1 in a sliding manner; the round connecting rod 3 is fixedly arranged at the top end of the octagonal connecting rod 1; the round nut 4 is sleeved on the round connecting rod 3 in a threaded manner; the first round rod 5 is fixedly arranged on the octagonal connecting rod 1; the first through hole 6 is formed in the bottom end of the first round rod 5; the spiral connecting piece 7 is installed in the first through hole 6 in a sliding mode, and the bottom end of the spiral connecting piece 7 extends out of the first through hole 6; the second round rod 8 is slidably mounted in the first through hole 6, and the top end of the second round rod 8 is fixedly connected with the bottom end of the octagonal connecting rod 1; the first groove 9 is formed in the bottom end of the second round rod 8, and the first groove 9 is formed in the bottom end of the second round rod 8; the third round rod 10 is slidably mounted in the first groove 9, and the bottom end of the third round rod 10 extends out of the first groove 9; the first annular groove 11 is formed in the inner wall of the first through hole 6, and the first annular groove 11 is formed in the inner wall of the first through hole; the circular rotating plate 12 is slidably mounted in the first annular groove 11, and the bottom end of the third round rod 10 is fixedly connected with the top of the circular rotating plate 12; the first spring 13 is sleeved on the third round rod 10 in a sliding mode, the top end of the first spring 13 is fixedly connected with the bottom end of the second round rod 8, and the bottom end of the first spring 13 is fixedly connected with the top of the circular rotating plate 12.

A second annular groove 14 is formed in the inner wall of the first groove 9, two sliding rods 15 are slidably mounted in the second annular groove 14, and one ends, close to each other, of the two sliding rods 15 are fixedly connected with the third round rod 10.

A second groove 16 is formed in one side of the first round rod 5, a second through hole is formed in the inner wall, close to the spiral connecting piece 7, of one side of the second groove 16, a third through hole 18 is formed in the spiral connecting piece 7, and the same screw 17 is arranged in the third through hole 18 and the second groove 16.

The inner wall of the second through hole is provided with an internal thread, the screw 17 is provided with an external thread, and the second through hole is in threaded connection with the screw 17.

A clamping groove 19 is formed in the inner wall of one side of the first through hole 6, and the clamping groove 19 is connected with the screw 17 in a sliding mode.

The stiffness coefficient of the first spring 13 ranges from 5N/m to 40N/m.

A fourth through hole 20 is opened at the top of the octagonal nut 2, and the fourth through hole 20 is slidably connected with the octagonal connecting rod 1.

A fifth through hole is formed in the top of the circular nut 4, an internal thread is formed in the inner wall of the fifth through hole, an external thread is formed in the circular connecting rod 3, and the circular connecting rod 3 is in threaded connection with the fifth through hole.

The one end that two slide bars kept away from each other all nestedly has first ball, and two first balls all contact with the inner wall of second annular groove 14.

And a second ball is nested on the circular rotating plate 12 and is fixedly connected with the inner wall of the first annular groove 11.

The working principle of the medical bone nail provided by the invention is as follows:

the first step is as follows: when the octagonal nut 2 is replaced according to the requirement, the round nut 4 is directly rotated, and the round nut 4 is taken down from the round connecting rod 3 under the action of the threads;

the second step is as follows: then the octagonal nut 2 is directly taken down from the octagonal connecting rod 1, so that the octagonal nut 2 can be replaced conveniently when the edge of the octagonal nut 2 is worn;

the third step: when the spiral connecting piece 7 needs to be replaced, the spiral connecting piece 7 is firstly plugged into the first through hole 6, at the moment, the spiral connecting piece 7 can be contacted with the circular rotating plate 12, and the circular rotating plate 12 drives the third round rod 10 to slide in the first groove 9;

the fourth step: when the circular rotating plate 12 moves upwards and drives the first spring 13 to move, at this time, the first spring 13 is compressed to generate elastic force, and when the clamping groove 19 and the third through hole 18 are positioned on a horizontal line, the first spring is directly fixed by using the screw 17;

the fifth step: in the same way, the bone nail can also be disassembled, thereby finishing the replacement work of the bone nail.

Compared with the related art, the medical bone nail provided by the invention has the following beneficial effects:

the invention provides a medical bone nail, which can be replaced under the condition that an octagonal nut 2 is worn or slips as required under the mutual matching of a round connecting rod 3 and a round nut 4, and can effectively replace a spiral connecting piece 7 through the mutual matching of a round rotating plate 12, a first spring 13, a third round rod 10 and a screw 17, so that the whole bone nail is prevented from being replaced when rusting or other problems occur, and resources are saved.

It should be noted that the device structure and the accompanying drawings of the present invention mainly describe the principle of the present invention, and in the technology of the design principle, the arrangement of the power mechanism, the power supply system, the control system, and the like of the device is not completely described, but the details of the power mechanism, the power supply system, and the control system can be clearly known by those skilled in the art on the premise that the above inventive principle is understood.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.