CN110604611A

CN110604611A - Humerus intramedullary nail

Info

Publication number: CN110604611A
Application number: CN201910869551.4A
Authority: CN
Inventors: 付中国; 吴晓明; 东靖明; 向明; 庄澄宇; 梁文魁; 徐恩海
Original assignee: Shanghai Alberta Medical Devices Co
Current assignee: Shanghai Alberta Medical Devices Co
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2019-12-24

Abstract

The invention discloses a humerus intramedullary nail, which comprises a main humerus intramedullary nail, wherein the main humerus intramedullary nail is of a hollow structure and comprises a near-end intramedullary nail, a far-end intramedullary nail and a connecting section, the diameter of the near-end intramedullary nail is larger than that of the far-end intramedullary nail, one end of the near-end intramedullary nail and the far-end intramedullary nail are in smooth transition connection through the connecting section, a terminal cap is connected to the other end of the near-end intramedullary nail, the far-end intramedullary nail and the connecting section are of an integrated structure, the diameter of the near-end intramedullary nail is 9mm, a plurality of nail holes are formed in the near-end intramedullary nail and the far-end intramedullary nail. The invention can select the proper main nail of the humerus intramedullary nail according to the diameter of the humerus head, the length of the humerus shaft and the volume of the medullary cavity, thereby reducing the operation risk caused by the larger opening of the humerus head.

Description

Humerus intramedullary nail

Technical Field

The invention relates to the field of humerus bone nail instruments, in particular to a humerus intramedullary nail.

Background

According to the comparison of a large amount of clinical data, the diameter of the humeral head, the length of the humeral shaft and the volume of the medullary cavity of a patient with a short stature are smaller and shorter than those of normal people. When using normal intramedullary nails, the larger diameter, especially the proximal diameter, often creates surgical risks due to the larger opening of the humeral head portion.

Disclosure of Invention

The invention aims to provide a humeral intramedullary nail, which aims to solve the problem that when a normal-type intramedullary nail is used, the diameter is larger, particularly the proximal diameter, the problem that the opening of the humeral head part is larger to cause operation risks is solved. In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a humerus intramedullary nail, includes humerus intramedullary nail main nail, humerus intramedullary nail main nail is hollow structure, humerus intramedullary nail main nail includes near-end intramedullary nail, distal end intramedullary nail and linkage segment, near-end intramedullary nail diameter is greater than distal end intramedullary nail diameter, carry out smooth transition through the linkage segment between near-end intramedullary nail one end and the distal end intramedullary nail and connect, near-end intramedullary nail other end internal connection terminal cap, near-end intramedullary nail, distal end intramedullary nail and linkage segment structure as an organic whole, near-end intramedullary nail diameter is 9mm, near-end intramedullary nail and distal end intramedullary nail are opened there are a plurality of nail holes, the inside bone nail that is equipped with the correspondence in nail hole.

Preferably, the length of the main nail of the humerus intramedullary nail is provided with two specifications of 130mm and 150mm, and the diameter of the side, connected with the connecting section, of the distal intramedullary nail of the main nail of the humerus intramedullary nail is provided with two specifications of 6mm and 7 mm.

Preferably, the end cap length gauge is 0mm, 5mm, 10mm and 15 mm.

Preferably, the nail hole of near-end intramedullary nail divide into No. 3 nail holes, No. 4 nail holes, No. 1 nail hole and No. 2 nail holes by last to down according to the position, the bone nail correspondence is divided into No. 3 bone nail, No. 4 bone nail, No. 1 bone nail and No. 2 bone nail, divide into No. 6 nail holes and No. 7 nail holes by last to down on the nail hole of distal end intramedullary nail 1, the bone nail correspondence is divided into No. 6 bone nail and No. 7 bone nail.

Preferably, threaded connection between No. 4 nail hole and No. 4 bone nail, between No. 1 nail hole and No. 1 bone nail can effectively prevent to move back the nail, be equipped with the packing ring between No. 4 nail hole and No. 4 bone nail, between No. 1 nail hole and No. 1 bone nail, the packing ring divide into circular packing ring and eccentric packing ring.

Preferably, it has No. 5 nail holes to open on the proximal end intramedullary nail of 150mm specification's humerus intramedullary nail main nail, No. 5 nail hole internal thread connects No. 5 bone nails, No. 5 bone nails is distal end locking nail, is 45 contained angles with humerus intramedullary nail main nail, No. 5 nail hole is located No. 2 nail hole downside.

Preferably, No. 1 bone nail is the tuberosity staple, No. 2 bone nails is the other staple of groove between the tuberosity, and angle of adjustment is 10 about can, No. 3 bone nails is tuberosity top staple, and adjustable angle is 0 °, 5 ° and 10 °, No. 4 bone nails is tuberosity outside staple, No. 6 bone nails and No. 7 bone nails are distal end locking nail, No. 7 nail holes are the sliding hole.

Preferably, No. 1 bone nail and No. 3 bone nail contained angle are 90, and No. 2 bone nail and No. 4 bone nail are 25 for No. 3 bone nail contained angles, and the contained angle is 10 between No. 6 bone nail and the No. 7 bone nail.

Preferably, the head structure of the bone nail is divided into a common sharp head and a blunt head, and the cap structure of the bone nail is divided into a nail-in-nail form, a common round head form and a round head belt nail hole form.

The invention has the technical effects and advantages that: the invention can select the proper main nail of the humerus intramedullary nail according to the diameter of the humerus head, the length of the humerus shaft and the volume of the medullary cavity, thereby reducing the operation risk caused by the larger opening of the humerus head.

Drawings

Fig. 1 is a schematic structural view of a 130mm long main nail of an intramedullary nail of the humerus of the present invention;

fig. 2 is a schematic structural view of the humerus intramedullary nail main nail of 150mm length specification;

fig. 3 is a schematic structural view of a 130mm long humeral intramedullary nail main nail according to the present invention;

FIG. 4 is a schematic view of the threaded connection between the No. 4 nail hole and the No. 4 bone nail according to the present invention.

In the figure: the nail comprises a main nail of a humerus intramedullary nail, a terminal cap, a 3-nail hole, a 4-bone nail, a 11-proximal intramedullary nail, a 12-distal intramedullary nail, a 13-connecting section, a 31-3 nail hole, a 32-4 nail hole, a 33-1 nail hole, a 34-2 nail hole, a 35-6 nail hole, a 36-7 nail hole, a 37-5 nail hole, a 41-3 bone nail, a 42-4 bone nail, a 43-1 bone nail, a 44-2 bone nail, a 45-6 bone nail, a 46-7 bone nail and a 47-5 bone nail.

Detailed Description

In the description of the present invention, it should be noted that unless otherwise specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

Example 1

The humerus intramedullary nail comprises a main humerus intramedullary nail 1, wherein the main humerus intramedullary nail 1 is of a hollow structure, the main humerus intramedullary nail 1 comprises a proximal intramedullary nail 11, a distal intramedullary nail 12 and a connecting section 13, the diameter of the proximal intramedullary nail 11 is larger than that of the distal intramedullary nail 12, one end of the proximal intramedullary nail 12 is in smooth transition connection with the distal intramedullary nail 11 through the connecting section 13, the other end of the proximal intramedullary nail 11 is connected with a terminal cap 2, the proximal intramedullary nail 11, the distal intramedullary nail 12 and the connecting section 13 are of an integrated structure, the diameter of the proximal intramedullary nail 11 is 9mm, a plurality of nail holes 3 are formed in the proximal intramedullary nail 12 and the distal intramedullary nail 12, and corresponding bone nails 4 are arranged inside the nail holes 3.

Example 2

The humerus intramedullary nail shown in fig. 1 to 4 comprises a main humerus intramedullary nail 1, wherein the main humerus intramedullary nail 1 is of a hollow structure, the main humerus intramedullary nail 1 comprises a proximal intramedullary nail 11, a distal intramedullary nail 12 and a connecting section 13, the diameter of the proximal intramedullary nail 11 is larger than that of the distal intramedullary nail 12, one end of the proximal intramedullary nail 12 is in smooth transition connection with the distal intramedullary nail 11 through the connecting section 13, the other end of the proximal intramedullary nail 11 is internally connected with a terminal cap 2, the proximal intramedullary nail 11, the distal intramedullary nail 12 and the connecting section 13 are of an integrated structure, the diameter of the proximal intramedullary nail 11 is 9mm, a plurality of nail holes 3 are formed in the proximal intramedullary nail 12 and the distal intramedullary nail 12, and corresponding bone nails 4 are arranged in the nail holes 3.

Preferably, the length of the humerus intramedullary nail main nail 1 is provided with two specifications of 130mm and 150mm, and the diameter of the side, connected with the connecting section 13, of the distal intramedullary nail 12 of the humerus intramedullary nail main nail 1 is provided with two specifications of 6mm and 7 mm.

Preferably, the terminal cap 2 has a length specification of 0mm, 5mm, 10mm and 15 mm.

Preferably, the nail holes 3 of the proximal intramedullary nail 11 are divided into No. 3 nail holes 31, No. 4 nail holes 32, No. 1 nail holes 33 and No. 2 nail holes 34 from top to bottom according to positions, the bone nails 4 are correspondingly divided into No. 3 bone nails 41, No. 4 bone nails 42, No. 1 bone nails 43 and No. 2 bone nails 44, the nail holes 3 of the distal intramedullary nail 121 are divided into No. 6 nail holes 35 and No. 7 nail holes 36 from top to bottom, and the bone nails are correspondingly divided into No. 6 bone nails 45 and No. 7 bone nails 46.

Preferably, threaded connection between 4 No. nail hole 32 and 4 bone nail 42, between 1 No. nail hole 33 and 1 No. bone nail 43 can effectively prevent to move back the nail, be equipped with packing ring 5 between nail hole 32 and 4 bone nail 42, between 1 No. nail hole 33 and 1 No. bone nail 43, packing ring 5 divide into circular packing ring and eccentric packing ring, and packing ring 5 can fix the suture to do benefit to the suture of later stage ligament and bone piece, both saved space, again can effective fixed distribution stylolite.

Preferably, the proximal intramedullary nail 11 of the humeral intramedullary nail main nail 1 with the specification of 150mm is provided with a No. 5 nail hole 37, the No. 5 nail hole 37 is internally connected with a No. 5 bone nail 47 through threads, the No. 5 bone nail 47 is a distal locking nail and forms an included angle of 45 degrees with the humeral intramedullary nail main nail 1, and the No. 5 nail hole 37 is located on the lower side of the No. 2 nail hole 34.

Preferably, No. 1 bone nail 43 is the tuberosity staple, No. 2 bone nail 44 is the other staple of groove between the tuberosity, and angle of adjustment is 10 about can, No. 3 bone nail 41 is tuberosity top staple, and adjustable angle is 0 °, 5 and 10, and No. 2 bone nail 44 and No. 3 bone nail 41 all design into angle of adjustment, according to actual fracture type and fracture line position, can suitably adjust into the nail angle to reach best fixed effect, No. 4 bone nail 42 is tuberosity outside staple, No. 6 bone nail 45 and No. 7 bone nail 46 are distal end locking nail, No. 7 nail hole is the sliding hole.

Preferably, No. 1 bone nail and No. 3 bone nail contained angle are 90, and No. 2 bone nail and No. 4 bone nail are 25 for No. 3 bone nail contained angles, and the contained angle is 10 between No. 6 bone nail and No. 7 bone nail, according to a large amount of data research, when the contained angle is 10, can guarantee effective locking effect, can avoid hindering near blood vessel and nerve as far as possible again.

Preferably, the head structure of the bone nail 4 is divided into a common sharp head and a blunt head, and the cap structure of the bone nail 4 is divided into a nail-in-nail form, a common round head form and a round head belt nail hole form.

The process flow and the working principle of the invention are as follows: according to the diameter of a humeral head of a patient, the length of the humeral shaft and the volume of a medullary cavity, a proper main humeral nail 1 is selected, a No. 5 nail hole 37 and a No. 5 nail 47 are arranged on the main humeral nail 1 with the specification of 150mm relative to the main humeral nail 1 with the specification of 130mm, a proper bone nail 4 form is selected after the main humeral nail 1 is implanted into marrow, mainly the head structure and the nut structure of the bone nail 4, and the bone nail is installed in the corresponding nail hole 3 to fix the main humeral nail 1.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a humerus intramedullary nail, includes humerus intramedullary nail main nail which characterized in that: the humerus intramedullary nail main nail is hollow structure, humerus intramedullary nail main nail includes near-end intramedullary nail, distal end intramedullary nail and linkage segment, near-end intramedullary nail diameter is greater than distal end intramedullary nail diameter, carry out smooth transition through the linkage segment between near-end intramedullary nail one end and the distal end intramedullary nail and connect, near-end intramedullary nail other end internal connection terminal cap, near-end intramedullary nail, distal end intramedullary nail and linkage segment structure as an organic whole, near-end intramedullary nail diameter is 9mm, near-end intramedullary nail and distal end intramedullary nail are opened there are a plurality of nail holes, the inside bone nail that is equipped with the correspondence of nail hole.

2. The humeral intramedullary nail of claim 1, wherein: the length of the humerus intramedullary nail main nail is provided with two specifications of 130mm and 150mm, and the diameter of the side, connected with the connecting section, of the far-end intramedullary nail of the humerus intramedullary nail main nail is provided with two specifications of 6mm and 7 mm.

3. The humeral intramedullary nail of claim 1, wherein: the length specifications of the terminal cap are 0mm, 5mm, 10mm and 15 mm.

4. The humeral intramedullary nail of claim 1, wherein: the nail hole of near-end intramedullary nail divide into No. 3 nail holes, No. 4 nail holes, No. 1 nail hole and No. 2 nail holes by last to down according to the position, the bone nail correspondence is divided into No. 3 bone nails, No. 4 bone nails, No. 1 bone nail and No. 2 bone nails, divide into No. 6 nail holes and No. 7 nail holes by last to down on the nail hole of distal end intramedullary nail 1, the bone nail correspondence is divided into No. 6 bone nails and No. 7 bone nails.

5. A humeral intramedullary nail according to claim 1 or 3, wherein: threaded connection between No. 4 nail hole and No. 4 bone nail, between No. 1 nail hole and No. 1 bone nail can effectively prevent to move back the nail, be equipped with the packing ring between No. 4 nail hole and No. 4 bone nail, between No. 1 nail hole and No. 1 bone nail, the packing ring divide into circular packing ring and eccentric packing ring.

6. The humeral intramedullary nail of claim 2, wherein: open No. 5 nail holes on the proximal end intramedullary nail of the humerus intramedullary nail main nail of 150mm specification, No. 5 nail hole internal thread connects No. 5 bone nails, No. 5 bone nails is distal end locking nail, is 45 contained angles with humerus intramedullary nail main nail, No. 5 nail hole is located No. 2 nail hole downside.

7. The humeral intramedullary nail of claim 4, wherein: no. 1 bone nail is the tuberosity staple, No. 2 bone nail is the other staple of groove between the tuberosity, and angle of adjustment is 10 about can, No. 3 bone nail is tuberosity top staple, and angle of adjustment is 0, 5 and 10, No. 4 bone nail is tuberosity outside staple, No. 6 bone nail and No. 7 bone nail are distal end locking nail, No. 7 nail hole is the sliding hole.

8. The humeral intramedullary nail of claim 4, wherein: no. 1 bone nail and No. 3 bone nail contained angle are 90, and No. 2 bone nail and No. 4 bone nail are 25 for No. 3 bone nail contained angle, and the contained angle is 10 between No. 6 bone nail and the No. 7 bone nail.

9. The humeral intramedullary nail of claim 1, wherein: the head structure of the bone nail is divided into a common sharp head and a blunt head, and the head structure of the bone nail is divided into a middle nail form, a common round head form and a round head with nail holes.