CN210019592U

CN210019592U - Humerus intramedullary nail with lock

Info

Publication number: CN210019592U
Application number: CN201920165663.7U
Authority: CN
Inventors: 张宝龙; 张宝顺
Original assignee: Beijing Bei Sida Bioisystech Co Ltd
Current assignee: Beijing Bei Sida Bioisystech Co Ltd
Priority date: 2019-01-30
Filing date: 2019-01-30
Publication date: 2020-02-07
Anticipated expiration: 2029-01-30

Abstract

The utility model discloses a humerus interlocking intramedullary nail, which comprises a nail near end, a nail middle end and a nail far end, wherein the end part of the nail near end is provided with a nail cover clamping groove, a nail cover is connected in the nail cover clamping groove in a clamping way, a near end jack is arranged on the nail near end, a first far end perforation and a second far end perforation are arranged on the nail far end, the side wall of the nail far end is provided with a positioning table, the nail near end and the nail far end are detachably arranged at two ends of the nail middle end, two end parts of the nail middle end are provided with threaded holes along the axial direction, two symmetrical second connecting grooves are arranged on the outer walls of the two ends of the nail middle end, a threaded rod is fixedly arranged at the end parts of the nail near end and the nail far end, the threaded rod is matched with the threaded holes, the first connecting grooves matched with the second connecting grooves are arranged on the side walls of the nail near end and the, and the assembly is convenient, the firmness is strong, and the postoperative recovery is facilitated.

Description

Humerus intramedullary nail with lock

Technical Field

The utility model relates to the field of medical equipment, in particular to a humerus interlocking intramedullary nail.

Background

The humerus (humulus) is the thickest bone of the upper limb, the upper end forms a shoulder joint with a scapula, the lower end forms an elbow joint with a radius and an ulna, a humeral interlocking intramedullary nail is frequently used in humeral reduction surgery, the intramedullary nail is a relatively common intramedullary fixing device, compared with other extramedullary fixing devices, the intramedullary fixing device has the advantages of high strength, small wound and healing blocks, the intramedullary nail is ideal for reduction and fixation of fracture, the intramedullary nail is a relatively common means for treating fracture, the intramedullary nail is guided and inserted into the intramedullary nail through an opening at the bone end, the intramedullary nail is used for reduction and fixation of fractured bones along the physiological curvature of the medullary cavity in the medullary cavity, and the radian of the far end of the current intramedullary nail basically accords with the physiological curvature of most Asians.

However, there are still obvious defects, such as the degree of matching between the physiological curvature and different patients is different, and compared with the fixed position of the intramedullary nail in the medullary cavity, the difference is larger, which causes the phenomenon of displacement of the fracture healing, and has a larger influence on the normal life of the patient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a humerus interlocking intramedullary nail to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a humerus interlocking intramedullary nail comprises a nail near end, a nail middle end and a nail far end, wherein a nail cover clamping groove is formed in the end portion of the nail near end, a nail cover is connected in the nail cover clamping groove in a clamping mode, a near end inserting hole is formed in the nail near end, a first far end penetrating hole and a second far end penetrating hole are formed in the nail far end, a positioning table is arranged on the side wall of the nail far end, the nail near end and the nail far end are detachably mounted at two ends of the nail middle end, threaded holes are formed in two end portions of the nail middle end along the axial direction of the nail middle end, two symmetrical second connecting grooves are formed in the outer walls of the two ends of the nail middle end, a threaded rod is fixedly mounted at the end portions of the nail near end and the nail far end, the threaded rod is matched with the threaded holes, first connecting grooves matched with the second connecting grooves are formed in the side walls of the nail near end and the nail far end, the first connecting grooves and the second connecting grooves can be matched, the buckle plate is matched with the integrated buckle groove

As a further aspect of the present invention: the number of the near-end jacks is four, and the near-end jacks are arranged in a staggered mode.

As a further aspect of the present invention: the first distal end through hole is an inclined through hole.

As a further aspect of the present invention: the positioning stage is located between the first distal aperture and the second distal aperture.

As a further aspect of the present invention: the second spread groove is internally provided with a clamping groove, the outer wall of the pinch plate is matched with the outer wall of the middle end of the nail, the inner side wall of the pinch plate is fixedly provided with a clamping connector, and the clamping connector is matched with the clamping groove.

As a further aspect of the present invention: the middle end of the nail has various length specifications.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses simple structure, high durability and convenient use, the nail near-end, nail middle-end and nail distal end adopt demountable installation, the nail middle-end has multiple length specification, thereby can carry out the selection of length according to upper arm bone length, improve the practicality of intramedullary nail, during the equipment, earlier through the threaded rod with nail near-end and nail distal end threaded connection at the both ends of nail middle-end, make first connecting groove and second connecting groove inosculate and become one-piece catching groove after screwing up, detain the integral type catching groove through the buckle in, thereby accomplish the equipment of intramedullary nail, joint head and joint groove joint, thereby avoid the buckle not hard up, improve the equipment fastness, improve the postoperative effect.

Drawings

Fig. 1 is a schematic structural view of a humeral locked intramedullary nail.

Fig. 2 is a side view of a humeral locked intramedullary nail.

Fig. 3 is a cross-sectional view of the middle end of the humeral locked intramedullary nail.

Fig. 4 is a schematic view of the installation of the humeral locked intramedullary nail.

In the figure: the nail cover comprises a nail cover 1, a nail near end 2, a buckle plate 3, a nail middle end 4, a first far end through hole 5, a second far end through hole 6, a nail far end 7, a nail cover clamping groove 8, a near end insertion hole 9, a positioning table 10, a first connecting groove 11, a threaded rod 12, a second connecting groove 13, a clamping joint 14, a threaded hole 15 and a clamping groove 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, in an embodiment of the present invention, a humerus interlocking intramedullary nail includes a proximal nail end 2, a middle nail end 4, and a distal nail end 7, a nail cover slot 8 is formed at an end of the proximal nail end 2, a nail cover 1 is clamped in the nail cover slot 8, proximal insertion holes 9 are formed in the proximal nail end 2, the number of the proximal insertion holes 9 is four, the proximal insertion holes 9 are arranged in a staggered manner, first distal through holes 5 and second distal through holes 6 are formed in the distal nail end 7, and the first distal through holes 5 are oblique through holes; a positioning table 10 is arranged on the side wall of the nail distal end 7, and the positioning table 10 is positioned between the first distal end through hole 5 and the second distal end through hole 6; the nail near end 2 and the nail far end 7 are detachably mounted at two ends of the nail middle end 4, threaded holes 15 are formed in two end portions of the nail middle end 4 along the axial direction of the two end portions, two symmetrical second connecting grooves 13 are formed in the outer walls of the two ends of the nail middle end 4, a threaded rod 12 is fixedly mounted at the end portions of the nail near end 2 and the nail far end 7, the threaded rod 12 is matched with the threaded holes 15, first connecting grooves 11 matched with the second connecting grooves 13 are formed in the side walls of the end portions of the nail near end 2 and the nail far end 7, the first connecting grooves 11 and the second connecting grooves 13 can be matched to form an integrated catching groove, a buckling plate 3 is hinged in the first connecting grooves 11, an arc-shaped chamfer providing a rotating space for the buckling plate 3 is arranged at one end of the first connecting grooves; a clamping groove 16 is formed in the second connecting groove 13, the outer wall of the buckling plate 3 is matched with the outer wall of the nail middle end 4, a clamping joint 14 is fixedly installed on the inner side wall of the buckling plate 3, and the clamping joint 14 is matched with the clamping groove 16; the middle nail end 4 has various length specifications; during the use, nail near-end 2, nail middle-end 4 adopts demountable installation with nail distal end 7, nail middle-end 4 has multiple length specification, thereby can carry out the selection of length according to upper arm bone length, the practicality of intramedullary nail is improved, during the equipment, earlier through threaded rod 12 with nail near-end 2 and the both ends of nail distal end 7 threaded connection at nail middle-end 4, make first connecting groove 11 and the identical and integral type catching groove that links into of second connecting groove 13 after screwing up, detain the integral type catching groove in through buckle 3, thereby accomplish the equipment of intramedullary nail,

joint

14 and 16 joints in the joint groove, thereby avoid buckle 3 not hard up, improve the equipment fastness, improve the postoperative effect.

The utility model discloses a theory of operation is:

during the use, according to the needs mentioned the length specification of selecting nail middle-end 4 and assembling nail near-end 2, nail middle-end 4 and nail distal end 7, earlier through threaded rod 12 with nail near-end 2 and nail distal end 7 threaded connection at the both ends of nail middle-end 4, make first connecting groove 11 coincide with second connecting groove 13 and connect into the integral type catching groove after screwing up, detain into the integral type catching groove through buckle 3 to accomplish the equipment of intramedullary nail.

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. A humerus locked intramedullary nail, includes nail near-end (2), nail middle-end (4) and nail distal end (7), its characterized in that: the end part of the nail near end (2) is provided with a nail cover clamping groove (8), a nail cover (1) is clamped in the nail cover clamping groove (8), a near end jack (9) is arranged on the nail near end (2), a first far end perforation (5) and a second far end perforation (6) are arranged on the nail far end (7), the side wall of the nail far end (7) is provided with a positioning table (10), the nail near end (2) and the nail far end (7) are detachably arranged at two ends of the nail middle end (4), two threaded holes (15) are arranged at two end parts of the nail middle end (4) along the axial direction of the nail near end, two symmetrical second connecting grooves (13) are arranged on the outer walls of two ends of the nail middle end (4), a threaded rod (12) is fixedly arranged at the end parts of the nail near end (2) and the nail far end (7), the threaded rod (12) is matched with the threaded hole (15), first connecting grooves (11) matched with the second connecting grooves (13) are arranged on the end side walls of the nail, first spread groove (11) and second spread groove (13) can cooperate and form the integral type catching groove, and articulated in first spread groove (11) have buckle (3), and the one end of first spread groove (11) is equipped with the arc chamfer that provides rotation space for buckle (3), buckle (3) and integral type catching groove phase-match.

2. The humeral locked intramedullary nail of claim 1, wherein: the number of the near-end jacks (9) is four, and the near-end jacks (9) are arranged in a staggered mode.

3. The humeral locked intramedullary nail of claim 1, wherein: the first distal end through hole (5) is an inclined through hole.

4. The humeral locked intramedullary nail of claim 1, wherein: the positioning table (10) is located between the first distal end perforation (5) and the second distal end perforation (6).

5. The humeral locked intramedullary nail of any one of claims 1-4, wherein: a clamping groove (16) is formed in the second connecting groove (13), the outer wall of the buckling plate (3) is matched with the outer wall of the nail middle end (4), a clamping connector (14) is fixedly mounted on the inner side wall of the buckling plate (3), and the clamping connector (14) is matched with the clamping groove (16).

6. The humeral locked intramedullary nail of claim 5, wherein: the middle nail end (4) has various length specifications.