CN217244741U

CN217244741U - Anti-infection intramedullary nail

Info

Publication number: CN217244741U
Application number: CN202123345350.6U
Authority: CN
Inventors: 张世浩; 桑宏勋; 王姣丽; 李敏
Original assignee: Shenzhen Hospital of Southern Medical University
Current assignee: Shenzhen Hospital of Southern Medical University
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-08-23
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses an anti-infection intramedullary nail, including the intramedullary nail body, intramedullary nail body upper end interlude swing joint has the bone cement pipe, bone cement pipe upper end interlude swing joint has the bone cement push rod, intramedullary nail body surface middle part is opened there is a plurality of antibiotic release hole, a plurality of locking hole has all been opened to intramedullary nail body surface upper portion and surface lower part, intramedullary nail body surface upper portion is provided with aiming device, aiming device is located locking hole upper portion, the equal fixedly connected with pull ring in bone cement pipe surface left part and surface right part, bone cement push rod upper end fixedly connected with push pedal, aiming device includes the locating rack, locating rack left end fixedly connected with fixed sleeve, fixed sleeve surface left part threaded connection has fastening screw. The anti-infection intramedullary nail of the utility model has high positioning efficiency, good anti-infection effect and high stability, and is suitable for the use of orthopedic surgery.

Description

Anti-infection intramedullary nail

Technical Field

The utility model relates to the technical field of intramedullary nails, in particular to an anti-infection intramedullary nail.

Background

Intramedullary nails belong to orthopedic internal fixation instruments in medical instruments. The structure is provided with an intramedullary nail rod, a near-end locking screw hole is arranged at the near end of the intramedullary nail rod, and a pressure reduction plane is arranged on the surface of the intramedullary nail rod. More than one strip-shaped decompression plane is arranged on the surface of the intramedullary nail rod, and the decompression plane can extend from the proximal end of the intramedullary nail rod to the distal end of the intramedullary nail rod. The proximal end of the intramedullary nail rod is provided with a locking screw rod positioning screw hole and a connecting sleeve positioning groove, and the prior intramedullary nail has at least the following disadvantages in the using process: 1. the existing intramedullary nail can not carry anti-infective drugs, can not play an anti-infective role to osteomyelitis and local infection patients, and even can not play an internal fixation role when the intramedullary nail needs to be taken out once infection occurs; 2. the existing intramedullary nail is inconvenient to aim, so that the operation difficulty is increased, and an anti-infection intramedullary nail is provided.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide an anti-infection intramedullary nail which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

the utility model provides an anti-infection intramedullary nail, includes the intramedullary nail body, intramedullary nail body upper end interlude swing joint has the bone cement pipe, bone cement pipe upper end interlude swing joint has the bone cement push rod, intramedullary nail body surface middle part is opened there is a plurality of antibiotic release hole, intramedullary nail body surface upper portion and surface lower part have all been opened a plurality of locking hole, intramedullary nail body surface upper portion is provided with aiming device, aiming device is located locking hole upper portion, the equal fixedly connected with pull ring of bone cement pipe surface left part and surface right part, bone cement push rod upper end fixedly connected with push pedal.

Preferably, the sighting device includes the locating rack, locating rack left end fixedly connected with fixed sleeve, fixed sleeve surface left part threaded connection has fastening screw, the locating rack upper end right part has adjusting screw through bearing swing joint, the locating rack front end is opened there is T type groove, sliding connection has T type piece in the T type groove, T type piece front end fixedly connected with guide bar, the guide bar right-hand member is opened has communicating guiding hole about a plurality of.

Preferably, the right end of the fastening screw rod is movably connected with a clamping plate through a rotating shaft, the clamping plate is of an arc-shaped structure and is located in a fixing sleeve, the fixing sleeve is sleeved with the intramedullary nail body, and the clamping plate is in contact with the outer surface of the intramedullary nail body.

Preferably, the lower end of the T-shaped groove is movably connected with the lower groove wall of the T-shaped groove through a bearing, the T-shaped block is in threaded connection with the adjusting screw rod, and the guide rod is not in contact with the positioning frame.

Preferably, the lower part of the outer surface of the bone cement guide pipe and the lower part of the outer surface of the bone cement push rod are both provided with scale marks, and the lower end of the bone cement guide pipe is provided with a through hole which is vertically penetrated.

Preferably, the bone cement push rod is movably connected with the through hole in an inserting manner.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. in the utility model, the bone cement is poured into the bone cement guide tube and the push plate is pressed into the bone cement guide tube by arranging the bone cement guide tube and the bone cement push rod in the intramedullary nail body, so that the bone cement can be poured into the intramedullary nail body, the stability is improved, and the antibiotics can be poured outside the intramedullary nail body by arranging the antibiotic release holes to avoid causing infection;

2. the utility model discloses in, through cup jointing the intramedullary nail body in fixed sleeve, through rotating fastening screw, can make splint press from both sides tight fixedly to the intramedullary nail body, through being in the same place T type piece and adjusting screw threaded connection, through rotating adjusting screw, can make T type piece carry out position control in T type inslot to make the guide bar remove, improve the accurate nature of location, convenient to use.

Drawings

FIG. 1 is a schematic view of the overall structure of an anti-infective intramedullary nail of the present invention;

FIG. 2 is a schematic view of the whole structure of the aiming device for the anti-infective intramedullary nail of the present invention;

FIG. 3 is a schematic view of the whole structure of a fastening screw of the anti-infective intramedullary nail of the present invention;

fig. 4 is a schematic view of the whole structure of the bone cement catheter of the anti-infective intramedullary nail of the present invention.

In the figure: 1. an intramedullary nail body; 2. an antibiotic-releasing pore; 3. a locking hole; 4. a pull ring; 5. a bone cement conduit; 6. a bone cement push rod; 7. a sighting device; 8. pushing a plate; 51. perforating; 61. scale marks; 71. a positioning frame; 72. adjusting the screw rod; 73. fastening a screw rod; 74. a fixed sleeve; 75. a guide bar; 76. A guide hole; 77. a T-shaped block; 78. a T-shaped groove; 731. and (5) clamping the plate.

Detailed Description

In order to make the utility model realize, the technical means, the creation characteristics, the achievement purpose and the efficacy are easy to understand and understand, the utility model is further explained by combining the specific implementation mode.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1-4, the present invention provides a technical solution:

the utility model provides an anti-infection intramedullary nail, including intramedullary nail body 1, 1 upper end interlude swing joint of intramedullary nail body has

bone cement pipe

5, 5 upper end interlude swing joint of bone cement pipe has bone cement push rod 6, open at 1 surface middle part of intramedullary nail body has a plurality of antibiotic release hole 2, 1 surface upper portion of intramedullary nail body and surface lower part have all been opened a plurality of locking hole 3, 1 surface upper portion of intramedullary nail body is provided with aiming device 7, aiming device 7 is located 3 upper portions of locking hole, 5 surface left parts of bone cement pipe and the equal fixedly connected with pull ring 4 in surface right part, 6 upper end fixedly connected with push pedal 8 of bone cement push rod.

In this embodiment, the sighting device 7 includes a positioning frame 71, a fixing sleeve 74 is fixedly connected to the left end of the positioning frame 71, a fastening screw 73 is connected to the left portion of the outer surface of the fixing sleeve 74 through a thread, an adjusting screw 72 is movably connected to the right portion of the upper end of the positioning frame 71 through a bearing, a T-shaped groove 78 is formed in the front end of the positioning frame 71, a T-shaped block 77 is slidably connected in the T-shaped groove 78, a guide rod 75 is fixedly connected to the front end of the T-shaped block 77, and a plurality of guide holes 76 which are communicated left and right are formed in the right end of the guide rod 75; the right end of the fastening screw 73 is movably connected with a clamping plate 731 through a rotating shaft, the clamping plate 731 is of an arc structure, the clamping plate 731 is located in the fixing sleeve 74, the fixing sleeve 74 is sleeved with the intramedullary nail body 1, and the clamping plate 731 is in contact with the outer surface of the intramedullary nail body 1; the lower end of the T-shaped groove 78 is movably connected with the lower groove wall of the T-shaped groove 78 through a bearing, the T-shaped block 77 is in threaded connection with the adjusting screw 72, the guide rod 75 is not in contact with the positioning frame 71, and the adjusting screw 72 can enable the T-shaped block 77 to be adjusted more accurately, so that the guide hole 76 can be conveniently positioned.

In the embodiment, the lower part of the outer surface of the bone cement conduit 5 and the lower part of the outer surface of the bone cement push rod 6 are both provided with scale marks 61, and the lower end of the bone cement conduit 5 is provided with a through hole 51 which penetrates up and down; bone cement push rod 6 and perforation 51 alternate swing joint, and the implantation depth of control bone cement can be convenient for to scale mark 61, and antibiotic release hole 2 size is 1mm 10mm, can avoid bone cement to ooze through antibiotic release hole 2.

It should be noted that, the utility model relates to an anti-infection intramedullary nail, in the using process, firstly, the intramedullary nail body 1 is inserted into the body of the patient, then the antibiotic is added into the intramedullary nail body 1, the antibiotic flows out through the antibiotic releasing hole 2, so as to avoid infection, then the bone cement is poured into the bone cement conduit 5, then the bone cement push rod 6 is inserted into the bone cement conduit 5, the pull ring 4 is pulled and the push plate 8 is pressed, the bone cement is extruded out of the bone cement conduit 5, simultaneously the bone cement conduit 5 and the bone cement conduit 5 are pulled upwards, so that the bone cement uniformly enters the intramedullary nail body 1, after the bone cement enters, the intramedullary nail body 1 and the fixing sleeve 74 are sleeved together, the fastening screw 73 is rotated, the fastening screw 73 extends towards the inside of the fixing sleeve 74, so that the clamp plate 731 is contacted and clamped with the intramedullary nail body 1, thereby limiting and fixing the intramedullary nail body 1, through rotatory adjusting screw 72, because adjusting screw 72 is in the same place with 77 threaded connection of T type piece, when adjusting screw 72 rotated, can make T type piece 77 remove the regulation from top to bottom in T type groove 78, the locking hole 3 that can adapt to different positions on the one hand leads, and on the other hand can improve the accurate nature of direction, and whole intramedullary nail location efficiency is high, anti-infection effectual, and stability is high, is fit for orthopedic operation's use.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An anti-infection intramedullary nail comprises an intramedullary nail body (1), and is characterized in that: the intramedullary nail is characterized in that a bone cement guide pipe (5) is inserted and movably connected to the upper end of the intramedullary nail body (1), a bone cement push rod (6) is inserted and movably connected to the upper end of the bone cement guide pipe (5), a plurality of antibiotic release holes (2) are formed in the middle of the outer surface of the intramedullary nail body (1), a plurality of locking holes (3) are formed in the upper portion and the lower portion of the outer surface of the intramedullary nail body (1), an aiming device (7) is arranged on the upper portion of the outer surface of the intramedullary nail body (1), the aiming device (7) is located on the upper portion of the locking holes (3), pull rings (4) are fixedly connected to the left portion and the right portion of the outer surface of the bone cement guide pipe (5), and a push plate (8) is fixedly connected to the upper end of the bone cement push rod (6).

2. The anti-infective intramedullary nail of claim 1, wherein: aiming device (7) includes locating rack (71), locating rack (71) left end fixedly connected with fixing sleeve (74), fixing sleeve (74) surface left part threaded connection has fastening screw (73), there are adjusting screw (72) locating rack (71) upper end right part through bearing swing joint, open locating rack (71) front end has T type groove (78), sliding connection has T type piece (77) in T type groove (78), T type piece (77) front end fixedly connected with guide bar (75), open guide bar (75) right-hand member has communicating guiding hole (76) about a plurality of.

3. The anti-infective intramedullary nail of claim 2, wherein: fastening screw (73) right-hand member has splint (731) through pivot swing joint, splint (731) are the arc structure, splint (731) are located fixed sleeve (74), fixed sleeve (74) cup joint with intramedullary nail body (1), splint (731) and intramedullary nail body (1) surface contact.

4. The anti-infective intramedullary nail of claim 2, wherein: the lower end of the T-shaped groove (78) is movably connected with the lower groove wall of the T-shaped groove (78) through a bearing, the T-shaped block (77) is in threaded connection with the adjusting screw rod (72), and the guide rod (75) is not in contact with the positioning frame (71).

5. The anti-infective intramedullary nail of claim 1, wherein: the lower part of the outer surface of the bone cement guide pipe (5) and the lower part of the outer surface of the bone cement push rod (6) are both provided with scale marks (61), and the lower end of the bone cement guide pipe (5) is provided with a through hole (51) which is vertically penetrated.

6. The anti-infective intramedullary nail of claim 5, wherein: the bone cement push rod (6) is movably connected with the through hole (51) in a penetrating way.