CN210931574U

CN210931574U - Double-row-rod automatic retractor

Info

Publication number: CN210931574U
Application number: CN201921148875.0U
Authority: CN
Inventors: 王宁; 宋荣全
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-07-07
Anticipated expiration: 2029-07-22

Abstract

The utility model discloses a double-row rod automatic retractor, which comprises a depth-limiting bone nail, a connecting device, a screw rod and a fixed rod, wherein the connecting device comprises a first connector and a second connector, the first connector comprises a connecting sleeve, a connecting rod and a first rotary limiter, the connecting sleeve is connected with the screw rod through a thread, the connecting rod is welded with the connecting sleeve, and the first rotary limiter is hinged with the connecting rod; the second connector comprises a nut connecting piece and a second rotary limiting stopper, and the second rotary limiting stopper is hinged to the nut connecting piece. The utility model controls the angle of the limiting device through the connecting device, and limits the movement of the bone nail through the limiting device; the bone nail is provided with the limited depth bulge, so that the fixed depth of the bone nail can be effectively limited; when the two connectors are positioned on the same plane to work, the fixing rod can play a double fixing role; the jacking bolt can further fix the depth-limiting bone nail and other components; the components such as the screw rod are made of carbon fiber, so that the structural strength is maintained, and the development does not hinder the operation.

Description

Double-row-rod automatic retractor

Technical Field

The utility model relates to the field of medical equipment, in particular to a double-row-rod automatic retractor.

Background

The retractor is also called a draw hook and is used for retracting tissues and exposing the operation visual field, thereby being convenient for exploration and operation. The orthopedic surgery often needs traction reduction, and the automatic retractor which can be applied to the surgery process is designed to improve the surgery efficiency, save the manpower and enhance the reduction effect. At present, the types of the retractor applied clinically are few, the functions are relatively limited, and one retractor can only be applied to one fracture operation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic retractor of double pole to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a dual row bar automatic retractor comprising: the depth-limiting bone nail comprises a depth-limiting bone nail, a connecting device, a screw rod and a fixed rod, wherein a cylindrical base is welded at the tail of the screw rod; the connecting device comprises a first connector and a second connector, the first connector is arranged in the middle of the screw rod and comprises a connecting sleeve, a connecting rod and a first rotary limiting stopper, the connecting sleeve is connected with the screw rod through threads, the connecting rod is welded with the connecting sleeve, and the first rotary limiting stopper is hinged with the connecting rod; the second connector is arranged at the tail part of the screw rod and comprises a nut connecting piece and a second rotary limiting stopper, the nut connecting piece is connected with the screw rod through threads, and the second rotary limiting stopper is hinged with the nut connecting piece; the fixed rod is arranged in parallel with the screw rod, threads are turned on the outer surface of the fixed rod, and a row of threaded holes are drilled in the rod body; the lateral surfaces of the first rotary limiting device and the second rotary limiting device are both provided with transverse threaded holes in a turning mode, and the first rotary limiting device and the second rotary limiting device are both connected with tightening bolts through the transverse threaded holes; the depth limiting bone nail is fixedly connected with the first rotary limiting device and the second rotary limiting device through tightening bolts.

As a further aspect of the present invention: the fixed rod is sleeved with a sliding connector, a threaded hole is formed in the middle of the sliding connector in a turning mode, and the first connector and the second connector are connected with the fixed rod through the threaded hole in the sliding connector and the threaded hole in the fixed rod respectively.

As a further aspect of the present invention: and fixing nuts are arranged on the left side and the right side of the sliding connector and the connecting sleeve.

As a further aspect of the present invention: the axis of the first rotary limiting stopper is always perpendicular to the axis of the connecting rod, and the axis of the second rotary limiting stopper is always perpendicular to the axis of the nut connecting piece.

As a further aspect of the present invention: the lateral surfaces of the first rotary limiting device and the second rotary limiting device are both provided with transverse threaded holes in a turning mode, and the first rotary limiting device and the second rotary limiting device are both connected with bolts for tightly pushing bone nails through the transverse threaded holes.

As a further aspect of the present invention: the depth limiting bone nail is welded with a depth limiting bulge.

As a further aspect of the present invention: and an anti-slip gasket is arranged between the cylindrical base and the nut connecting piece.

As a further aspect of the present invention: the connecting device, the screw rod and the fixing rod are all made of carbon fibers.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model controls the angle of the position limiter through the connecting device, connects the depth limiting bone nail through the position limiter, the connecting part of the whole device adopts the threaded connection and the hinge joint, and the movable and adjustable angle is greatly increased; the bone nail is provided with the limited depth bulge, so that the fixed depth of the bone nail can be effectively limited; when the two connectors are positioned on the same plane to work, the fixing rod can play a double fixing role; the jacking bolt can further fix the depth-limiting bone nail and other components; in addition, the material of the components such as the screw rod is carbon fiber, so that the structural strength is kept, and the development does not hinder the operation.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the fixing rod.

Fig. 3 is a top view of the present invention when using a single row of rods.

Fig. 4 is a front view of the present invention when using a single row of rods.

Fig. 5 is a schematic structural view of the jacking bolt and the bolt screw.

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, in an embodiment of the present invention, a dual-row rod automatic retractor includes: depth-limiting bone nail 1, connecting device 2, lead screw 3 and dead lever 4, the welding of 3 afterbody of lead screw has cylinder base 31, dead lever 4 and lead screw 3 parallel placement. The depth-limiting bone nail 1 is fixedly connected with the first rotary limiter 213 and the second rotary limiter 222 through a puller bolt 5, and the depth-limiting bone nail 1 is welded with a depth-limiting bulge 11. Need drill the fracture department and fix with the steel nail when carrying out fracture fixation operation, nevertheless traditional drilling tool's drilling depth leans on doctor manual to master completely, is difficult to guarantee that drilling depth at every turn is all unanimous, and limit on the limit for depth bone nail 1 is protruding 11 and just can be fine this problem of solution. The connecting device 2, the screw rod 3 and the fixing rod 4 are all made of carbon fibers. The carbon fiber is a novel fiber material of high-strength and high-modulus fiber with the carbon content of more than 95 percent, has the characteristics of 'soft outer and rigid inner', lighter weight than metal aluminum, higher strength than steel, corrosion resistance and high modulus, has the inherent characteristic of a carbon material, has the soft processability of textile fiber, and is a new generation of reinforced fiber. In addition, the member made of carbon fiber is not developed under X-ray, and does not hinder the operation.

Referring to fig. 2, the outer surface of the fixing rod 4 is threaded, a row of threaded holes are drilled in the rod body, the fixing rod 4 is sleeved with a sliding connector 41, a threaded hole is drilled in the middle of the sliding connector 41, and the first connector 21 and the second connector 22 are connected with the fixing rod 4 through the threaded hole in the sliding connector 41 and the threaded hole in the fixing rod 4 respectively. When the first connector 21 and the second connector 22 are operated in the same plane, the fixing lever 4 can exert its own function. A fixing step: the tail of the second rotation limiter 222 is inserted into one of the threaded holes of the lead screw 3, the tail of the first rotation limiter 213 is inserted into the threaded hole of the sliding connector 41, the position of the sliding connector 41 is properly adjusted, and the sliding connector is fixed by the fixing nut 6.

Referring to fig. 3, the axis of the first rotation limiter 213 is always perpendicular to the axis of the connecting rod 212, and the axis of the second rotation limiter 222 is always perpendicular to the axis of the nut connector 221, which greatly increases the movable angle of the depth bone screw 1. The first rotation limiter 213 and the second rotation limiter 222 are both provided with transverse threaded holes on the side surface in a turning mode, and the first rotation limiter and the second rotation limiter are both connected with bolts 5 for jacking bone nails through the transverse threaded holes. The left side and the right side of the sliding connector 41 and the connecting sleeve 211 are both provided with a fixing nut 6, an anti-sliding gasket 7 is arranged between the cylindrical base 31 and the nut connecting piece 221, the fixing nut 6 plays a role in clamping and fixing, and the anti-sliding gasket 7 plays a role in preventing rotation and sliding.

Referring to fig. 4, the connecting device 2 includes a first connector 21 and a second connector 22, the first connector 21 is disposed in the middle of the screw rod 3, and includes a connecting sleeve 211, a connecting rod 212 and a first rotation limiter 213, wherein the connecting sleeve 211 is connected to the screw rod 3 through a thread, the connecting rod 212 is welded to the connecting sleeve 211, and the first rotation limiter 213 is hinged to the connecting rod 212. The second connector 22 is arranged at the tail of the screw rod 3 and comprises a nut connecting piece 221 and a second rotary limiting stopper 222, the nut connecting piece 221 is connected with the screw rod 3 through threads, and the second rotary limiting stopper 222 is hinged with the nut connecting piece 221. The connecting device 2 functions to connect the lead screw 3 with the first rotation limiter 213 and the second rotation limiter 22; the first rotation limiter 213 and the second rotation limiter 22 can increase the moving angle of the depth bone nail 1 and can limit the movement of the depth bone nail 1.

Referring to fig. 5, one end of the tightening bolt 5 away from the first rotation limiter 213 or the second rotation limiter 222 is connected to a bolt screw 51. When carrying out bone surgery, need bore into suitable position with limit for depth bone nail 1 and carry out corresponding fixed again, this stability and the fastness to corresponding retractor have just provided very high requirement, and the utility model discloses a tight bolt in top 5 and bolt precession ware 51 can satisfy this demand just. After the corresponding limiter is rotated to a proper angle, the puller bolt 5 is used for reinforcing the limiter, the situation that the puller bolt 5 cannot be screwed manually can be met in the screwing process of the puller bolt 5, and at the moment, the bolt screw 51 can skillfully utilize the lever principle to screw the bolt 5 in and top the bolt, so that the purpose of fixing the depth-limiting bone nail 1 and other components is achieved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A dual row bar automatic retractor comprising: limit dark bone nail (1), connecting device (2), lead screw (3) and dead lever (4), its characterized in that: a cylindrical base (31) is welded at the tail of the screw rod (3); the connecting device (2) comprises a first connector (21) and a second connector (22), the first connector (21) is arranged in the middle of the screw rod (3) and comprises a connecting sleeve (211), a connecting rod (212) and a first rotary limiting stopper (213), the connecting sleeve (211) is connected with the screw rod (3) through threads, the connecting rod (212) is welded with the connecting sleeve (211), and the first rotary limiting stopper (213) is hinged with the connecting rod (212); the second connector (22) is arranged at the tail of the screw rod (3) and comprises a nut connecting piece (221) and a second rotary limiter (222), the nut connecting piece (221) is connected with the screw rod (3) through threads, and the second rotary limiter (222) is hinged with the nut connecting piece (221); the fixed rod (4) is arranged in parallel with the screw rod (3), threads are turned on the outer surface of the fixed rod (4), and a row of threaded holes are drilled in the rod body; the lateral surfaces of the first rotary limiting device (213) and the second rotary limiting device (222) are both provided with transverse threaded holes, and the first rotary limiting device and the second rotary limiting device are both connected with a puller bolt (5) through the transverse threaded holes; the depth limiting bone nail (1) is fixedly connected with the first rotary limiting device (213) and the second rotary limiting device (222) through a puller bolt (5).

2. The dual row bar automatic retractor according to claim 1, wherein: the fixing rod (4) is sleeved with a sliding connector (41), a threaded hole is formed in the middle of the sliding connector (41), and the first connector (21) and the second connector (22) are connected with the fixing rod (4) through the threaded hole in the sliding connector (41) and the threaded hole in the fixing rod (4) respectively.

3. The dual row bar automatic retractor according to claim 2, wherein: and fixing nuts (6) are arranged on the left side and the right side of the sliding connector (41) and the connecting sleeve (211).

4. The dual row bar automatic retractor according to claim 1, wherein: the axis of the first rotation limiter (213) is always vertical to the axis of the connecting rod (212), and the axis of the second rotation limiter (222) is always vertical to the axis of the nut connecting piece (221).

5. The dual row bar automatic retractor according to claim 1, wherein: one end, far away from the first rotary limiting device (213) or the second rotary limiting device (222), of the tightening bolt (5) is connected with a bolt screw device (51).

6. The dual row bar automatic retractor according to claim 1, wherein: the depth limiting bone nail (1) is welded with a depth limiting bulge (11).

7. The dual row bar automatic retractor according to claim 1, wherein: an anti-slip gasket (7) is arranged between the cylindrical base (31) and the nut connecting piece (221).

8. The dual row bar automatic retractor according to claim 1, wherein: the connecting device (2), the screw rod (3) and the fixing rod (4) are all made of carbon fibers.