CN211460469U

CN211460469U - Jaw type auxiliary rod placing device

Info

Publication number: CN211460469U
Application number: CN201921582181.8U
Authority: CN
Inventors: 杨立利; 谢栋; 叶程; 刘威; 朱奇; 王泷青
Original assignee: Shanghai Changzheng Hospital
Current assignee: Shanghai Changzheng Hospital
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-09-11
Anticipated expiration: 2029-09-23

Abstract

The utility model discloses a supplementary excellent ware of putting of pincers type, including the chuck, the pincers body, coupling and handle, the chuck is including two splint that are mirror symmetry, and every splint comprises the nut chuck of top and the nut extension section of below, nut chuck and nut extension section are connected as an organic wholely, the nut chuck can clip the nut of short-tail screw, and two nut extension sections opposite facial symmetry processing have the thread tooth the same with the screw thread in the nut of short-tail screw, and when the nut chuck presss from both sides the nut of short-tail screw, the internal thread diameter that is formed by the thread tooth cooperation of two nut extension sections equals the thread diameter in the nut, and the nut supporting with the nut of short-tail screw can be fixed in on the internal thread that is formed by the thread tooth cooperation of two nut extension sections in a rotatory manner; the screw cap is extended, when the titanium rod is positioned above the horizontal plane of the screw cap, the screw cap can be directly screwed in to gradually press and fix the titanium rod, and a rod pressing device or a screw cap lifting device is not needed.

Description

Jaw type auxiliary rod placing device

Technical Field

The utility model relates to a medical auxiliary equipment, concretely relates to supplementary excellent ware of putting of jaw type.

Background

In the existing rod loading process, the tail end screw cap notches of each broken tail screw need to be adjusted into a straight line, and then the pre-bent titanium rod is placed into the screw cap, so that the following problems often exist: 1. the adjusted nail cap is easy to be affected by surrounding tissues and other instruments to be inclined, rotated and the like. 2. In the process of screwing the screw cap, soft tissues such as muscles around the titanium rod and the screw cap can be embedded into the screw cap, the screw cap is affected to be placed, and at present, most of the soft tissues are separated by other auxiliary equipment. 3. When the vertebral body slips and needs to be pulled, pulled and locked at the same time at both sides, the rod cannot be pulled and locked at the same time due to limited operation control space and limited number of operating personnel. 4. When the short-tail screw is placed, the bending degree of the titanium rod is large, the nut cannot be directly placed in, the titanium rod needs to be pressed downwards, and then the nut is placed in. 5. When a long titanium rod needs to be placed and a plurality of screw caps need to be placed, all the screw caps cannot be completely blocked at one time due to limited operation space and limited number of operators.

SUMMERY OF THE UTILITY MODEL

The problem to prior art exists, the utility model provides a supplementary excellent ware of putting of jaw type, with the nail cap chuck of chuck design for the top and the nail cap extension section two parts of below, when the nail cap of the tight short tail screw of nail cap chuck clamp, the extension nail cap when the titanium stick is located the nail cap horizontal plane, can directly twist the nut, with the titanium stick gradual push down, fixed, and need not use and press excellent ware or nail cap to carry and draw the device.

The technical scheme of the utility model is that: the utility model provides a supplementary excellent ware of putting of pincers formula, includes the chuck, the pincers body, coupling and handle, the chuck is including two splint that are mirror symmetry, and every splint comprises the nut chuck of top and the nut extension of below, nut chuck and nut extension are connected as an organic wholely, the nut of short tail screw can be cliied to the nut chuck, and the opposite symmetrical processing that goes up of two nut extension has the screw thread the same with the nut in the nut of short tail screw, and when the nut of tight short tail screw of nut chuck clamp, the internal thread diameter that forms by the screw thread cooperation of two nut extensions equals the screw thread diameter in the nut, can be fixed in on the internal thread that forms by the screw thread cooperation of two nut extensions with the nut that the nut of short tail screw is supporting. When the screw cap chuck clamps the screw cap of the short-tail screw, the screw cap is extended, and when the titanium rod is positioned above the horizontal plane of the screw cap, the screw cap can be directly screwed in to gradually press and fix the titanium rod without using a rod pressing device or a screw cap lifting device.

Further, the thickness of the nail head extension section is equal to the sum of the thickness of the nail head and the thickness of the nail head clamping head.

Furthermore, the clamp body comprises two arc-shaped arms which are in mirror symmetry. The two arms are arc-shaped, so that all soft tissues on two sides of the screw cap can be effectively blocked, and the soft tissues are prevented from being embedded into the screw cap to influence the screw cap placement.

Furthermore, the arc arm includes front and back two parts, is forearm and postbrachium respectively, adopt rotatory fixed knot to connect between forearm and the postbrachium for can receive the force between forearm and the postbrachium and rotate and fix a position at arbitrary angle along perpendicular to coupling direction of rotation.

Further, rotatory fixed festival includes two solid fixed splint, press from both sides the tail end that has the forearm and the front end of postbrachium between two solid fixed splint respectively, be connected through the rotation axis between the tail end of forearm and two solid fixed splint, the front end and two solid fixed splint welding of postbrachium are as an organic whole. When the clamp body rotates along the shaft joint, the nail cap is clamped and loosened in an operating mode. When the nail cap is clamped by the forceps body, the front arm is kept fixed, the rear arm is folded together with the handle, so that any angle is formed between the front arm and the rear arm, the rod placing device is adjusted to be parallel to the titanium rod from the position perpendicular to the titanium rod, the operation control space of the upper side and the two sides is saved, and the rods on the two sides and the rod on one side of a single person can be simultaneously used.

Furthermore, a finger ring capable of being inserted into fingers is arranged at the tail end of the handle. Fingers can be inserted into the finger sleeve, so that the stability of the operation is improved.

Furthermore, the handle comprises two handle bodies which are in mirror symmetry, and a locking device is arranged between the two handle bodies. When the screw cap chuck clamps the screw cap of the short-tail screw, the handle is locked through the locking device, and the chuck is limited to move.

Further, locking device includes two connecting rods one on the other, and on the opposite face that two handle bodies were fixed in to the one end of two connecting rods perpendicular to respectively, the cross section about two connecting rod other ends, the connecting rod bottom of top was provided with first latch, and the connecting rod top of below is provided with the second latch supporting with first latch, and when the cap for a nail chuck pressed from both sides the cap for a nail of tight short-tail screw, first latch and second latch chucking were connected.

The utility model has the advantages that:

1. the chuck is designed into two parts, namely an upper nail cap chuck and a lower nail cap extension section, when the nail cap chuck clamps the nail cap of the short-tail screw, the nail cap is extended, and when the titanium rod is positioned above the horizontal plane of the nail cap, the nut can be directly screwed in to gradually press and fix the titanium rod without using a rod pressing device or a nail cap lifting device.

2. When the nail head clamp is used, each nail head is clamped by the clamp type auxiliary rod placing device, the nail head is adjusted, the clamp body of the clamp type auxiliary rod placing device is bent, and the nail head cannot be inclined, rotated and the like due to the influence of surrounding tissues in the rod feeding process.

3. The clamp bodies of the clamp type auxiliary rod placing devices are designed into arc shapes, and the soft tissues such as muscles on the outer side are automatically stretched in the process of screwing in the screw cap.

4. After the pincer type auxiliary rod placing device is used, an operator can smoothly place the titanium rod on one side, so that a large amount of time can be saved; meanwhile, when the vertebral body slips and needs to be lifted and reset at the two sides, the nuts can be placed at the two sides at the same time, and the vertebral body is lifted and reset.

5. When a long titanium rod is required to be placed and a plurality of screw caps are required to be placed, the titanium rod can be placed at one time, and surrounding tissues do not need to be sequentially adjusted and blocked.

Drawings

FIG. 1 is a schematic view of the overall structure of a pincer-type auxiliary rod-placing device;

FIG. 2 is a schematic view of a structure of a clamp head of the pincer-type auxiliary rod placing device;

FIG. 3 is a schematic structural view of a locking device of the pincer-type auxiliary rod-placing device;

FIG. 4 is a schematic structural view of a short-tail screw inserted into a titanium rod.

In the figure: 1 is the chuck, 2 is the pincers body, 3 is the coupling, 4 is the handle, 5 is locking device, 6 is the short-tail screw, 61 is the nut, 7 is the nut, 8 is the ring, 9 is the titanium stick, 11 is the nut chuck, 12 is the nut extension section, 13 is the thread tooth, 21 is the forearm, 22 is the trailing arm, 23 is the rotatory fixed festival, 231 is the solid fixed splint, 51 is the connecting rod, 52 is first latch, 53 is the second latch.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in figure 1, the pincer type auxiliary rod placing device comprises a clamping head 1, a pincer body 2, a shaft joint 3 and a handle 4. As shown in fig. 2, the chuck 1 comprises two clamping plates in mirror symmetry, each clamping plate is composed of a nail cap chuck 11 at the upper part and a nail cap extension section 12 at the lower part, the nail cap chuck 11 and the nail cap extension section 12 are connected into a whole, the nail cap chuck 11 can clamp the nail cap 61 of the short-tail screw 6 shown in fig. 4, thread teeth 13 which are the same as the thread in the nail cap 61 of the short-tail screw 6 are symmetrically processed on the opposite surfaces of the two nail cap extension sections 12, and the thickness of the nail cap extension section 12 is equal to the sum of the thickness of the nail cap 61 and the thickness of the nail cap chuck 11. When the nut chuck 11 clamps the nut 61 of the tang screw 6, the diameter of the internal thread formed by the mating of the thread teeth 13 of the two nut extensions 12 is equal to the diameter of the thread in the nut 61, and the nut 7 associated with the nut 61 of the tang screw 6 can be rotatably fixed to the internal thread formed by the mating of the thread teeth 13 of the two nut extensions 12.

As shown in figure 1, in order to effectively block all soft tissues at two sides of the nail cap and prevent the soft tissues from being embedded into the nail cap to influence the nut insertion. The clamp body 2 is designed into two arc arms with mirror symmetry. The arc-shaped arm comprises a front part and a rear part which are respectively a front arm 21 and a rear arm 22, and the front arm 21 and the rear arm 22 are connected by a rotary fixing joint 23, so that the front arm 21 and the rear arm 22 can be stressed to rotate along the direction vertical to the rotation direction of the shaft joint and can be positioned at any angle. Preferably, the rotation fixing joint 23 includes two fixing plates 231, the tail end of the front arm 21 and the front end of the rear arm 22 are respectively clamped between the two fixing plates 231, the tail end of the front arm 21 and the two fixing plates 231 are connected through a rotation shaft, and the front end of the rear arm 22 and the two fixing plates 231 are welded into a whole. When the clamp body rotates along the shaft joint, the nail cap is clamped and loosened in an operating mode. When the nail cap is clamped by the forceps body, the front arm is kept fixed, the rear arm is folded together with the handle, so that any angle is formed between the front arm and the rear arm, the rod placing device is adjusted to be parallel to the titanium rod from the position perpendicular to the titanium rod, the operation control space of the upper side and the two sides is saved, and the rods on the two sides and the rod on one side of a single person can be simultaneously used.

In order to increase the stability of the operation. The tail end of the handle 4 is provided with a finger ring 8 which can be inserted with fingers and can extend the fingers into the finger ring.

The handle 4 comprises two handle bodies which are in mirror symmetry, and a locking device 5 is arranged between the two handle bodies. When the screw cap chuck clamps the screw cap of the short-tail screw, the handle is locked through the locking device, and the chuck is limited to move. Preferably, as shown in fig. 3, the locking device 5 includes two connecting rods 51, one end of each connecting rod 51 is perpendicular to the opposite surfaces fixed to the two handle bodies, the other end of each connecting rod 51 is at the upper and lower intersection, a first latch 52 is arranged at the bottom of the upper connecting rod, a second latch 53 matched with the first latch 52 is arranged at the top of the lower connecting rod, and when the nut chuck 11 clamps the nut 61 of the short-tail screw 6, the first latch 52 and the second latch 53 are in clamping connection.

When the titanium rod is positioned above the horizontal plane of the screw cap, the screw cap can be directly screwed in to gradually press and fix the titanium rod, and a pressing rod or a lifting device is not needed. After the forceps-type auxiliary rod-placing device is used, an operator can smoothly place the titanium rod on one side, so that a large amount of time can be saved. Meanwhile, when the vertebral body slips and needs to be lifted and reset at the two sides, the nuts can be placed at the two sides at the same time, and the vertebral body is lifted and reset.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a supplementary excellent ware of putting of pincers type, includes chuck (1), pincers body (2), coupling (3) and handle (4), its characterized in that: the clamping head (1) comprises two clamping plates which are in mirror symmetry, each clamping plate consists of an upper nail cap clamping head (11) and a lower nail cap extension section (12), the nail cap chuck (11) and the nail cap extension sections (12) are connected into a whole, the nail cap chuck (11) can clamp the nail cap (61) of the short-tail screw (6), thread teeth (13) which are the same as the threads in the nail cap (61) of the short-tail screw (6) are symmetrically processed on the opposite surfaces of the two nail cap extension sections (12), when the screw cap clamping head (11) clamps the screw cap (61) of the short-tail screw (6), the diameter of the internal thread formed by the matching of the thread teeth (13) of the two nut extension sections (12) is equal to the diameter of the thread in the nut (61), the nut (7) matched with the nut (61) of the short-tail screw (6) can be rotationally fixed on the internal thread formed by matching the thread teeth (13) of the two nut extension sections (12).

2. The jaw-type auxiliary rod inserter as claimed in claim 1, wherein: the thickness of the nail cap extension section (12) is equal to the sum of the thickness of the nail cap (61) and the thickness of the nail cap clamping head (11).

3. The jaw-type auxiliary rod inserter as claimed in claim 1, wherein: the clamp body (2) comprises two arc-shaped arms which are in mirror symmetry.

4. The jaw-type auxiliary rod inserter as claimed in claim 3, wherein: the arc arm includes front and back two parts, is forearm (21) and postbrachium (22) respectively, adopt rotatory fixed knot (23) to connect between forearm (21) and postbrachium (22) for can the atress rotate and fix at arbitrary angle along perpendicular to coupling direction of rotation between forearm (21) and postbrachium (22).

5. The pincer-type auxiliary rod inserter as claimed in claim 4, wherein: rotatory fixed festival (23) include two solid fixed splint (231), press from both sides the tail end that has forearm (21) and the front end of postbrachium (22) between two solid fixed splint (231) respectively, be connected through the rotation axis between the tail end of forearm (21) and two solid fixed splint (231), the front end and two solid fixed splint (231) welding of postbrachium (22) are as an organic whole.

6. The jaw-type auxiliary rod inserter as claimed in claim 1, wherein: the tail end of the handle (4) is provided with a finger ring (8) which can be inserted with fingers.

7. The jaw-type auxiliary rod inserter as claimed in claim 1, wherein: the handle (4) comprises two handle bodies which are in mirror symmetry, and a locking device (5) is arranged between the two handle bodies.

8. The jaw-type auxiliary rod inserter as claimed in claim 7, wherein: locking device (5) are including one two connecting rods (51) one on the other, on the opposite face that is fixed in two handle bodies of the one end difference perpendicular to of two connecting rods (51), intersection about two connecting rods (51) other ends, the connecting rod bottom of top is provided with first latch (52), the connecting rod top of below is provided with second latch (53) supporting with first latch (52), when cap of a nail chuck (11) clamp tight stub screw (6) nut (61), first latch (52) and second latch (53) chucking are connected.