CN219354064U - Auxiliary positioning tool for coracoid tunnel drilling - Google Patents

Abstract

The utility model provides an auxiliary positioning tool for coracoid tunnel drilling, which comprises the following components: the guide pin drilling structure is provided with at least one tunnel hole for installing a drilling guide pin; the positioning arm is positioned at one end of the guide pin drilling structure and comprises a first arm section and a second arm section, the first arm section is positioned at a first side of the guide pin drilling structure, and the second arm section is positioned at a second side of the guide pin drilling structure; the fixing part is detachably arranged on the positioning arm, so that a first positioning needle is adjustably arranged on the first arm section in position, and a second positioning needle is adjustably arranged on the second arm section in position. Solves the technical problems of larger surgical wound and poorer positioning accuracy in the prior art.

Description

Auxiliary positioning tool for coracoid tunnel drilling

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to an auxiliary positioning tool for coracoid tunnel drilling.

Background

Currently, when using a button titanium plate for fixation against acromioclavicular dislocation, a tunnel needs to be drilled on the collarbone and coracoid process, wherein the optimal tunnel position of the coracoid process base is at the median position of the coracoid process base, the accuracy requirement for drilling on the coracoid process is high, and if the drilling process deviates from the median position of the coracoid process base more, or repeated drilling is performed on the coracoid process base, the coracoid fracture and fixation failure risk exists.

There are two tunnel boring methods adopted in the prior art, wherein the first method is to completely expose the coracoid process, mark the central position of the basal part of the coracoid process under naked eyes, and then bore the tunnel, and the method has high success rate of the tunnel, but needs to completely expose the coracoid process, has large surgical incision and has large damage in the operation. The second method is to drill the tunnel by using the point-to-point positioning device of the anterior cruciate ligament, and although the method does not need to fully expose the coracoid process, a hand-held positioning rod is needed in the process of drilling the tunnel, and the movement of a ground point easily occurs in the process of drilling, so that the tunnel deviates from the middle position of the coracoid substrate.

Therefore, providing an auxiliary positioning tool for coracoid tunnel drilling to reduce surgical trauma and improve positioning accuracy is a problem to be solved by those skilled in the art.

Disclosure of Invention

The utility model aims to provide an auxiliary positioning tool for coracoid tunnel drilling, which at least partially solves the technical problems of larger surgical wounds and poor positioning accuracy in the prior art.

In order to achieve the above object, the present utility model provides an auxiliary positioning tool for coracoid tunnel drilling, including:

the guide pin drilling structure is provided with at least one tunnel hole for installing a drilling guide pin;

the positioning arm is positioned at one end of the guide pin drilling structure and comprises a first arm section and a second arm section, the first arm section is positioned at a first side of the guide pin drilling structure, and the second arm section is positioned at a second side of the guide pin drilling structure;

the fixing part is detachably arranged on the positioning arm, so that a first positioning needle is adjustably arranged on the first arm section in position, and a second positioning needle is adjustably arranged on the second arm section in position.

In some embodiments, the lead drilling structure comprises:

the mounting arm, the locating arm is located the one end of mounting arm, the tunnel hole is seted up along thickness direction in the mounting arm.

In some embodiments, the plurality of tunnel holes are distributed at intervals along the length direction of the mounting arm.

In some embodiments, the number of the tunnel holes is six, the inner diameter of each tunnel hole is 2.5mm, and the distance between two adjacent tunnel holes is 1mm.

In some embodiments, the first arm segment comprises:

a first clamping plate located on a first side of the mounting arm;

the second clamping plate is arranged at intervals with the first clamping plate and is positioned on the first side of the mounting arm;

the first clamping groove is formed by the first clamping plate and the second clamping plate in a surrounding mode, and the first positioning needle is installed in the first clamping groove in a position-adjustable mode.

In some embodiments, the securing portion comprises:

the first fixing part is arranged on the first arm section and comprises a first U-shaped clamping seat and a first screw, the first U-shaped clamping seat is arranged on the first clamping plate and the second clamping plate in a crossing mode, a first through hole and a first threaded hole are formed in the first U-shaped clamping seat, a first positioning needle penetrates through the first through hole, the first screw is in threaded connection with the first threaded hole, and the inner end of the first screw abuts against the second clamping plate;

in some embodiments, the second arm segment comprises:

a third clamping plate located on a second side of the mounting arm;

the fourth clamping plate is arranged at intervals with the third clamping plate and is positioned on the second side of the mounting arm;

the second clamping groove is formed by encircling the third clamping plate and the fourth clamping plate, and the second positioning needle is adjustably arranged in the second clamping groove.

In some embodiments, the securing portion comprises:

the second fixing part is arranged on the second arm section and comprises a second U-shaped clamping seat and a second screw, the second U-shaped clamping seat is arranged on the third clamping plate in a crossing mode and the fourth clamping plate, a second through hole and a second threaded hole are formed in the second U-shaped clamping seat, a second positioning needle penetrates through the second through hole, the second screw is in threaded connection with the second threaded hole, and the inner end of the second screw abuts against the third clamping plate.

In some embodiments, the positioning arm is of unitary construction with the mounting arm.

In some embodiments, graduation marks are provided on each of the first arm segment and the second arm segment.

In the operation process of the auxiliary positioning tool for coracoid tunnel drilling, the coracoid tunnel is not required to be exposed in the use process, the incision at the clavicle can be reduced to 2cm, the middle position of the coracoid base can be accurately positioned after the inner edge and the outer edge of the coracoid base are confirmed by the two Kirschner wires, the operation incision is smaller, the wound in operation is greatly reduced, the postoperative recovery is faster, in addition, the auxiliary positioning tool is used for positioning, the intraoperative error is smaller, the perspective frequency is small, and the radiation exposure of patients and operators in operation is effectively reduced. Thereby solving the technical problems of larger surgical wound and poorer positioning accuracy in the prior art.

Drawings

FIG. 1 is a schematic structural view of an auxiliary positioning tool for coracoid tunnel drilling provided by the utility model;

fig. 2 is a schematic structural diagram of a first fixing portion in the auxiliary positioning tool shown in fig. 1.

Reference numerals illustrate:

1-a guide pin drilling structure and 11-a tunnel hole;

2-a first arm segment, 21-a first clamping plate, 22-a second clamping plate, 23-a first clamping groove;

3-second arm segment, 31-third clamping plate, 32-fourth clamping plate, 33-second clamping groove;

4-a first fixing part;

41-first U-shaped clamping seat, 42-first through hole and 43-first threaded hole.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of an auxiliary positioning tool for coracoid tunnel drilling according to the present utility model; fig. 2 is a schematic structural diagram of a fixing portion in the auxiliary positioning tool shown in fig. 1.

In one specific embodiment, the utility model provides an auxiliary positioning tool for coracoid tunnel drilling, which comprises a guide pin drilling structure 1, a positioning arm and a fixing part. Wherein, the guide pin drilling structure 1 is provided with at least one tunnel hole 11 for installing a drilling guide pin; the positioning arm is positioned at one end of the guide pin drilling structure 1 and comprises a first arm section 2 and a second arm section 3, the first arm section 2 is positioned at a first side of the guide pin drilling structure 1, and the second arm section 3 is positioned at a second side of the guide pin drilling structure 1; the fixing part is detachably mounted on the positioning arm, so that a first positioning needle is adjustably mounted on the first arm section 2 in position, and a second positioning needle is adjustably mounted on the second arm section 3 in position. During operation, the drill guide pins are inserted into the tunnel holes 11 after the two positioning pins are fixed in place on the positioning arms.

Specifically, the guide pin drilling structure 1 is a guide pin drilling component for a collarbone and coracoid process tunnel, the guide pin drilling structure 1 comprises a mounting arm, the positioning arm is positioned at one end of the mounting arm, and the tunnel hole 11 is formed in the mounting arm along the thickness direction. For example, the mounting arm may have a rectangular parallelepiped structure, and the width and thickness of the mounting arm are both about 5mm, and the tunnel hole 11 is provided in the longitudinal direction, and the tunnel hole 11 penetrates the thickness direction of the mounting arm.

Because of the difference of the sizes of the patients, in order to improve the positioning performance of the crowd with different sizes, the number of the tunnel holes 11 is plural, and the tunnel holes 11 are distributed at intervals along the length direction of the mounting arm. For example, for matching with other surgical instruments, the number of the tunnel holes 11 is six, the inner diameter of each tunnel hole 11 is 2.5mm, and the distance between two adjacent tunnel holes 11 is 1mm. Obviously, more, for example, 8, 10, etc., tunnel holes 11 may be provided.

The positioning arm is used for positioning parts at the inner edge and the outer edge of the coracoid process base part, and comprises a first arm section 2 and a second arm section 3, wherein the two arm sections are of a bilateral symmetry structure, a 2mm interval is reserved between the two arm sections, and scale marks are arranged on the first arm section 2 and the second arm section 3 so that the positioning positions of the two positioning needles can be accurately adjusted and observed during use.

In some embodiments, the fixation of the positioning needle is achieved by clamping, and the adjustment of the positioning position is achieved by means of clamping grooves. Specifically, the first arm segment 2 includes a first clamping plate 21, a second clamping plate 22, and a first clamping groove 23; the first clamping plate 21 is located on a first side of the mounting arm, the first clamping plate 21 and the second clamping plate 22 are arranged at intervals and located on the first side of the mounting arm, the first clamping plate 21 and the second clamping plate 22 enclose a first clamping groove 23, and the first positioning needle is adjustably mounted in the first clamping groove 23.

In the use, first pilot pin cartridge is in first centre gripping groove 23, through the removal adjustment suitable position of following first centre gripping groove 23, confirm suitable position, through fixed part locking first pilot pin.

For cooperating with first arm segment 2, the fixed part includes first fixed part 4, first fixed part 4 install in first arm segment 2, first fixed part 4 includes first U type cassette 41 and first screw, first U type cassette 41 is striden and is located first grip block 21 with second grip block 22, first via hole 42 and first screw hole 43 have been seted up on the first U type cassette 41, first pilot pin passes first via hole 42, first screw with first screw hole 43 threaded connection, the inner of first screw support in second grip block 22 to realize the locking of first pilot pin.

Similar to the structure of the first arm segment 2, the second arm segment 3 comprises a third clamping plate 31, a fourth clamping plate 32 and a second clamping groove 33; the third clamping plate 31 is located on the second side of the mounting arm, the fourth clamping plate 32 is disposed at intervals with the third clamping plate 31, and is located on the second side of the mounting arm, the second clamping groove 33 is surrounded by the third clamping plate 31 and the fourth clamping plate 32, and the second positioning needle is adjustably mounted in the second clamping groove 33.

In use, the second positioning needle is inserted into the second clamping groove 33, and after the proper positioning position is determined by adjusting the proper positioning position along the movement of the second clamping groove 33, the second positioning needle is locked by the fixing part.

For cooperating with the second arm segment 3, the fixed part includes the second fixed part, the second fixed part install in the second arm segment 3, the second fixed part includes second U type cassette and second screw, the second U type cassette is striden and is located third grip block 31 with fourth grip block 32, second via hole and second screw hole have been seted up on the second U type cassette, the second locating needle passes the second via hole, the second screw with second screw hole threaded connection, the inner of second screw support lean on in third grip block 31 to realize the locking of second locating needle.

It will be appreciated that the first fixing portion 4 and the second fixing portion have the same structure, and reference is made to fig. 2.

The positioning arm and the mounting arm can be of an integrated structure, or of a split structure and are fixedly connected through a clamping structure and the like.

In the use process, an incision of about 2cm is made above the collarbone, after the collarbone is separated and exposed, two 2.0 Kirschner wires are respectively used for clinging to the inner edge and the outer edge of the coracoid process to determine the inner edge and the outer edge of the coracoid process at the corresponding position of the coracoid process in front of the collarbone, the two Kirschner wires are kept parallel, then the two Kirschner wires are respectively placed in the interval of the product structure 2, the structure 1 is positioned at the center of the two Kirschner wires according to the scale adjustment position on the product, the structure 1 is placed above the collarbone, and then the device 3 is respectively screwed and fixed after passing through the two Kirschner wires. At this time, 1 2.5 k-wire is inserted into the foremost tunnel hole of the structure 1 until the position is above the coracoid process base part, the C-arm perspective is used for confirming that the central guide pin is positioned behind the midbrium of the coracoid process base part (the midline positions of the two positioning k-wires), a proper tunnel is selected in the tunnel hole of the structure 1 to drill holes above the collarbone and on the coracoid process, after the drilling is finished, the positioning product is removed, and the hollow guide drill is used for drilling the collarbone and the coracoid process base part bone tunnel for subsequent operation.

In the specific embodiment, in the operation process of the auxiliary positioning tool for coracoid tunnel drilling, the coracoid tunnel is not required to be exposed in the use process, the incision at the clavicle can be reduced to 2cm, the middle position of the coracoid base can be accurately positioned after the inner edge and the outer edge of the coracoid base are confirmed through two Kirschner wires, the operation incision is smaller, the wounds in the operation are greatly reduced, the postoperative recovery is faster, in addition, the auxiliary positioning tool is used for positioning, the error in the operation is smaller, the perspective frequency is low, and the radiation exposure of patients and operators in the operation is effectively reduced. Thereby solving the technical problems of larger surgical wound and poorer positioning accuracy in the prior art.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "plurality" is two or more unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A auxiliary positioning frock for coracoid process tunnel is got, its characterized in that includes:

the guide pin drilling structure (1), wherein the guide pin drilling structure (1) is provided with at least one tunnel hole (11) for installing a drilling guide pin;

the positioning arm is positioned at one end of the guide pin drilling structure (1) and comprises a first arm section (2) and a second arm section (3), the first arm section (2) is positioned at the first side of the guide pin drilling structure (1), and the second arm section (3) is positioned at the second side of the guide pin drilling structure (1);

and the fixing part is detachably arranged on the positioning arm, so that a first positioning needle is adjustably arranged on the first arm section (2) in position, and a second positioning needle is adjustably arranged on the second arm section (3) in position.

2. The auxiliary positioning fixture for coracoid tunnel drilling according to claim 1, wherein the guide pin drilling structure (1) comprises:

the positioning arm is positioned at one end of the mounting arm, and the tunnel hole (11) is formed in the mounting arm along the thickness direction.

3. The auxiliary positioning tool for coracoid tunnel drilling according to claim 2, wherein the number of tunnel holes (11) is plural, and each tunnel hole (11) is distributed at intervals along the length direction of the mounting arm.

4. The auxiliary positioning tool for coracoid tunnel drilling according to claim 3, wherein the number of the tunnel holes (11) is six, the inner diameter of each tunnel hole (11) is 2.5mm, and the distance between two adjacent tunnel holes (11) is 1mm.

5. The auxiliary positioning fixture for coracoid tunnel drilling according to claim 2, wherein the first arm segment (2) comprises:

a first clamping plate (21), the first clamping plate (21) being located on a first side of the mounting arm;

a second clamping plate (22), wherein the second clamping plate (22) is arranged at intervals with the first clamping plate (21) and is positioned on the first side of the mounting arm;

the first clamping groove (23), first clamping plate (21) with second clamping plate (22) enclose first clamping groove (23), first pilot pin position adjustable install in first clamping groove (23).

6. The auxiliary positioning tool for coracoid tunnel drilling according to claim 5, wherein the fixing portion includes:

the first fixing part (4), first fixing part (4) install in first arm section (2), first fixing part (4) include first U type cassette (41) and first screw, first U type cassette (41) stride locate first grip block (21) with second grip block (22), first via hole (42) and first screw hole (43) have been seted up on first U type cassette (41), first pilot pin passes first via hole (42), first screw with first screw hole (43) threaded connection, the inner of first screw support lean on in second grip block (22).

7. The auxiliary positioning fixture for coracoid tunnel drilling according to claim 2, wherein the second arm segment (3) comprises:

a third clamping plate (31), the third clamping plate (31) being located on a second side of the mounting arm;

a fourth clamping plate (32), wherein the fourth clamping plate (32) is arranged at intervals with the third clamping plate (31) and is positioned on the second side of the mounting arm;

the second clamping groove (33), the third clamping plate (31) and the fourth clamping plate (32) enclose the second clamping groove (33), and the second positioning needle is adjustably arranged in the second clamping groove (33).

8. The auxiliary positioning tool for coracoid tunnel drilling according to claim 7, wherein the fixing portion includes:

the second fixing part is arranged on the second arm section (3), the second fixing part comprises a second U-shaped clamping seat and a second screw, the second U-shaped clamping seat is arranged on the third clamping plate (31) and the fourth clamping plate (32) in a crossing mode, a second through hole and a second threaded hole are formed in the second U-shaped clamping seat, a second positioning needle penetrates through the second through hole, the second screw is in threaded connection with the second threaded hole, and the inner end of the second screw is propped against the third clamping plate (31).

9. The auxiliary positioning tool for coracoid tunnel drilling according to claim 2, wherein the positioning arm and the mounting arm are of an integral structure.

10. The auxiliary positioning fixture for coracoid tunnel drilling according to any one of claims 1-9, wherein graduation marks are provided on both the first arm segment (2) and the second arm segment (3).