CN218870426U

CN218870426U - PCL shin bone stop fracture tunnel preparation and wire passing device

Info

Publication number: CN218870426U
Application number: CN202222718455.XU
Authority: CN
Inventors: 刘张冰
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-04-18
Anticipated expiration: 2032-10-17

Abstract

The utility model provides a PCL tibia cut-off fracture tunnel manufacturing and threading device, which comprises a positioning needle, a bone fragment cleaning needle and a threading device; the hollow positioning needle is a hollow stainless steel needle, and one end of the hollow positioning needle is a sharp angle with a 30-degree inclined plane; the bone fragment cleaning needle is a solid stainless steel needle, the head part of the bone fragment cleaning needle is a tip end, the tail part of the bone fragment cleaning needle is round and blunt, and the diameter of the rear end of the bone fragment cleaning needle is larger than that of the front end of the bone fragment cleaning needle; the thread passing device is a solid stainless steel needle, the head part of the thread passing device is of a Y-shaped structure, and single-strand 2-0 absorbable or non-absorbable suture threads can be accommodated between two Y-shaped arms of the thread passing device; the utility model discloses can realize quick minimal access surgery, it is practical strong and repeatability is high.

Description

PCL shin bone stop fracture tunnel preparation and wire passing device

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to PCL shin bone stop tunnel preparation and wire passing device.

Background

The fracture of tibia cut off after suture line is fixed by double bone channel and then cruciate ligament (PCL) is a common operation mode under arthroscope. Usually, 2.0mm kirschner wire is used for positioning the bone passage, 4.5mm hollow drill is used for expanding the passage, shoulder joint line grasping forceps are used for directly passing through the bone tunnels, if the distance between the inner openings of the two tunnels is large, the suture cannot accurately press down the bone block, even the suture slips from the edge of the bone block, if the distance is small, the diameter of the inner opening of the tunnel is large, if a patient suffering from osteoporosis is met, when the suture in the tunnel is tensioned, the inner openings are easy to be cut and fused, and both the inner openings can cause the failure of resetting and fixing. In order to avoid the problems, most doctors clinically withdraw the kirschner wire after positioning the bone canal by a 2.0mm kirschner wire, insert the epidural puncture needle along the original bone canal, and thread the epidural puncture needle by using a suture hook pull rope or a PDS thread. However, the operation is complicated, and because the tunnel is thin, the time and labor are often consumed because the outer opening of the tunnel cannot be found when the epidural puncture needle is replaced.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model aims to provide a PCL shin bone stop fracture tunnel preparation and wire passing device of wicresoft, quick, practical and repeatability.

The utility model discloses a realize through following technical scheme:

a PCL tibia stopping fracture tunnel manufacturing and threading device comprises a positioning needle, a bone fragment cleaning needle and a threading device; the hollow positioning needle is a hollow stainless steel needle, and one end of the hollow positioning needle is a sharp angle with a 30-degree inclined plane; the bone fragment cleaning needle is a solid stainless steel needle, the head part of the bone fragment cleaning needle is a tip end, the tail part of the bone fragment cleaning needle is in a round blunt shape, and the diameter of the rear end of the bone fragment cleaning needle is larger than that of the front end of the bone fragment cleaning needle; the thread passing device is a solid stainless steel needle, the head part of the thread passing device is of a Y-shaped structure, and single-strand 2-0 absorbable or non-absorbable suture threads can be accommodated between two Y-shaped arms of the thread passing device; the bone fragment cleaning needle and the thread passing device can slide in the hollow interior of the positioning needle; the length of the positioning needle is 250mm, the outer diameter of the positioning needle is 2.0mm, and the wall thickness of the positioning needle is 0.4mm. The positioning needle is provided with scales, the accuracy is 5mm, the tunnel length can be conveniently estimated before drilling the bone in the operation, the length of the positioning needle is limited, and the risk of popliteal vascular nerve injury caused by too deep entering is avoided; the length of the bone fragment cleaning needle is 320mm; the front working length is 255mm, and the diameter is 1.1mm; the tail part of the electric toothbrush is in a conical shape, the length is 65mm, the diameter is 1.5mm, and the tail part of the electric toothbrush is used as a handle; the length of the wire passing device is 320mm; the front part has a working length of 270mm and a diameter of 0.7mm; the head end is similar to a Y shape, the outer diameter is 0.8mm, the inner diameter is 0.6mm, the height of the Y-shaped double arms is 2.0mm, and the top ends of the arms are smooth; the tail part is in a conical shape, the length is 50mm, the diameter is 1.5mm, the tail end is round and blunt, and the tail part is used as a handle.

The utility model has the advantages that:

the utility model discloses a can realize quick minimal access surgery, it is strong and repeatability is high to be practical.

Drawings

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

Fig. 1 is the utility model discloses in PCL shin bone stop fracture tunnel preparation and wire passing device work schematic diagram one.

Fig. 2 is a schematic diagram of the PCL tibia stopping fracture tunnel manufacturing and line passing device operation in the present invention.

Fig. 3 is a schematic view of the structure of the positioning pin of the present invention.

Fig. 4 is a schematic structural view of the bone fragment cleaning needle of the present invention.

Fig. 5 is a schematic view of the structure of the wire passing device of the present invention.

Shown in the figure: 1-a positioning needle; 2-bone fragment cleaning needle; and 3-a wire passing device.

Detailed Description

The following description is given for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be apparent to those skilled in the art from the disclosure of the present invention.

It should be understood that the drawings of the present application are only used to match the contents disclosed in the specification, so as to be known and read by those skilled in the art, and not to limit the practical limitations of the present invention, so that the present application does not have any technical significance, and any modification of the structure, change of the ratio relationship, or adjustment of the size should still fall within the scope of the present application without affecting the function and the achievable purpose of the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and the like used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be considered as the scope of the present invention without substantial changes in the technical content.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1-5, a PCL tibia insertion point fracture tunnel making and threading device comprises: a positioning needle 1, a bone fragment cleaning needle 2 and a thread passing device 3.

The positioning needle 1 is a stainless steel hollow tube with the length of 250mm, the outer diameter of 2.0mm and the wall thickness of 0.4mm (namely the inner diameter of 1.2 mm) (if the wall thickness is too large, the inner diameter is insufficient, the threading is difficult in the operation, and if the wall thickness is too small, the strength of the needle body is reduced, and the fracture risk exists in the process of drilling a bone tunnel); the head of the positioning needle 1 is ground into a 30-degree inclined plane and is polished to be smooth and sharp by a CBN grinding rod, so that a bone tunnel is conveniently drilled in the operation; the surface of the positioning needle 1 is marked with scales by laser, the accuracy is 5mm, the tunnel length can be conveniently estimated before drilling a bone tunnel in an operation, the length of the positioning needle is limited, and the risk of popliteal vascular nerve injury caused by too deep entering is avoided.

After the bone fragment cleaning needle 2 is used for drilling a bone passage in an operation, certain bone fragments cannot be avoided to remain in the hollow positioning needle, so that difficulty exists in subsequent threading, and the bone fragments need to be cleaned; the bone fragment cleaning needle 2 is a solid stainless steel rib round needle with the length of 320mm, the tip is sharp, and the tail end is round and blunt; 2 anterior working length 255mm, the diameter 1.1mm of bone bits clearance needle, 2 afterbody of bone bits clearance needle become the toper form, length 65mm, diameter 1.5mm, can restrict 2 needle points of bone bits clearance needle and surpass 1 top 5mm of pilot pin, prevent accidental injury knee rear popliteal vascular nerve, make the bone bits get into the knee joint back room of the drawing back and forth repeatedly in the art, unobstructed hollow registration arm, the follow-up line of being convenient for.

Because the positioning needle 1 is longer, the difficulty and the time are still existed in the operation of passing through the double-strand smooth PDS thread, and the cost of the thread passing inhaul cable is high, the problems can be well solved through the thread passing device 3; the thread passing device 3 is a solid stainless steel rib round needle with the length of 320mm; the front part has a working length of 270mm and a diameter of 0.7mm; the head is similar to a 'Y' -shaped structure, the outer diameter is 0.8mm, the inner diameter is 0.6mm, the height of two arms of the 'Y' -shaped structure of the head is 2.0mm, the top ends of the two arms are smooth, and single-strand 2-0 absorbable or non-absorbable suture can be accommodated between the two arms; the tail part is in a conical shape, the length is 50mm, the diameter is 1.5mm, and the tail end is round and blunt.

The operation steps are as follows:

firstly, respectively positioning two sides of a knee joint rear room bone bed base by means of a PCL positioner, drilling a bone passage by using a positioning needle 1, then cleaning bone fragments in the hollow interior of the positioning needle 1 by using a bone fragment cleaning needle 2, after cleaning, drawing out the bone fragment cleaning needle 2, placing the middle part of a suture between Y-shaped double arms at the head part of a thread passing device 3, inserting the positioning needle 1 into the knee joint rear room, moderately drawing back the thread passing device 3, grasping a reverse folded suture by using a thread grasping forceps in a rear side access way, taking out the thread passing device 3 in an original way, sleeving the suture for fixing the PCL into a coiled traction line, dismantling the hollow positioning needle 1 of the forceps jaws, and guiding the fixed line out of a tunnel outer opening by using the traction line, thereby completing the rapid integration of thin tunnel manufacturing and thread passing.

The protection scope of the present invention is not limited to the technical solutions disclosed in the embodiments, and any modifications, equivalent replacements, improvements, etc. made by the technical entities of the present invention to the above embodiments all fall into the protection scope of the present invention.

Claims

1. A PCL tibia end point fracture tunnel manufacturing and threading device is characterized by comprising a positioning needle (1), a bone fragment cleaning needle (2) and a threading device (3); the positioning needle (1) is a hollow stainless steel needle, and one end of the positioning needle is a sharp angle with a 30-degree inclined plane; the bone fragment cleaning needle (2) is a solid stainless steel needle, the head part is a tip end, the tail part is in a round blunt shape, and the diameter of the rear end is larger than that of the front end; the thread passing device (3) is a solid stainless steel needle, the head part of the thread passing device is of a Y-shaped structure, and single-strand 2-0 absorbable or non-absorbable suture threads can be accommodated between two Y-shaped arms of the thread passing device; the bone fragment cleaning needle (2) and the thread passing device (3) can slide in the hollow interior of the positioning needle (1).

2. The PCL tibia insertion point fracture tunnel manufacturing and threading device according to claim 1, wherein the length of the positioning needle (1) is 250mm, the outer diameter of the positioning needle is 2.0mm, and the wall thickness of the positioning needle is 0.4mm.

3. The PCL tibia dead point fracture tunnel making and threading device according to claim 1 or 2, wherein the positioning needle (1) is provided with scales, and the accuracy is 5mm.

4. The PCL tibia insertion point fracture tunnel manufacturing and threading device according to claim 1, wherein the length of the bone fragment cleaning needle (2) is 320mm; the front working length is 255mm, and the diameter is 1.1mm; the tail part is in a conical shape, the length is 65mm, and the diameter is 1.5mm.

5. The PCL tibia end-stop fracture tunnel manufacturing and threading device according to claim 1, wherein the length of the threading device (3) is 320mm; the front part has a working length of 270mm and a diameter of 0.7mm; the head end is similar to a Y shape, the outer diameter is 0.8mm, the inner diameter is 0.6mm, the height of the Y-shaped double arms is 2.0mm, and the top ends of the arms are smooth; the tail part is in a conical shape, the length is 50mm, the diameter is 1.5mm, and the tail end is round and blunt.