CN218870435U

CN218870435U - PCL wire passing device

Info

Publication number: CN218870435U
Application number: CN202222685251.0U
Authority: CN
Inventors: 刘张冰
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-04-18
Anticipated expiration: 2032-10-12

Abstract

The utility model provides a PCL threading device, which comprises three parts, namely a positioning guider, a ligament puncture needle and a threading device; the positioning guider comprises a handle and a hollow tube, wherein a vertical through hole is formed in the handle; one end of the hollow pipe is fixed on the through hole at the top of the handle, the port at the other end is an arc opening, and a bend is arranged near the port; the ligament puncture needle is a stainless steel hollow tube with one end being a smooth sharp end with a 30-degree inclined plane and having toughness; the ligament puncture needle can enter from the tail part of the positioning guider and penetrate out of the hollow tube; the thread passing device is a solid stainless steel rib round needle, the tail part of the thread passing device is round and blunt, and the head part of the thread passing device is a Y-shaped opening; the thread passing device can enter from the tail part of the ligament puncture needle and pass out from the head part; the utility model discloses a can realize minimal access surgery, and reproducibility, repeatability are high, a PCL wire passing device that the practicality is strong.

Description

PCL wire passing device

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to PCL wire passing device.

Background

Posterior Cruciate Ligament (PCL) tibial insertion avulsion fractures are a special type of PCL injury. With the development of arthroscopic technology in recent years, scholars at home and abroad tend to use arthroscopic minimally invasive therapy to treat PCL tibia insertion avulsion fracture. Double-bone high-strength suture fixation is a commonly used under-the-mirror operation type. Two ends of the suture thread are respectively penetrated out of the rear part of the ligament from the front inner side and the front outer side of the posterior cruciate ligament in a surrounding way, and then are tied and fixed by pulling out the pressing bone block from the double bone channels. This way of passing around the ligament presents the following problems: (1) when the suture passes out from the front side and the outer side of the posterior cruciate ligament to the back side, the synovial membrane between the anterior cruciate ligament and the posterior cruciate ligament needs to be cleaned, so that the blood supply of the ligament can be further damaged, and even the parenchyma part of the ligament can be damaged; (2) discomfort may occur when sutures are secured to hold the ligamentum femoris together; (3) if the torn bone pieces are completely separated (Meyers type III)

There is a risk that the suture will slip out of the base of the bone block; (4) the operation is complicated and time-consuming, and the difficulty is high. This is avoided by threading the suture slightly proximal to the PCL tendon-bone junction. The clinical analysis of 65 cases of tibia insertion avulsion fracture of cruciate ligament after the treatment under the full arthroscope [ J ] minimally invasive medicine, 2015,10 (3): 378-380 ] utilizes a meniscus suture hook to penetrate into parenchyma parts of the cruciate ligament, and introduces a double-strand Xianbang No. 5 suture. However, the operation of the half-moon plate suture hook has high requirements on operators, the repeatability is poor, the diameter of the suture hook is larger by about 2.0mm, the needle insertion angle and direction need to be continuously adjusted in the puncture process, and the damage to the parenchyma of the ligament is additionally aggravated.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model aims to provide a PCL line system that wicresoft, practicality are strong and repeatability are high.

The utility model discloses a realize through following technical scheme:

a PCL threading device comprises three parts, namely a positioning guider, a ligament puncture needle and a threading device; the positioning guider comprises a handle and a hollow pipe, wherein a vertical through hole is formed in the handle; one end of the hollow pipe is sleeved in the through hole of the handle, the port of the other end of the hollow pipe is an arc opening, and a bend is arranged near the port; the ligament puncture needle is a stainless steel hollow tube with one end being a smooth sharp end with a 30-degree inclined plane and having toughness; the ligament puncture needle can enter from the tail part of the positioning guider and penetrate out of the hollow tube; the thread passing device is a solid stainless steel rib round needle, the tail part of the thread passing device is round and blunt, and the head part of the thread passing device is a Y-shaped opening; the thread passing device can enter from the tail part of the ligament puncture needle and pass out from the head part; the first hollow pipe is 200mm long, 3.0mm in outer diameter and 0.25mm in wall thickness; a bend of 15-45 degrees is arranged at a position of the hollow pipe, which is 25mm away from the port; the ligament puncture needle is 280mm long, 1.5mm in outer diameter and 0.15mm in wall thickness; the length of the wire passing device is 350mm, and the rod diameter is 0.7mm; the height of two arms of the Y-shaped head of the thread passing device is 2.0mm, and single-strand 2-0 absorbable or non-absorbable suture can be accommodated between the two arms.

The utility model has the advantages that:

the utility model discloses a can realize minimal access surgery, and reproducibility, repeatability are high, a PCL wire passing device that the practicality is strong.

Drawings

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

Fig. 1 is a schematic view of the PCL wire passing device of the present invention.

Fig. 2 is a schematic structural view of the positioning guide of the present invention.

Fig. 3 is a schematic view of the ligament puncture needle of the present invention.

Fig. 4 is a schematic view of the structure of the wire passing device of the present invention.

Shown in the figure: 1-positioning a guider; 11-a handle; 12-hollow pipe; 13-a through hole; 2-ligament puncture needle; and 3-a wire passing device.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

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 should be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should 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 as a specific case by those skilled in the art. It is to 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. 1-4, a PCL wire passing device includes: the device comprises a positioning guider 1, a handle 11, a hollow tube 12, a through hole 13, a ligament puncture needle 2 and a thread passing device 3.

The positioning guider 1 comprises a handle 11 and a hollow tube 12; hollow tube 12 is long 200mm, external diameter 3.0mm, wall thickness 0.25mm (internal diameter 2.5mm promptly), and certain toughness stainless steel hollow tube 12 has, bend into 15, 30, 45 (according to the individual of dissecting of difference in the art in 12 one end of hollow tube apart from port 25mm department, can suitably adjust the director and stretch the radian of bending), only keep the long circular arc lateral wall of convex side 4mm in the 12 port of hollow tube portion, the shape is similar to "duckbill" form, the port edge is polished smoothly with the CBN abrasive rod, the long convex side wall of 4mm is similar to exploring hook appearance effect, be used for exploring PCL fore-and-aft thickness and ligament tendon and bone joint portion in the art, be convenient for confirm the needle position of advancing. A vertical through hole 13 is formed in the handle 11 from top to bottom; the other end of the hollow tube 12 is sleeved and fixed in a through hole 13 at the head of the wooden handle 11, the distance between the end of the hollow tube and the head of the handle (namely the linear working length) is 110mm, and the handle 11 is held to facilitate accurate positioning or guiding operation in the operation.

The ligament puncture needle 2 is a stainless steel hollow tube with the length of 280mm, the outer diameter of 1.5mm and the wall thickness of 0.15mm (namely the inner diameter of 1.2 mm), one end of the ligament puncture needle 2 is ground into a 30-degree inclined plane, and a CBN grinding rod is used for grinding the inclined plane to be smooth and sharp.

The thread passing device 3 is a solid stainless steel rib round needle with the length of 350mm, the rod diameter is 0.7mm, the tail end is round and blunt, the top end is similar to a Y shape, the outer diameter is 0.8mm, the inner diameter of a middle groove is 0.6mm (namely the diameter of two arms is 0.1 mm), the height of the Y-shaped arms is 2.0mm, the top ends of the arms are smooth, and single-strand 2-0 absorbable or non-absorbable suture threads can be accommodated between the two arms.

The operation steps are as follows:

under the monitoring of the posterior lateral approach of the knee joint, the positioning guider 1 is placed in the posterior medial approach, the convex side of the positioning guider 1 is enabled to be forward (namely, the opening of the port part is backward), the needle insertion point is ensured to be positioned slightly above the PCL tendon bone combination part and in the middle of the inner side edge of the ligament or slightly ahead by the hook-like action of the convex side wall, the ligament puncture needle 2 is inserted into a through hole 13 at the tail part of the positioning guider 1 and parallel to the coronal plane of the ligament to penetrate through the substance from the outer side, the miniature thread passing device 3 is forked into a 2-0 absorbable or non-absorbable suture to be used as a traction thread, the midpoint of the traction thread is forked to be sent from the tail part of the ligament puncture needle 2 to the outer side of the PCL to form a ferrule, and then the thread passing is pulled to enable the non-absorbable fixation thread to be crossed in a back side ligament 8 character and pass through the proximal tibia double bone tunnels to complete ligament ligation and fixation.

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 thread passing device is characterized by comprising three parts, namely a positioning guide device (1), a ligament puncture needle (2) and a thread passing device (3); the positioning guider (1) comprises a handle (11) and a hollow tube (12), wherein a vertical through hole (13) is formed in the handle; one end of the hollow pipe (12) is sleeved in the through hole (13) of the handle (11), the port of the other end is an arc opening, and a bend is arranged near the port; the ligament puncture needle (2) is a stainless steel hollow tube with one end being a smooth sharp end with a 30-degree inclined plane and toughness; the ligament puncture needle (2) can enter from the tail part of the positioning guider (1) and penetrate out of the hollow tube (12); the thread passing device (3) is a solid stainless steel rib round needle, the tail part of the thread passing device is round and blunt, and the head part of the thread passing device is a Y-shaped opening; the thread passing device (3) can enter from the tail part of the ligament puncture needle (2) and pass out from the head part.

2. The PCL threading device of claim 1, wherein the hollow tube (12) has a length of 200mm, an outer diameter of 3.0mm and a wall thickness of 0.25mm.

3. The PCL threading device of claim 1 or 2, characterized in that a bend of 15-45 degrees is arranged at a position 25mm away from the port of the hollow tube (12).

4. The PCL threading device of claim 1, wherein the handle (11) is a wooden handle.

5. The PCL threading device according to claim 1, wherein the ligament puncture needle (2) has a length of 280mm, an outer diameter of 1.5mm and a wall thickness of 0.15mm.

6. The PCL threading device of claim 1, wherein the length of the threading device (3) is 350mm, and the rod diameter is 0.7mm.

7. The PCL threading device of claim 1, wherein the height of the two arms of the Y-shaped head of the threading device is 2.0mm, and the two arms can accommodate a single 2-0 absorbable or non-absorbable suture.