CN219782853U - Joint capsule repairing device - Google Patents

Abstract

The utility model discloses a joint capsule repairing device, which belongs to the technical field of orthopedic implants and comprises a herringbone body, wherein the connecting ends of two branches of the herringbone body are provided with first fixing ends, the first fixing ends are femur fixing ends, the tail ends of the two branches of the herringbone body are provided with second fixing ends, and the second fixing ends are joint capsule fixing ends or acetabulum fixing ends. The joint capsule repairing device can be suitable for stable reconstruction of the hip joint replacement joint, solves the problem of damage to the stable structure of the hip joint replacement operation, can recover the stable structure of the hip joint, and has large joint and healing area of the herringbone body and the bone, and firm fixation and healing.

Description

joint capsule repair device

Technical field

The utility model relates to the technical field of orthopedic implants, in particular to a joint capsule repair device.

Background technique

The hip joint of the human body mainly refers to the connection between the proximal end of the femur and the pelvis. It is composed of the acetabulum and the femoral head, and is surrounded by joint capsules, muscles and other tissues. The joint capsule restrains the hip joint and maintains joint stability. Because the human hip joint is a large joint and requires frequent weight-bearing activities, it is prone to many kinds of pathologies. If the pathologies are severe, hip replacement surgery is required.

During hip replacement surgery, the joint capsule on one side (anterior joint capsule or posterior joint capsule) is usually peeled off, cut off or removed from the bone surface. After the prosthesis is implanted, dislocation is easy to occur due to loss of restraint of the joint capsule. The current method of rebuilding joint stability is to sew the remaining joint capsule and the external rotator muscles, and then punch holes and thread sutures in the proximal trochanter area of the femur. This method has the following disadvantages: 1. The suture site is not secure and the punch site is easy to tear. Dislocated fracture cannot provide satisfactory stability; 2. The joint capsule and external rotator muscles are in poor contact with the femur and cannot form good healing; 3. The joint capsule and external rotator muscles are contracted and cannot be sutured to the femur after the joint returns to its normal structure. Rotor, or easy to tear off after forced suturing.

There are currently no products on the market for stable reconstruction of hip replacement joints. Therefore, there is an urgent need to provide a joint capsule repair device suitable for stable reconstruction of hip replacement joints to provide satisfactory stability.

Utility model content

The technical problem to be solved by this utility model is to provide a joint capsule repair device suitable for stable reconstruction of hip joint replacement joints.

In order to solve the above technical problems, the present utility model provides the following technical solutions:

A joint capsule repair device includes a herringbone body. The connecting end of two branches of the herringbone body is provided with a first fixed end, and the first fixed end is a femoral fixed end. The herringbone body The ends of the two branches are provided with second fixed ends, and the second fixed ends are joint capsule fixed ends or acetabular fixed ends.

Further, one branch of the herringbone body conforms to the anatomical distribution of the iliofemoral ligament, and the other branch conforms to the anatomical distribution of the ischiofemoral ligament.

Further, the femoral fixed end conforms to the anatomical characteristics behind the pyriform fossa of the greater trochanter of the femur.

Further, the femoral fixed end is directly passed through by a suture needle to fix the femoral fixed end to the femoral bone surface;

Alternatively, the femoral fixed end is prefabricated with at least one row of bottom holes for fixing nails or fixing wires to pass through, so as to fix the femoral fixed end to the femoral bone surface;

Alternatively, the femoral fixed end is integrally connected with a fixing nail and a fixing wire to fix the femoral fixed end to the femoral bone surface.

Further, the second fixed end is a joint capsule fixed end, wherein:

The fixed end of the joint capsule is directly passed through by a suture needle to suture and fix the fixed end of the joint capsule with the joint capsule;

Alternatively, at least one row of bottom holes for suture needles to pass through is preformed on the fixed end of the joint capsule to suture and fix the fixed end of the joint capsule to the joint capsule.

Further, the second fixed end is an acetabular fixed end, wherein:

The acetabular fixed end is directly passed through by a suture needle to fix the acetabular fixed end to the bony surface of the acetabular wall;

Alternatively, the acetabular fixed end is prefabricated with at least one row of bottom holes for fixing nails or fixing wires to pass through to fix the acetabular fixed end to the bony surface of the acetabular wall;

Alternatively, the acetabular fixed end is integrally connected with a fixing nail and a fixing wire to fix the acetabular fixed end to the bony surface of the acetabular wall.

Further, the herringbone body is made of soft material with a certain strength;

Alternatively, the herringbone body part has a knitted structure, and a number of knitted holes are formed on its surface.

Further, the herringbone body part is made of absorbable material.

Further, the herringbone body has a single structure in its thickness direction;

Alternatively, the herringbone body part has a layered structure in its thickness direction, and the layered structures are connected into a single structure through processing, stitching, bonding, heat treatment or welding.

Further, the overall shape of the joint capsule repair device is imitation fusiform or rectangular or circular or oval;

And/or, both the first fixed end and the second fixed end have a knitted hole structure.

The utility model has the following beneficial effects:

The joint capsule repair device of the present invention includes a herringbone body. The connecting end of the two branches of the herringbone body is provided with a first fixed end. The first fixed end is a femoral fixed end. The two branches of the herringbone body are The end is provided with a second fixed end, and the second fixed end is a joint capsule fixed end or an acetabular fixed end. Since it adopts a herringbone body and has a first fixed end and a second fixed end, it can be suitable for hip joint replacement and joint stability. Reconstruction solves the problem of damage to the stable structure of the hip joint replacement surgery and restores the stable structure of the hip joint. The herringbone body fits the bone and has a large healing area, making the fixation and healing firm. It also compensates for soft tissue contracture and defects. , can achieve tension-free reconstruction, avoiding the shortcomings of excessive tension, weak sutures, and poor contact that often occur in traditional soft tissue reconstruction.

Description of the drawings

Figure 1 is a schematic front view of the joint capsule repair device of the present invention;

Figure 2 is a side view of Figure 1;

Figure 3 is an enlarged schematic diagram of the knitted structure of the herringbone body in Figure 1;

FIG. 4 is an enlarged schematic view of the outer surface of the herringbone body in FIG. 1 .

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present utility model clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

The utility model provides a joint capsule repair device, as shown in Figures 1-4, including a herringbone body 1. The connecting end of two branches of the herringbone body 1 is provided with a first fixed end 2. The first fixed end 2 is a fixed end of the femur, and the ends of the two branches of the herringbone body 1 are provided with a second fixed end 3, and the second fixed end 3 is a fixed end of the joint capsule or an acetabulum.

The joint capsule repair device of the present invention includes a herringbone body. The connecting end of the two branches of the herringbone body is provided with a first fixed end. The first fixed end is a femoral fixed end. The two branches of the herringbone body are The end is provided with a second fixed end, and the second fixed end is a joint capsule fixed end or an acetabular fixed end. Since it adopts a herringbone body and has a first fixed end and a second fixed end, it can be suitable for hip joint replacement and joint stability. Reconstruction solves the problem of damage to the stable structure of the hip joint replacement surgery and restores the stable structure of the hip joint. The herringbone body fits the bone and has a large healing area, making the fixation and healing firm. It also compensates for soft tissue contracture and defects. , can achieve tension-free reconstruction, avoiding the shortcomings of excessive tension, weak sutures, and poor contact that often occur in traditional soft tissue reconstruction.

The herringbone body 1 in the present utility model adopts a herringbone shape based on the anatomical characteristics of the joint capsule, the anatomical distribution of the iliofemoral ligament and the ischiofemoral ligament, and imitates the course of the physiological ligaments, and can be thickened locally to form Similar to the thick part (thickened area) of the ligament, during specific implementation, one branch of the herringbone body 1 can conform to the anatomical distribution of the iliofemoral ligament, and the other branch conforms to the anatomical distribution of the ischiofemoral ligament; herringbone body 1 The herringbone body 1 may be in an inwardly curved arc along the length direction of the second fixed end 3 for better application. Stable reconstruction at the back of the hip joint for more reliable fixation and healing. The fixed end of the femur should preferably conform to the anatomical characteristics behind the pyriform fossa of the greater trochanter of the femur, so that the fixed end of the femur can adhere better to the bone surface, and the fixation and healing can be more reliable.

In order to fix the femoral fixed end to the femoral bone surface, the utility model can have the following structural forms:

Structural form 1: The fixed end of the femur can be directly penetrated by the suture needle to fix the fixed end of the femur to the bony surface of the femur;

Structural form two: The femoral fixed end can be prefabricated with at least one row of bottom holes 5 for the fixation nails 4 or fixation wires to pass through, so as to fix the femoral fixed end to the femoral bone surface;

Structural form three: The fixed end of the femur can be integrally connected with the fixing nail 4 and the fixing wire to fix the fixed end of the femur to the bone surface of the femur.

According to the difference of the second fixed end 3, the present utility model can have the following embodiments:

Example 1

The second fixed end 3 may be a joint capsule fixed end. In order to suture and fix the fixed end of the joint capsule to the joint capsule, this embodiment may have the following structural forms:

Structural form 4: The fixed end of the joint capsule can be directly passed through by a suture needle to suture and fix the fixed end of the joint capsule to the joint capsule, or sutured with a specially designed suture device;

Structural form 5: The fixed end of the joint capsule can be prefabricated with at least one row of bottom holes 5 for suture needles to pass through, so as to suture and fix the fixed end of the joint capsule to the joint capsule.

Example 2

The second fixed end 3 may be an acetabular fixed end. In order to fix the acetabular fixed end to the bony surface of the acetabular wall, this embodiment may have the following structural forms:

Structural form 6: The acetabular fixed end can be directly penetrated by a suture needle to fix the acetabular fixed end to the bony surface of the acetabular wall;

Structural form 7: The acetabular fixed end can be prefabricated with at least one row of bottom holes 5 for the fixation nails 4 or fixation wires to pass through, so as to fix the acetabular fixed end to the bone surface of the acetabular wall;

Structural form 8: The fixed end of the acetabulum can be integrally connected with the fixing nail 4 and the fixing wire to fix the fixed end of the acetabulum to the bony surface of the acetabular wall. The acetabular fixed end in this embodiment can be a substitute for the joint capsule fixed end in Embodiment 1, and is used when the joint capsule is completely cut off and suture fixation of the joint capsule cannot be performed.

In the following, the present utility model takes the femoral fixed end using the fixation nail 4 with a fixation line of structural form 3 and the related joint capsule fixed end as an example. The implantation process is as follows:

After the joint replacement is completed, the femur is dislocated, and a row of fixation nails 4 are first implanted at a suitable position behind the pyriform fossa of the proximal femur, and the fixation wire is passed through the femoral fixation end of the joint capsule repair device of the present invention, and the fixation wire is first Do not tighten the knot, then reduce the joint, free the joint capsule appropriately, put the reconstruction device in place, and perform at least 2 rows of suture fixation according to the overlap of the joint capsule and the fixed end of the joint capsule, and then tighten the fixation line of the fixed end of the femur. Tightly knot the fixation. When it is necessary to fix the second row of fixing nails 4 on the fixed end of the femur, pull the tail of the fixed end of the femur to cover the bone surface behind the femur, and then fix the fixing nails 4 at the corresponding position and connect it to the first row. The fixation wire of the fixation nail 4 is tightened and fixed so that the fixed end of the femur is in surface contact with the bone surface and the implantation is completed.

When an acetabular fixed end is used, the fixation mode of the joint capsule fixed end is changed to fixing at least one row of fixing nails 4 and fixing wires on the acetabular side bone.

In the present utility model, the herringbone body 1 can be made of soft material with a certain strength; the herringbone body 1 is preferably a knitted structure (see Figure 3), with a number of knitted holes formed on its surface to provide space for the growth of cells and collagen fibers. The scaffold eventually grows into one body with the soft tissue. The herringbone body part 1 can be made of absorbable material (see Figure 4), which provides stability in the early postoperative period and will be absorbed by itself after the soft tissue heals.

The herringbone body part 1 may have a single structure in its thickness direction; the herringbone body part 1 may also have a layered structure in its thickness direction, and the layered structures are connected into a single structure through processing, stitching, bonding, heat treatment or welding. structure.

The overall shape of the joint capsule repair device can be common shapes such as imitation fusiform, rectangular, circular, or oval, and there are different models to meet surgical needs. The surface of the herringbone body 1 or the knitted holes can be filled with supplements, whose functions include stimulating tissue ingrowth, promoting tissue regeneration, preventing infection at the surgical site, etc. Both the first fixed end 2 and the second fixed end 3 can have a knitted hole structure to facilitate better bone/joint capsule ingrowth. The knitted hole structure at the first fixed end 2 and the second fixed end 3 is consistent with the herringbone structure. The knitted holes of the body part 1 can be the same or different, and can be a holed hemp surface or a knitted surface instead of a smooth surface.

The above is the preferred embodiment of the present utility model. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications can be made without departing from the principles described in the present utility model. These improvements and Retouching should also be considered as the protection scope of this utility model.

Claims (10)

1. A joint capsule repair device, characterized in that it includes a herringbone body, the connecting end of two branches of the herringbone body is provided with a first fixed end, and the first fixed end is a femoral fixed end, The ends of the two branches of the herringbone body are provided with second fixed ends, and the second fixed ends are joint capsule fixed ends or acetabular fixed ends. 2. The joint capsule repair device according to claim 1, wherein one branch of the herringbone body conforms to the anatomical distribution of the iliofemoral ligament, and the other branch conforms to the anatomical distribution of the ischiofemoral ligament. 3. The joint capsule repair device according to claim 1, wherein the femoral fixed end conforms to the anatomical characteristics behind the pyriform fossa of the greater trochanter of the femur. 4. The joint capsule repair device according to claim 1, wherein the femoral fixed end is directly penetrated by a suture needle to fix the femoral fixed end to the femoral bone surface; Alternatively, the femoral fixed end is prefabricated with at least one row of bottom holes for fixing nails or fixing wires to pass through, so as to fix the femoral fixed end to the femoral bone surface; Alternatively, the femoral fixed end is integrally connected with a fixing nail and a fixing wire to fix the femoral fixed end to the femoral bone surface. 5. The joint capsule repair device according to claim 1, wherein the second fixed end is a joint capsule fixed end, wherein: The fixed end of the joint capsule is directly passed through by a suture needle to suture and fix the fixed end of the joint capsule with the joint capsule; Alternatively, at least one row of bottom holes for suture needles to pass through is preformed on the fixed end of the joint capsule to suture and fix the fixed end of the joint capsule to the joint capsule. 6. The joint capsule repair device according to claim 1, wherein the second fixed end is an acetabular fixed end, wherein: The acetabular fixed end is directly passed through by a suture needle to fix the acetabular fixed end to the bony surface of the acetabular wall; Alternatively, the acetabular fixed end is prefabricated with at least one row of bottom holes for fixing nails or fixing wires to pass through to fix the acetabular fixed end to the bony surface of the acetabular wall; Alternatively, the acetabular fixed end is integrally connected with a fixing nail and a fixing wire to fix the acetabular fixed end to the bony surface of the acetabular wall. 7. The joint capsule repair device according to claim 1, wherein the herringbone body is made of soft material with a certain strength; Alternatively, the herringbone body part has a knitted structure, and a number of knitted holes are formed on its surface. 8. The joint capsule repair device according to claim 1, wherein the herringbone body is made of absorbable material. 9. The joint capsule repair device according to claim 1, wherein the herringbone body is a single structure in its thickness direction; Alternatively, the herringbone body part has a layered structure in its thickness direction, and the layered structures are connected into a single structure through processing, stitching, bonding, heat treatment or welding. 10. The joint capsule repair device according to claim 1, characterized in that the overall shape of the joint capsule repair device is a fusiform, rectangular, circular or oval shape; And/or, both the first fixed end and the second fixed end have a knitted hole structure.