Bone cement bag for enhancing osseointegration

Abstract

The utility model provides a bone cement bag for enhancing osseointegration, which comprises a fusiform tubular bag body, the bag body is formed by weaving warp yarns and weft yarns, the bag body is provided with plain weave sections positioned at two ends of the bag body and a two-warp cross weaving section positioned in the middle of the bag body, one end of the bag body is provided with a tightening ring for tightening an opening of the bag body, and the other end of the bag body is provided with a fastening ring for fastening the opening of the bag body. The other end of the bag body is provided with a fixing ring for fixing the opening of the bag body, so that the other end of the bag body is conveniently connected with a sleeve of a bone cement filler, and bone cement is conveniently injected. The bone cement in the bag body can be limited to flow in the plain weave section with the large density, it is ensured that the bone cement is filled into the position needing to be fixed, the bone cement in the bag body can allow part of the bone cement to permeate out of the bag body in the two-warp cross weaving section with the small density due to the fact that the hole diameter of the bone cement is large, and therefore the bone cement can be fixed to the position needing to be fixed. Therefore, the bone cement is in direct contact with surrounding bones before solidification, and the growth of bone tissues and the integration effect of the bone cement are promoted.

Description

Technical Field

[0001] This utility model relates to the field of implantable medical device technology, specifically to a bone cement bag that enhances osseointegration. Background Technology

[0002] Bone cement is a material used in orthopedic surgery. Its mechanism of action involves physically embedding implants into the bone. After being injected into the fracture or joint replacement site, bone cement hardens rapidly and fills the gaps in the bone, thus providing stable support for the implant. Bone cement pockets are auxiliary instruments used in orthopedic surgery, commonly used in procedures such as vertebroplasty, kyphosis correction, and hip replacement.

[0003] The primary function of a bone cement pocket is to guide the flow of bone cement by providing a sealed space, ensuring its accurate positioning at the surgical site and preventing it from flowing into unwanted areas such as the spinal cord, blood vessels, nerves, or surrounding soft tissues. This reduces the incidence of common postoperative complications such as pain and infection. Furthermore, the bone cement pocket helps distribute the bone cement evenly throughout the lesion area, ensuring coverage of the entire fracture site, especially in areas with irregular bone structures or complex anatomy. Additionally, the bone cement pocket helps form the necessary support structure; after the bone cement hardens, it enhances the strength of the cement, increases the stability of the surgical site, and reduces the risk of further fractures. Therefore, bone cement pockets offer numerous advantages in orthopedic surgery.

[0004] However, bone cement pockets also have some limitations. For example, because a bone cement pocket acts as an isolation barrier, it may hinder direct contact between the bone cement and the surrounding bone tissue, and to some extent restrict the migration of osteocytes to the surface of the bone cement or prosthesis, thereby affecting the speed and quality of osseointegration. Utility Model Content

[0005] This invention was developed to solve the above-mentioned problems, and its purpose is to provide a bone cement sac that enhances osseointegration.

[0006] This invention provides a bone cement capsule for enhancing osseointegration, characterized by: a fusiform tubular capsule body woven from warp and weft yarns, having plain weave sections at both ends and a two-warp twisted section in the middle. The plain weave sections have a warp density of 63 yarns / inch and a weft density of 42 yarns / inch, while the two-warp twisted section has a warp density of 63 yarns / inch and a weft density of 11 yarns / inch. One end of the capsule body is provided with a tying ring for securing its opening, and the other end is provided with a fixing ring for fixing its opening, thereby facilitating the connection between the other end of the capsule body and the bone cement filler sleeve, thus facilitating the injection of bone cement; wherein the length ratio of the plain weave sections at both ends to the two-warp twisted section in the middle of the capsule body is 1:1:1 to 1:3:1.

[0007] The bone cement bag for enhancing osseointegration provided by this utility model can also have the following characteristics: the warp and weft yarns are made of polyethylene terephthalate, polyurethane, polytetrafluoroethylene, polypropylene (PP), polylactic acid, polyglycolic acid, or polyethylene glycol.

[0008] The bone cement sac for enhancing osseointegration provided by this utility model can also have the following features: the fixation ring and the tightening ring are made of titanium and titanium alloy, nickel-titanium alloy, cobalt-chromium alloy, zirconium and zirconium alloy, gold-platinum alloy, tantalum, magnesium alloy, or medical stainless steel.

[0009] Functions and effects of utility models

[0010] According to the bone cement bag for enhancing osseointegration involved in this utility model, because it has plain weave sections at both ends and a two-warp twisted section in the middle, and the warp density of the plain weave section is 63 threads / inch and the weft density is 42 threads / inch, and the warp density of the two-warp twisted section is 63 threads / inch and the weft density is 11 threads / inch, the bone cement in the bag body is restricted from flowing in the denser plain weave section, ensuring that the bone cement fills the parts that need to be fixed. In the less dense two-warp twisted section, the bone cement in the bag body is allowed to permeate out of the bag body due to its larger pore size, so that the bone cement can directly contact the surrounding bone before solidification, promoting bone tissue growth and the integration effect of bone cement, thereby ensuring the practical effect of this utility model. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of a partial tissue structure of the sac body in this utility model.

[0013] Explanation of reference numerals in the attached figures:

[0014] 1. Bag body; 11. Plain weave section; 12. Two-warp twisted weave section; 2. Fixing ring; 3. Tightening ring. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easy to understand, the following embodiments are described in detail with reference to the accompanying drawings.

[0016] Example

[0017] Figure 1 This is a structural schematic diagram of the present invention. Figure 2 This is a schematic internal cross-sectional view of the present invention.

[0018] like Figure 1 and Figure 2 As shown, this embodiment provides a bone cement bag for enhancing osseointegration, including: a bag body 1, a fixation ring 2, and a tightening ring 3.

[0019] like Figure 1 and Figure 2 As shown, the pouch body 1 is woven from warp and weft yarns. The pouch body 1 has plain weave sections 11 at both ends and a two-warp twisted section 12 in the middle. The warp density of the plain weave section 11 is 63 threads / inch and the weft density is 42 threads / inch. The warp density of the two-warp twisted section 12 is 63 threads / inch and the weft density is 11 threads / inch. One end of the pouch body 1 has a tightening ring 3 for securing its opening, and the other end has a fixing ring 2 for fixing its opening, thus facilitating the connection between the other end of the pouch body 1 and the bone cement filler sleeve, thereby facilitating the injection of bone cement. The length ratio of the plain weave section 11 at both ends to the two-warp twisted section 12 in the middle of the pouch body 1 is 1:1:1 to 1:3:1.

[0020] In this embodiment, the pouch body 1 is woven by a special rapier loom using warp and weft yarns.

[0021] In this embodiment, the warp and weft yarns are made of polyethylene terephthalate, polyurethane, polytetrafluoroethylene, polypropylene (PP), polylactic acid, polyglycolic acid, or polyethylene glycol. Preferably, the warp yarn is made of 30D polyethylene terephthalate, and the weft yarn is made of 20D polyethylene terephthalate.

[0022] In this embodiment, the fixing ring 2 and the tightening ring 3 are made of titanium and titanium alloy, nickel-titanium alloy, cobalt-chromium alloy, zirconium and zirconium alloy, gold-platinum alloy, tantalum, magnesium alloy, or medical stainless steel.

[0023] In this embodiment, the tightening ring 3 is preferably formed by a metal wire of tantalum metal wrapped tightly around the outer periphery of one end opening of the bag body 1; the fixing ring 2 is preferably a fixing ring 2 made of medical stainless steel.

[0024] When using the bone cement capsule of this invention to enhance osseointegration for treatment, because the plain weave section 11 has a warp density of 63 threads / inch and a weft density of 42 threads / inch, and the two-warp twisted section 12 has a warp density of 63 threads / inch and a weft density of 11 threads / inch, the plain weave section 11 of the capsule body 1 has a relatively high density, low porosity, and small pore size, resulting in minimal bone cement leakage. This allows it to primarily guide the flow of bone cement, ensuring precise positioning of the bone cement in critical areas. Conversely, the two-warp twisted section 12 of the capsule body 1 has a low density, high porosity, and large pore size, resulting in a large amount of bone cement permeation. This allows the bone cement to permeate out of the capsule before solidification, directly contacting the bone tissue and promoting osseointegration. Therefore, this invention can be used in orthopedic filling and fixation surgeries, especially vertebroplasty, kyphosis correction, and hip replacement surgery, ensuring its practical effectiveness.

[0025] The role and effect of the embodiments

[0026] According to the bone cement bag for enhancing osseointegration involved in this utility model, because it has plain weave sections at both ends and a two-warp twisted section in the middle, and the warp density of the plain weave section is 63 threads / inch and the weft density is 42 threads / inch, and the warp density of the two-warp twisted section is 63 threads / inch and the weft density is 11 threads / inch, the bone cement in the bag body is restricted from flowing in the denser plain weave section, ensuring that the bone cement fills the parts that need to be fixed. In the less dense two-warp twisted section, the bone cement in the bag body is allowed to permeate out of the bag body due to its larger pore size, so that the bone cement can directly contact the surrounding bone before solidification, promoting bone tissue growth and the integration effect of bone cement, thereby ensuring the practical effect of this utility model.

[0027] The above embodiments are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model.

Claims

1. A bone cement pocket for enhanced osseointegration, characterized in that, include: The sac-like body is fusiform and tubular. The bag body is woven from warp and weft yarns. The bag body has plain weave sections at both ends and a two-warp twisted section in the middle. The warp density of the plain weave section is 63 yarns / inch and the weft density is 42 yarns / inch. The warp density of the two-warp twisted section is 63 yarns / inch and the weft density is 11 yarns / inch. One end of the bag body is provided with a tying ring for tightening its opening, and the other end is provided with a fixing ring for fixing its opening, so as to facilitate the connection of the other end of the bag body to the bone cement filler sleeve, thereby facilitating the injection of bone cement. The length ratio of the plain weave section at both ends to the two warp twisted section in the middle of the bag body is 1:1:1 to 1:3:1.

Images