Bone filling bag belt hot knot shaping assembly

Abstract

The utility model provides a bone filling bag belt hot knot shaping assembly which comprises a fixing shaft used for being sleeved into a bone filling bag belt, a heating assembly comprises an upper fixing piece, a lower fixing piece and two heating rods, a groove is formed in the bottom wall of the upper fixing piece, a first arc-shaped groove is formed in the groove bottom of the groove, and a second arc-shaped groove is formed in the lower wall of the lower fixing piece. The top wall of the lower fixing part is provided with a protrusion capable of being embedded into the groove, the top wall of the protrusion is provided with a second arc-shaped groove, the two heating rods are arranged in the upper fixing part and the lower fixing part respectively, and after the upper fixing part and the lower fixing part are embedded, the diameter of a round hole formed by the first arc-shaped groove and the second arc-shaped groove is larger than that of the fixing shaft. And the outer diameter is smaller than that of the bone filling bag belt. According to the utility model, the flat bone filling bag belt can be expanded while heating, melting and bonding interlacing points of the bone filling bag belt, so that the shaping efficiency is improved. Moreover, the interlacing points of the bone filling bag belts are fixed, so that the shaped bone filling bag belts are not easy to deform, and the size and pores of the bone filling bag belts are more stable.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a bone filling sac with a heat-setting and shaping component. Background Technology

[0002] Bone-filling pouches are products suitable for vertebral compression fractures caused by osteoporosis, providing filling and stabilization of the vertebral body during percutaneous vertebroplasty. Specifically, existing monofilament pouches are woven from polymer materials. During bone cement injection in vertebroplasty, the pouch effectively encapsulates the bone cement, preventing its free flow and distribution, while also allowing the cement to expand and leak out through the pouch's mesh once it reaches its rated capacity, forming protrusions. This satisfies both the need for cement encapsulation and allows for dispersed leakage, creating an anchoring hinge that maintains a certain strength and rigidity in the injured vertebra, thus improving spinal stability.

[0003] However, the monofilament tape is flattened after weaving and must be stretched and shaped to achieve the above functions. The existing method for shaping the monofilament tape is to fit it into a tooling mold and then use hot water for shaping. However, because the monofilament tape has a mesh woven structure and many interlacing points, these interlacing points are easily stretched and deformed by a little external force. Therefore, the existing method has the following drawbacks: the interlacing points of the monofilament tape are not connected and are easily deformed; the monofilament tape is soft and the size is unstable after shaping; the porosity of the monofilament tape is uneven after shaping; and hot water shaping is time-consuming and inefficient. Therefore, the existing shaping method has limitations. Utility Model Content

[0004] This invention was developed to solve the above-mentioned problems, and its purpose is to provide a bone filling capsule with a heat-setting and shaping component.

[0005] This utility model provides a heat-setting and shaping assembly for bone-filled capsules, used for heat-setting bone-filled capsules. It features a fixed shaft with the same inner diameter as the bone-filled capsule for insertion into the capsule. The heating assembly includes an upper fixing member, a lower fixing member, and two heating rods. The upper fixing member has a groove on its bottom wall along its length, with both ends extending to the side walls along its length. A first arc-shaped groove is formed at the bottom of the groove along the length of the upper fixing member. The lower fixing member has a protrusion on its top wall along its length that engages with the groove, with both ends extending to the side walls along its length. A second arc-shaped groove is formed on the top wall of the protrusion along the length of the lower fixing member, opposite to the first arc-shaped groove. The two heating rods are respectively located inside the upper and lower fixing members, with at least one end of each heating rod located outside the upper and lower fixing members.

[0006] When the upper and lower fixation components are fitted together, the diameter of the circular hole formed by the first and second arc-shaped grooves is larger than the diameter of the fixation shaft but smaller than the outer diameter of the bone-filling sac.

[0007] The bone filling bladder with heat-setting and shaping assembly provided by this utility model also has the following features: multiple positioning grooves are respectively opened at the bottom of the groove and on both sides of the first arc-shaped groove, and multiple positioning pins are respectively provided on the raised top wall and on both sides of the second arc-shaped groove. Each positioning pin is correspondingly set with a positioning groove so that it can be engaged with the positioning groove.

[0008] The bone filling sac with heat-setting and shaping assembly provided by this utility model also has the following feature: temperature sensors are provided on the outer walls of the upper and lower fixation members.

[0009] The bone filling sac with heat-setting and shaping component provided by this utility model also has the following feature: the cross-section of both the groove and the protrusion is trapezoidal.

[0010] The bone filling bladder with heat-setting and shaping assembly provided by this utility model also has the following feature: the length of the fixing shaft is greater than the length of the upper fixing member and the lower fixing member.

[0011] Functions and effects of utility models

[0012] The bone-filled capsule heat-setting assembly of this invention aims to heat the upper and lower fixing members with a heating rod before shaping the bone-filled capsule on the fixing shaft. When using this invention to shape the bone-filled capsule, the flattened capsule can be expanded while heating and melting the interlacing points of the capsule, thus improving shaping efficiency. Furthermore, it fixes the interlacing points of the capsule, making the shaped capsule less prone to deformation and resulting in more stable dimensions and porosity. Additionally, the rigidity of the capsule is improved after heat treatment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a bone filling bladder with a heat-setting shaping component according to this utility model;

[0014] Figure 2 This is a front view of a bone filling capsule with a heat-setting shaping component according to the present invention;

[0015] Figure 3 This is a schematic diagram of a partial structure of the bone-filled cyst.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1. Fixed shaft; 2. Upper fixing part; 21. Groove; 22. First arc groove; 23. Positioning groove; 3. Lower fixing part; 31. Protrusion; 32. Second arc groove; 33. Positioning pin; 4. Heating rod; 5. Temperature sensor. Detailed Implementation

[0018] 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.

[0019] Example

[0020] Figure 1 This is a structural schematic diagram of the present invention. Figure 2 This is a front view of the present invention.

[0021] like Figure 1 and Figure 2 As shown, this embodiment provides a bone filling capsule with a heat-setting and shaping component, including: a fixing shaft 1, an upper fixing member 2, a lower fixing member 3, and a heating rod 4.

[0022] like Figure 1 and Figure 2 As shown, the fixing shaft 1 has the same inner diameter as the bone filling capsule and is used to fit inside the bone filling capsule. The diameter of the fixing shaft 1 can be adjusted according to the size of the bone filling capsule to be shaped, so that the bone filling capsule to be shaped can fit tightly against the fixing shaft 1.

[0023] In this embodiment, the length of the fixed shaft 1 is greater than the lengths of the upper fixing member 2 and the lower fixing member 3.

[0024] like Figure 1 and Figure 2 As shown, the heating assembly includes an upper fixing member 2, a lower fixing member 3, and two heating rods 4.

[0025] In this embodiment, a groove 21 is formed on the bottom wall of the upper fixation member 2 along its length. Both ends of the groove 21 extend to the two side walls of the upper fixation member 2 along its length. A first arc-shaped groove 22 is formed at the bottom of the groove 21 along the length of the upper fixation member 2. A protrusion 31, which can fit into the groove 21, is formed on the top wall of the lower fixation member 3 along its length. Both ends of the protrusion 31 extend to the two side walls of the lower fixation member 3 along its length. A second arc-shaped groove 32 is formed on the top wall of the protrusion 31 along the length of the lower fixation member 3. The second arc-shaped groove 32 is positioned opposite to the first arc-shaped groove 22. When the upper fixation member 2 and the lower fixation member 3 are fitted together, the diameter of the circular hole formed by the first arc-shaped groove 22 and the second arc-shaped groove 32 is larger than the diameter of the fixation shaft 1 but smaller than the outer diameter of the bone-filling capsule.

[0026] In this embodiment, the diameter of the circular hole formed by the first arc groove 22 and the second arc groove 32 can be adjusted according to the size of the fixed shaft 1 and the bone filling capsule, so that the inner wall of the circular hole formed by the first arc groove 22 and the second arc groove 32 is in close contact with the bone filling capsule.

[0027] In this embodiment, a plurality of positioning grooves 23 are respectively provided on the bottom of the groove 21 and on both sides of the first arc-shaped groove 22, and a plurality of positioning pins 33 are respectively provided on the top wall of the protrusion 31 and on both sides of the second arc-shaped groove. Each positioning pin 33 is correspondingly provided with a positioning groove 23 so that it can engage with the positioning groove 23.

[0028] In this embodiment, the upper fixing member 2 and the lower fixing member 3 have the same length.

[0029] In this embodiment, the cross-sections of both the groove 21 and the protrusion 31 are trapezoidal.

[0030] In this embodiment, temperature sensors 5 are also provided on the outer walls of the upper fixing member 2 and the lower fixing member 3. In use,

[0031] like Figure 1 and Figure 2 As shown, two heating rods 4 are respectively disposed inside the upper fixing member 2 and the lower fixing member 3, with at least one end of the heating rod 4 located outside the upper fixing member 2 and the lower fixing member 3. The end of the heating rod 4 located outside the upper fixing member 2 and the lower fixing member 3 can be connected to an external power source, thereby enabling the heating rod 4 to heat the upper fixing member 2 and the lower fixing member 3.

[0032] In this embodiment, the heating rod 4 is a commonly used heating rod 4 for heating objects in the prior art. Specifically, the heating rod 4 can be composed of a rod body, resistance wires, and terminals, wherein the resistance wires in the rod body are filled with dense insulating material.

[0033] When using this invention to shape the bone-filled capsule, firstly, the bone-filled capsule is placed on the fixing shaft 1. Then, the bone-filled capsule is placed into the second arc-shaped groove 32 on the lower fixing member 3. Next, the upper fixing member 2 is placed on the lower fixing member 3, and it is confirmed that the first arc-shaped groove 22 on the upper fixing member 2 covers the fixing shaft 1. Because the upper fixing member 2 and the lower fixing member 3 are respectively provided with mutually engaging grooves 21 and protrusions 31, as well as mutually engaging positioning pins 33 and positioning grooves 23, the stability between the upper fixing member 2 and the lower fixing member 3 can be ensured when the upper fixing member 2 is placed on the lower fixing member 3. Then, the upper fixing member 2 and the lower fixing member 3 are heated using a heating rod 4 to heat-shape the bone-filled capsule. Because the interlacing point of the bone-filled capsule is formed by two threads overlapping, the thickness at the interlacing point is greater than the thickness of the rest. Therefore, the upper fixator 2 and lower fixator 3 will preferentially heat-melt the interlacing point, bonding the bone-filled capsule together. Furthermore, since both the upper fixator 2 and lower fixator 3 are equipped with temperature sensors 5, the heating temperature of the upper fixator 2 and lower fixator 3 can be kept at a suitable temperature, preventing damage to the bone-filled capsule due to overheating and ensuring the stability of this invention during use. Finally, the upper fixator 2 is removed from the lower fixator 3, and the bone-filled capsule is removed from the fixing shaft 1, completing the shaping process of the bone-filled capsule. Because the length of the fixing shaft 1 is greater than the lengths of the upper fixator 2 and lower fixator 3, the fixing shaft 1 can be immediately removed from between the upper fixator 2 and lower fixator 3 after heating, avoiding damage to the shaping process of the bone-filled capsule from residual heat.

[0034] The role and effect of the embodiments

[0035] The bone-filled capsule heat-setting assembly of this invention aims to heat the upper and lower fixing members with a heating rod before shaping the bone-filled capsule on the fixing shaft. When using this invention to shape the bone-filled capsule, the flattened capsule can be expanded while heating and melting the interlacing points of the capsule, thus improving shaping efficiency. Furthermore, it fixes the interlacing points of the capsule, making the shaped capsule less prone to deformation and resulting in more stable dimensions and porosity. Additionally, the rigidity of the capsule is improved after heat treatment.

[0036] 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 heat-setting and shaping assembly for bone-filled capsules, used for heat-setting bone-filled capsules, characterized in that, include: A fixed shaft, having the same inner diameter as the bone-filling capsule, is used to fit inside the bone-filling capsule. A heating assembly includes an upper fixing member, a lower fixing member, and two heating rods. The upper fixing member has a groove on its bottom wall along its length, with both ends extending to the side walls along its length. A first arc-shaped groove is formed at the bottom of the groove along the length of the upper fixing member. The lower fixing member has a protrusion on its top wall along its length that can engage with the groove, with both ends extending to the side walls along the length of the lower fixing member. A second arc-shaped groove is formed on the top wall of the protrusion along the length of the lower fixing member. The second arc-shaped groove is opposite to the first arc-shaped groove. The two heating rods are respectively disposed inside the upper and lower fixing members, with at least one end of each heating rod located outside the upper and lower fixing members. Wherein, after the upper fixation member and the lower fixation member are fitted together, the diameter of the circular hole formed by the first arc-shaped groove and the second arc-shaped groove is larger than the diameter of the fixation shaft and smaller than the outer diameter of the bone filling sac.

2. The bone-filled capsule with heat-setting and shaping component according to claim 1, characterized in that: in, The bottom of the groove and the sides of the first arc-shaped groove are provided with a plurality of positioning grooves, and the top wall of the protrusion and the sides of the second arc-shaped groove are provided with a plurality of positioning pins. Each positioning pin is provided in correspondence with a positioning groove so that it can engage with the positioning groove.

3. The bone-filled capsule with heat-setting and shaping component according to claim 1, characterized in that: in, Temperature sensors are also provided on the outer walls of the upper and lower fixing components.

4. The bone-filled capsule with heat-setting and shaping component according to claim 1, characterized in that: in, Both the groove and the protrusion have trapezoidal cross-sections.

5. The bone-filling capsule with heat-setting and shaping component according to claim 1, characterized in that: in, The length of the fixed shaft is greater than the lengths of the upper fixing member and the lower fixing member.

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