Integrated bone cement reinforced suture anchor

Abstract

The utility model belongs to the technical field of medical equipment, and particularly discloses an integrated bone cement reinforced suture anchor which comprises a suture anchor body and a hollow rod body, the suture anchor body is of a hollow structure, a first opening is formed in the bottom of the suture anchor body, and a plurality of holes used for discharging bone cement are formed in the side wall of the suture anchor body; the bottom of the suture anchor body is fixed to one side of the hollow rod body, and the first opening is communicated with an inner cavity of the hollow rod body; and the other side of the hollow rod body is used for placing bone cement. According to the suture anchor, the hole is additionally formed in the suture anchor body and used for discharging the bone cement, filling of the bone cement can be rapidly completed while the suture anchor is placed, the smoothness and efficiency of an operation are greatly improved, and meanwhile the operation process of a doctor is greatly simplified.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to an integrated bone cement reinforced suture anchor. Background Art

[0002] Suture anchors are medical devices used in orthopedic surgery. The surgeon inserts the suture anchor at the attachment point, passes the high-strength suture attached to the anchor through the damaged tendon or ligament, and tightens the suture to complete tendon and ligament reconstruction. However, in patients with osteoporosis, the bone anchoring force of the suture anchor is weak, making it prone to loosening and dislodgement. Using bone cement injection to enhance the mechanical connection between the bone anchors is a possible solution. This technique is commonly used in spinal surgery, such as cement augmentation of pedicle screws, especially in patients with osteoporosis or poor bone quality. Bone cement (the material used in bone cement anchors) is actually a self-setting polymethyl methacrylate (PMMA) resin that rapidly solidifies in the body to form a plastic-like solid. It is used as a perfusate to fill the gap between the bone and the implant, and after solidification, it forms a solid interface, thus anchoring the implant. During surgery, the surgeon first injects liquid bone cement into the desired location. As the bone cement gradually solidifies, it anchors the surrounding implant. Bone cement also helps distribute the load across the implant, reducing the risk of fracture.

[0003] Currently, the use of bone cement injection to reinforce suture anchors has not been clinically applied. Traditionally, bone cement reinforcement involves pre-drilling the suture channel, injecting bone cement, and then screwing in the suture anchor. The technical difficulties of this method are: 1. The arthroscopic procedure is complex and requires high technical skills, significantly slowing the surgical process. 2. The injection dose of bone cement cannot be controlled in real time, resulting in a high risk of cement leakage. Utility Model Content

[0004] The purpose of the present utility model is to provide an integrated bone cement reinforced suture anchor. By adding holes on the suture anchor for discharging bone cement, bone cement filling can be quickly completed while the nail is placed, which greatly improves the fluency and efficiency of the operation and greatly simplifies the doctor's operation process.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present invention is: an integrated bone cement reinforced suture anchor, comprising a suture anchor body and a hollow rod body, the suture anchor body is a hollow structure and has a first opening at the bottom, and the side wall of the suture anchor body is provided with a plurality of holes for discharging bone cement; the bottom of the suture anchor body is fixed to one side of the hollow rod body, and the first opening is connected to the internal cavity of the hollow rod body; the other side of the hollow rod body is used for inserting bone cement.

[0006] Furthermore, a handle is connected to a side of the hollow rod away from the suture anchor body, and a channel communicating with the interior of the hollow rod is provided in the handle, and the channel is opposite to the internal cavity of the hollow rod.

[0007] Furthermore, a reaming hole is provided on one side of the hollow rod body close to the suture anchor body, and the bottom of the suture anchor body is installed in the reaming hole.

[0008] Furthermore, a funnel-shaped hollow closing structure is provided in the internal cavity of the hollow rod body, the large diameter end of the hollow closing structure is fixed to the internal cavity of the hollow rod body, and the small diameter end of the hollow closing structure extends into the first opening.

[0009] Furthermore, a flared structure is provided on a side of the channel away from the hollow rod body, and a small-diameter end of the flared structure is connected to the channel.

[0010] Furthermore, the bottom of the suture anchor body is a raised structure, which is installed in the expanded hole; ears are provided on both sides of the raised structure, and through holes for installing high-strength sutures are provided on the ears; second openings are provided on both sides of the expanded hole, and the ears can extend from the second openings.

[0011] The working principle of this technical solution is as follows: during specific use, the surgeon first implants the suture anchor body into the designated area using the handle, then places the pre-prepared bone cement into the flared structure at the end of the handle, and then inserts the push rod from the flared structure into the hollow rod body, pushing the bone cement through the hollow rod body into the suture anchor body. By continuously pushing the rod, the bone cement in the suture anchor body is pushed into the bone tissue through the holes in the side wall, completing the implantation of the bone cement. After that, the suturing operation can be carried out.

[0012] The beneficial effects of this technical solution are:

[0013] ① In this technical solution, by adding holes on the suture anchor body for discharging bone cement, bone cement filling can be completed quickly while the nail is placed, which greatly improves the smoothness and efficiency of the operation and greatly simplifies the doctor's operation process.

[0014] ② In this technical solution, a funnel-shaped hollow closing structure is provided in the internal cavity of the hollow rod body, which enables the bone cement in the hollow rod body to be smoothly filled into the interior of the suture anchor body.

[0015] ③ In this technical solution, a flared structure is set at the tail of the handle, which allows the surgeon to easily and accurately inject bone cement into the channel. This not only greatly simplifies the operation process, but also improves the accuracy and efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the utility model's integrated bone cement reinforced suture anchor;

[0017] Figure 2 for Figure 1 The main view;

[0018] Figure 3 Schematic diagram of the structure of the suture anchor body;

[0019] Figure 4 is a schematic diagram of the connection between the suture anchor body and the hollow rod;

[0020] Figure 5 for Figure 2 sectional view of

[0021] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0022] Figure 7 for Figure 5 Enlarged view of point B in the middle. DETAILED DESCRIPTION

[0023] The following is further described in detail through specific implementation methods:

[0024] The reference numerals in the drawings of the specification include: handle 1, hollow rod 2, suture anchor body 3, hole 4, reaming 5, hollow closing structure 6, internal chamber 7, flaring structure 8, ear 9, through hole 10, and protruding structure 11.

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] The embodiment is basically as shown in the attached Figure 1-7 Shown: One-piece bone cement reinforced suture anchor, such as Figure 1 、 2 , 5, including a suture anchor body 3, a hollow rod 2 (specifically a metal rod) and a handle 1, as shown Figure 3 、 4As shown in Figures 6 and 7, the suture anchor body 3 is a hollow structure with a first opening at the bottom. The sidewalls of the suture anchor body 3 are provided with several holes 4 for discharging bone cement. The bottom of the suture anchor body 3 is a raised structure 11, with lugs 9 on either side. Each lug 9 has a through-hole 10 for receiving high-strength sutures. The bottom of the suture anchor body 3 is fixed to the front end of the hollow rod 2, and the first opening is connected to the internal chamber 7 of the hollow rod 2. Specifically, the front end of the hollow rod 2 is provided with a reamer 5 that communicates with the internal chamber 7. The raised structure 11 is mounted within the reamer 5. The reamer 5 is provided with second openings on either side, through which the lugs 9 can extend. A funnel-shaped hollow closing structure 6 is provided within the internal chamber 7 of the hollow rod 2. The large-diameter end of the hollow closing structure 6 is fixed to the internal chamber 7 of the hollow rod 2, and the small-diameter end of the hollow closing structure 6 extends from the first opening into the suture anchor body 3. The tail of the hollow rod body 2 is connected to the handle 1, and a channel is provided in the handle 1 to communicate with the interior of the hollow rod body 2, and the channel is directly opposite to the internal chamber 7 of the hollow rod body 2. Figure 7 As shown, a flared structure 8 is provided on the side of the channel away from the hollow rod 2, and the smaller diameter end of the flared structure 8 is connected to the channel. In the actual connection process, the hollow rod 2 can be directly fixed to the front end of the handle 1, with the internal chamber 7 facing the channel; or the tail of the hollow rod 2 (the outer diameter at the tail is smaller than the outer diameter of the middle part) can be inserted into the channel and extended to the smaller diameter end of the flared structure 8.

[0027] The specific implementation process is as follows:

[0028] During use, the operator first implants the suture anchor body 3 into the designated area using the handle 1, then places the pre-prepared bone cement into the flared structure 8 at the rear end of the handle 1, and then inserts the push rod from the flared structure 8 into the hollow rod body 2, pushing the bone cement through the hollow rod body 2 into the suture anchor body 3. By continuously pushing the rod, the bone cement in the suture anchor body 3 is pushed into the bone tissue through the hole 4 on the side wall, completing the implantation of the bone cement. After that, the suturing operation can be performed.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0030] The above is only an embodiment of the present utility model. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the scope of protection of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. One-piece bone cement reinforced suture anchor, characterized by: The invention comprises a suture anchor body (3) and a hollow rod body (2); the suture anchor body (3) is a hollow structure and is provided with a first opening at the bottom; the side wall of the suture anchor body (3) is provided with a plurality of holes (4) for discharging bone cement; the bottom of the suture anchor body (3) is fixed to one side of the hollow rod body (2), and the first opening is communicated with the internal chamber (7) of the hollow rod body (2); the other side of the hollow rod body (2) is used for inserting bone cement.

2. The integrated bone cement reinforced suture anchor according to claim 1, characterized in that: A handle (1) is connected to the side of the hollow rod (2) away from the suture anchor body (3); a channel communicating with the interior of the hollow rod (2) is provided in the handle (1), and the channel is directly opposite to the internal chamber (7) of the hollow rod (2).

3. The integrated bone cement reinforced suture anchor according to claim 1, characterized in that: A reaming hole (5) is provided on one side of the hollow rod body (2) close to the suture anchor body (3), and the bottom of the suture anchor body (3) is installed in the reaming hole (5).

4. The integrated bone cement reinforced suture anchor according to claim 1, characterized in that: A funnel-shaped hollow closing structure (6) is provided in the internal chamber (7) of the hollow rod body (2); the large-diameter end of the hollow closing structure (6) is fixed to the internal chamber (7) of the hollow rod body (2), and the small-diameter end of the hollow closing structure (6) extends into the first opening.

5. The integrated bone cement reinforced suture anchor according to claim 2, characterized in that: A flared structure (8) is provided on a side of the channel away from the hollow rod body (2), and a small-diameter end of the flared structure (8) is connected to the channel.

6. The integrated bone cement reinforced suture anchor according to claim 3, characterized in that: The bottom of the suture anchor body (3) is a raised structure (11), and the raised structure (11) is installed in the expanded hole (5); both sides of the raised structure (11) are provided with support ears (9), and the support ears (9) are provided with through holes (10) for installing high-strength sutures; and second openings are provided on both sides of the expanded hole (5), and the support ears (9) can extend from the second openings.

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