A hollow rivet riveting structure fixing device

Abstract

The utility model relates to medical instrument technical field discloses a hollow nail riveting structure fixing device, including hollow nail body and be used for driving hollow nail body's driver, the hollow nail body includes first end, center end and end, and the smooth connection between first end, center end and end, and the diameter of center end, first end and end three gradually increases, the surface of hollow nail body is equipped with center hole. This hollow nail riveting structure fixing device, through the driver will hollow nail body place into the position needing to fill the bone cement of bone loose, through the first external thread of hollow nail body surface, the settlement of hollow nail body is convenient, and through the diameter of end is greater than the diameter of first end, can maintain the firmness when hollow nail body and skeleton are connected, after finishing the settlement, through center hole directly injects the bone cement to the position of bone loose, need not to carry out the take -out operation to hollow nail body to the situation that will not cause the bone destruction, ensure that the bone cement injection action carries on smoothly.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically to a hollow nail riveting structure fixing device. Background Technology

[0002] Osteoporosis, also known as osteoporosis syndrome, is a group of bone diseases caused by various factors. While bone tissue exhibits normal calcification and a normal ratio of calcium salts to matrix, it is characterized by a decrease in bone tissue volume per unit volume, a metabolic bone disorder. In most cases of osteoporosis, the reduction in bone tissue is primarily due to increased bone resorption. Characterized by bone pain and susceptibility to fractures, the bones of osteoporotic patients are more fragile than normal bones. Therefore, in some cases, it is necessary to drill holes in the corresponding locations of the bones to inject bone cement for treatment. However, currently, after drilling, screws need to be removed. This screw removal process can cause bone fragmentation, hindering the smooth injection of bone cement and significantly complicating the surgical procedures for osteoporotic patients.

[0003] In view of this, the present invention proposes a hollow nail riveting structure fixing device. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a hollow nail riveting structure fixing device to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a hollow nail riveting structure fixing device, including a hollow nail body and a driver for turning the hollow nail body. The hollow nail body includes a head end, a center end, and a tail end, which are smoothly connected. The diameters of the head end, head end, and tail end increase sequentially. A central hole is opened on the surface of the hollow nail body. The central hole is located at the central axis of the hollow nail body and extends from the bottom surface of the head end to the top surface of the tail end. A first external thread is provided on the surface of the hollow nail body. A stepped groove is opened on the surface of the tail end. The central axis of the stepped groove coincides with the central axis of the central hole. The stepped groove is adapted to the driver.

[0006] Furthermore, the bottom surface of the first end is provided with five self-tapping grooves, which are evenly distributed in a circular array.

[0007] As a further description of the above technical solution: by creating self-tapping grooves, the hollow screw body can achieve self-drilling and self-tapping without the need for pre-drilling, thus reducing surgical steps and shortening surgical time.

[0008] Furthermore, the first external thread is a gradually changing continuous external thread, and the pitch of the first external thread gradually decreases from the beginning to the end.

[0009] As a further description of the above technical solution: Since the pitch of the first external thread gradually decreases, it can achieve a locking effect on the hollow nail body after the hollow nail body is drilled into the bone, thus preventing loosening.

[0010] Furthermore, the inner wall of the stepped groove is provided with an internal thread groove, and the driver includes a handle, a rod and a chuck. The surface of the chuck is provided with a second external thread, and the internal thread groove is adapted to the second external thread.

[0011] As a further description of the above technical solution: When using the driver, the second external thread on the surface of the chuck is connected to the internal thread groove, which can enhance the stability of the connection between the driver and the hollow nail body, thereby ensuring the accuracy of the hollow nail body during placement.

[0012] Furthermore, the thread direction of the second external thread is the same as that of the first external thread.

[0013] As a further description of the above technical solution: since the thread direction of the second external thread is the same as that of the first external thread, when the hollow nail body is driven to drill into the bone, the driver and the hollow nail body are self-locking. After the drilling action is completed, the driver is reversed, the hollow nail body is locked with the bone, and the driver and the hollow nail body are separated.

[0014] Furthermore, the hollow nail body is made of TC4 titanium alloy, and the surface of the hollow nail body is anodized.

[0015] As a further description of the above technical solution: TC4 titanium alloy is used as the material of the hollow nail body 1, which gives it the advantages of moderate hardness, high toughness and corrosion resistance.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] 1. Compared with existing technologies, this hollow nail riveting structure fixing device uses an actuator to engage with the stepped groove. The actuator then places the hollow nail body into the osteoporotic area requiring bone cement filling. The first external thread on the surface of the hollow nail body facilitates its placement. The diameter of the end being larger than that of the head ensures a firm connection between the hollow nail body and the bone. After placement, the actuator is removed, and bone cement is injected directly into the osteoporotic area through the central hole without the need to remove the hollow nail body, thus preventing bone damage and ensuring smooth bone cement injection. When the hollow nail body remains inside the bone, its headless design allows it to completely penetrate the bone surface without hindering movement.

[0018] 2. Compared with the existing technology, the hollow nail riveting structure fixing device can realize the self-drilling and self-tapping of the hollow nail body by opening self-tapping grooves, without the need for pre-drilling, reducing surgical steps and shortening surgical time.

[0019] 3. Compared with the prior art, the hollow nail riveting structure fixing device, due to the gradually decreasing pitch of the first external thread, can achieve the locking effect of the hollow nail body after it is drilled into the bone, thus avoiding loosening.

[0020] 4. Compared with the prior art, the hollow nail riveting structure fixing device, when using the driver, utilizes the second external thread on the surface of the clamp to connect with the internal thread groove, which can enhance the stability of the connection between the driver and the hollow nail body, thereby ensuring the accuracy of the hollow nail body placement; since the thread direction of the second external thread is the same as that of the first external thread, when the hollow nail body is driven to drill into the bone, the driver and the hollow nail body are self-locking, and after the drilling action is completed, the driver is reversed, the hollow nail body is clamped to the bone, and the driver and the hollow nail body are separated. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the hollow nail body and the driver of this utility model.

[0022] Figure 2 This is a two-dimensional structural diagram of the hollow nail body and the driver of this utility model from a two-dimensional perspective;

[0023] Figure 3 This is a cross-sectional three-dimensional structural diagram of the hollow nail body of this utility model.

[0024] The attached figures are labeled as follows: 1. Hollow nail body; 101. Head end; 102. Center end; 103. End; 104. Center hole; 105. First external thread; 106. Stepped groove; 107. Self-tapping groove; 108. Internal thread groove; 2. Driver; 201. Handle; 202. Rod; 203. Collar; 204. Second external thread. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The hollow nail riveting structure fixing device involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Reference Figures 1 to 3This utility model provides a hollow nail riveting structure fixing device, including a hollow nail body 1 and a driver 2 for turning the hollow nail body 1. The hollow nail body 1 is made of TC4 titanium alloy material, and the surface of the hollow nail body 1 is anodized.

[0027] Using TC4 titanium alloy as the material for the hollow nail body 1 gives it the advantages of moderate hardness, high toughness and corrosion resistance.

[0028] The hollow nail body 1 includes a head end 101, a center end 102, and a tail end 103. The head end 101, the center end 102, and the tail end 103 are smoothly connected, and the diameters of the center end 102, the head end 101, and the tail end 103 increase sequentially. A central hole 104 is provided on the surface of the hollow nail body 1. The central hole 104 is located at the central axis of the hollow nail body 1 and extends from the bottom surface of the head end 101 to the top surface of the tail end 103. A first external thread 105 is provided on the surface of the hollow nail body 1. A stepped groove 106 is provided on the surface of the tail end 103. The central axis of the stepped groove 106 coincides with the central axis of the central hole 104. The stepped groove 106 is adapted to the driver 2.

[0029] This hollow nail rivet structure fixing device uses a driver 2 to insert the hollow nail body 1 into the osteoporotic area where bone cement needs to be filled. The driver 2 is then engaged in the stepped groove 106. The first external thread 105 on the surface of the hollow nail body 1 facilitates its placement. The diameter of the end 103 is larger than that of the head 101, which ensures the firmness of the connection between the hollow nail body 1 and the bone. After placement, the driver 2 is removed, and bone cement is injected directly into the osteoporotic area through the central hole 104 without removing the hollow nail body 1, thus preventing bone damage and ensuring the smooth injection of bone cement.

[0030] Furthermore, when the hollow nail body 1 is placed inside the bone, because the hollow nail body 1 is headless, it can be completely submerged in the bone surface without hindering movement.

[0031] The inner wall of the stepped groove 106 is provided with an internal thread groove 108. The driver 2 includes a handle 201, a rod 202 and a chuck 203. The surface of the chuck 203 is provided with a second external thread 204. The internal thread groove 108 is adapted to the second external thread 204.

[0032] When using the driver 2, the second external thread 204 on the surface of the chuck 203 is threaded to the internal thread groove 108, which can enhance the stability of the connection between the driver 2 and the hollow nail body 1, thereby ensuring the accuracy of the hollow nail body 1 when it is placed.

[0033] The thread direction of the second external thread 204 is the same as that of the first external thread 105.

[0034] It is worth noting that, since the thread direction of the second external thread 204 is the same as that of the first external thread 105, when the hollow nail body 1 is driven to drill into the bone, the driver 2 and the hollow nail body 1 are self-locked. After the drilling action is completed, the driver 2 is reversed, and the driver 2 can be separated from the hollow nail body 1 while the hollow nail body 1 is locked to the bone.

[0035] The bottom surface of the first end 101 is provided with five self-tapping grooves 107, which are evenly distributed in a circular array.

[0036] It is worth noting that by creating the self-tapping groove 107, the hollow screw body 1 can achieve self-drilling and self-tapping without the need for pre-drilling, thus reducing surgical steps and shortening surgical time.

[0037] The first external thread 105 is a gradually changing continuous external thread, and the pitch of the first external thread 105 gradually decreases from the beginning end 101 to the end end 103.

[0038] It is worth noting that, due to the gradually decreasing pitch of the first external thread 105, the hollow nail body 1 can achieve a locking effect after it is drilled into the bone, thus preventing the hollow nail body 1 from becoming loose during later physical activities.

[0039] Finally, it should be noted that the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A hollow nail riveting structure fixing device, comprising a hollow nail body (1) and a drive (2) for turning the hollow nail body (1), characterized in that: The hollow nail body (1) includes a head end (101), a center end (102), and a tail end (103). The head end (101), the center end (102), and the tail end (103) are smoothly connected, and the diameters of the center end (102), the head end (101), and the tail end (103) increase sequentially. A central hole (104) is provided on the surface of the hollow nail body (1). The central hole (104) is located at the central axis of the hollow nail body (1). The central hole (104) extends from the bottom surface of the head end (101) to the top surface of the tail end (103). A first external thread (105) is provided on the surface of the hollow nail body (1). A stepped groove (106) is provided on the surface of the tail end (103). The central axis of the stepped groove (106) coincides with the central axis of the central hole (104). The stepped groove (106) is adapted to the driver (2).

2. A hollow nail riveting structure fixing device according to claim 1, characterized in that: The bottom surface of the first end (101) is provided with self-tapping grooves (107), and there are five self-tapping grooves (107) in a circular array.

3. A hollow nail riveting structure fixing device according to claim 1, characterized in that: The first external thread (105) is a gradually changing continuous external thread, and the pitch of the first external thread (105) gradually decreases from the beginning end (101) to the end end (103).

4. A hollow nail riveting structure fixing device according to claim 1, characterized in that: The inner wall of the stepped groove (106) is provided with an internal thread groove (108). The driver (2) includes a handle (201), a rod (202) and a chuck (203). The surface of the chuck (203) is provided with a second external thread (204). The internal thread groove (108) is adapted to the second external thread (204).

5. A hollow nail riveting structure fixing device according to claim 4, characterized in that: The thread direction of the second external thread (204) is the same as that of the first external thread (105).

6. A hollow nail riveting structure fixing device according to claim 1, characterized in that: The hollow nail body (1) is made of TC4 titanium alloy, and the surface of the hollow nail body (1) is anodized.

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