Absorbable screw and auxiliary screwing-in device thereof

Abstract

The invention discloses an absorbable screw and an auxiliary screwing-in device thereof, the absorbable screw comprises a screw and a screwing-in device, the screw comprises a screw rod and a screw head, the screw head is provided with a groove, and the wall of the groove is provided with a fixing hole; a hexagonal hole is formed in one end of the screwing-in device, a notch and a fixing table are arranged at the other end of the screwing-in device, the fixing table is matched with a groove in a screw head, and the notch is matched with the edge of the screw head. The screw-in device is arranged to screw an absorbable screw into the bone fracture plate, the screw-in device is further provided with a protrusion and a device for adjusting the protrusion, when the screw-in device is used, the screw-in device can be arranged on the screw in advance to wait for operation of a doctor, operation time is saved, the rotating piece is arranged in the middle of the screw-in device, and the screw-in device is convenient to use. The screwing-in device is installed or taken down by rotating the rotating piece, and the screwing-in device can be repeatedly used.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an absorbable screw and an auxiliary screw-in device thereof. Background Art

[0002] Fracture is a pathological condition in which the continuity of bone tissue is destroyed. Fractures can cause local pain and joint dysfunction, seriously affecting the patient's daily life, and require surgical reduction and repair for treatment. In the past, metal materials were often used in clinical fracture internal fixation, but the disadvantages of requiring another surgery to remove the material and metal erosion were not easily accepted by patients.

[0003] With the development of absorbable materials, absorbable screws were born, which not only meet the needs of internal fixation, but also degrade in the human body after the fracture heals, participate in metabolism, have no toxic reaction to the body, and can avoid the disadvantages of secondary removal. However, in the process of fixing and screwing in absorbable screws, it is generally not possible to simply place the screwdriver in the notch of the nail head and rotate it like a metal screw, because the stiffness of the material currently used to make absorbable screws is much smaller than that of metal materials. The direct screwing method may cause the notch of the nail head to be damaged and fail, making the screw unusable and causing waste. Moreover, the screwdriver for screwing in needs to be customized, and standard screwdrivers cannot be used. Summary of the invention

[0004] The purpose of the present invention is to provide a method to solve the problem that the rigidity of the material currently used to manufacture absorbable screws is much lower than that of metal materials, and the method of screwing directly into the screw head may cause the screw head notch to be scratched and fail, making the screw unusable and causing waste. In addition, the screwdriver for screwing in needs to be customized, and standard screwdrivers cannot be used.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] An absorbable screw and an auxiliary screw-in device thereof, comprising a screw 1 and a screw-in device 2, wherein the screw 1 comprises a screw rod 101 and a screw head 102, wherein the screw head 102 is provided with a groove 103, and a fixing hole 104 is provided on the wall of the groove 103; a hexagonal hole 214 is provided on one end of the screw-in device 2, and a notch 202 and a fixing platform 201 are provided on the other end, wherein the fixing platform 201 cooperates with the groove 103 on the screw head 102, and the notch 202 cooperates with the edge of the screw head 102.

[0007] A plurality of fixing platforms 201 are provided on one end of the screw-in device 2. The fixing platforms 201 are arranged with the notch 202. Front plates 205 are provided on both sides of the fixing platforms 201. Protrusions 203 are provided on both sides of the fixing platforms 201. The protrusions 203 are located on the side walls of the notch 202. The protrusions 203 extend out from the front plate 205 and are retracted.

[0008] The protrusion 203 is fixed on one side of the rear plate 206. A plurality of springs 204 are arranged between the rear plate 206 and the front plate 205. Connecting ropes 207 are provided at the upper and lower positions on the other side of the rear plate 206. The connecting ropes 207 are connected to the rear plate 206 on the protrusions 203 on both sides of the fixing table 201.

[0009] A fixing knot 209 is provided at the middle position of the connecting rope 207. The fixing knot 209 is arranged on the pulling rope 208. The pulling rope 208 is connected to the upper and lower connecting ropes 207 through the fixing knot 209.

[0010] The pulling rope 208 passes through the rotating member 211 and is fixed with a fixing ring 213. The rotating member 211 is arranged at the middle position of the screwing device 2. Anti-slip protrusions 212 are provided at the circumferential position of the rotating member 211. The anti-slip protrusions 212 can facilitate the doctor to rotate the rotating member 211.

[0011] The protrusion 203, the rear plate 206 and the connecting rope 207 are all arranged inside the fixing table 201. A space is left at the position of the rear plate 206 for the rear plate 206 to move. The connecting rope 207, the pulling rope 208 and the fixing knot 209 all pass through the inner wall 210 of the fixing table. The front plate 205 serves as a side plate for closing the fixing table 201. The protrusion 203 moves as the pulling rope 208 is pulled.

[0012] When the rotating member 211 is rotated, the pulling rope 208 contracts, driving the connecting rope 207 to contract, driving the rear plate 206 to move. The rear plate 206 and the protrusion 203 are fixed together. The protrusion contracts towards the inside of the fixing table 201. When the rotating member 211 is released, due to the resilience of the spring 204 fixed on the front plate 205 and the rear plate 206, the rear plate 206 is pulled back to its original position, and a part of the protrusion 203 extends out. When cooperating with the screw 1, the protruding part of the protrusion 203 cooperates with the fixing hole 104 to limit the movement of the screwing device for better use.

[0013] The screw is made of PLDL material, and the screwing device is made of 316 stainless steel material.

[0014] A method for using an absorbable screw and its auxiliary screwing device includes the following steps;

[0015] S1; Fit and fix the fixing table 201 on the screwing device 2 with the groove 102 on the screw 1. Then rotate the rotating member 211 once. The protrusion 203 retracts into the fixing table 201. Then release the rotating member 211. The protrusion extends out a part following the pulling of the spring 204 and contacts and cooperates with the fixing hole 104 on the side wall of the groove 103 to fix the screwing device 2 on the screw 1;

[0016] S2; Place the screw 1 into the screw hole of the bone plate;

[0017] S3; Screw 1 is screwed into the bone plate through the screwing device 2 with a suitable screwdriver, and then the screwdriver is removed;

[0018] S4; Rotate the rotating part 211, the protrusion 203 retracts into the fixed table 201, and then the screwing device 2 is removed.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] In the present invention, the absorbable screw is screwed into the bone plate through the screwing device. The screwing device is also provided with a protrusion and a device for adjusting the protrusion. During use, the screwing device can be pre-set on the screw and wait for the doctor to operate, saving surgical time. A rotating part is provided at the middle position of the screwing device, and the screwing device is installed or removed by rotating the rotating part. The screwing device can be used repeatedly. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention

[0022] Figure 2 It is a schematic diagram of the screw structure of the present invention

[0023] Figure 3 It is a schematic diagram of the screw head structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the overall structure of the screwing device of the present invention;

[0025] Figure 5 It is a partial schematic diagram of the screwing device of the present invention;

[0026] Figure 6 It is one of the schematic diagrams of the protrusion telescopic structure of the screwing device of the present invention;

[0027] Figure 7 It is the second schematic diagram of the protrusion telescopic structure of the screwing device of the present invention;

[0028] Figure 8 It is a schematic diagram of the internal structure of the fixed table of the screwing device of the present invention;

[0029] Figure 9 It is a partial perspective schematic diagram of the present invention.

[0030] In the figure: 1, screw; 101, screw rod; 102, screw head; 103, groove; 104, fixing hole; 2, screwing device; 201, fixed table; 202, notch; 203, protrusion; 204, spring; 205, front plate; 206, rear plate; 207, connecting rope; 208, pulling rope; 209, fixing section; 210, inner wall of the fixed table; 211, rotating part; 212, anti-slip protrusion; 213, fixing ring; 214, hexagonal hole. Detailed implementation mode

[0031] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present invention.

[0032] An absorbable screw and its auxiliary screwing-in device, including a screw 1 and a screwing-in device 2. The screw 1 includes a screw rod 101 and a screw head 102. A groove 103 is provided on the screw head 102, and a fixing hole 104 is provided on the wall of the groove 103; a hexagonal hole 214 is provided at one end of the screwing-in device 2, and a notch 202 and a fixing platform 201 are provided at the other end. The fixing platform 201 cooperates with the groove 103 on the screw head 102, and the notch 202 cooperates with the edge of the screw head 102.

[0033] A plurality of fixing platforms 201 are provided at one end of the screwing-in device 2. The fixing platforms 201 are arranged relative to the notch 202. Front plates 205 are provided on both sides of the fixing platform 201. Protrusions 203 are provided on both side edges of the fixing platform 201. The protrusions 203 are located on the side wall of the notch 202, and the protrusions 203 extend and retract from the front plate 205.

[0034] The protrusion 203 is fixed on one side of the rear plate 206. A plurality of springs 204 are provided between the rear plate 206 and the front plate 205. Connecting ropes 207 are provided at the upper and lower positions on the other side of the rear plate 206. The connecting ropes 207 connect the rear plates 206 on the protrusions 203 on both sides of the fixing platform 201.

[0035] A fixing node 209 is provided at the middle position of the connecting rope 207. The fixing node 209 is arranged on the pulling rope 208. The pulling rope 208 is connected to the upper and lower connecting ropes 207 through the fixing node 209.

[0036] The pulling rope 208 passes through the rotating member 211 and is fixed with a fixing ring 213. The rotating member 211 is arranged at the middle position of the screwing-in device 2. Anti-slip protrusions 212 are provided at the circumferential position of the rotating member 211.

[0037] The protrusion 203, the rear plate 206 and the connecting rope 207 are all arranged inside the fixing platform 201. A space is left at the position of the rear plate 206 for the rear plate 206 to move. The connecting rope 207, the pulling rope 208 and the fixing node 209 all pass through the inner wall 210 of the fixing platform. The front plate 205 serves as the side plate for closing the fixing platform 201. The protrusion 203 moves by pulling the pulling rope 208.

[0038] When the rotating member 211 is rotated, the pulling rope 208 contracts, driving the connecting rope 207 to contract, driving the rear plate 206 to move. The rear plate 206 is fixed to the protrusion 203, and the protrusion contracts into the interior of the fixing base 201. When the rotating member 211 is released, the spring 204 fixed to the front plate 205 and the rear plate 206 rebounds, pulling the rear plate 206 back to its original position, and a part of the protrusion 203 extends out. When it is fixed to the screw 1, the protruding part of the protrusion 203 cooperates with the fixing hole 104 to limit the movement of the screwing-in device for better use.

[0039] The screw is made of PLDL material, and the screwing-in device is made of 316 stainless steel material.

[0040] A method for using an absorbable screw and its auxiliary screwing-in device, characterized by including the following steps;

[0041] S1; Fit and fix the fixing base 201 on the screwing-in device 2 with the groove 102 on the screw 1, then rotate the rotating member 211 once, the protrusion 203 retracts into the fixing base 201, then release the rotating member 211, and the protrusion extends out a part following the pulling of the spring 204 and contacts and cooperates with the fixing hole 104 on the side wall of the groove 103 to fix the screwing-in device 2 on the screw 1;

[0042] S2; Place the screw 1 into the screw hole of the bone plate;

[0043] S3; Screw the screw 1 into the bone plate through the screwing-in device 2 with a suitable screwdriver, and then remove the screwdriver;

[0044] S4; Rotate the rotating member 211, the protrusion 203 retracts into the fixing base 201, and remove the screwing-in device 2.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An absorbable screw and its auxiliary screwing-in device, characterized in that, It includes a screw (1) and a screwing-in device (2). The screw (1) includes a screw rod (101) and a screw head (102). A groove (103) is provided on the screw head (102), and a fixing hole (104) is provided on the wall of the groove (103); one end of the screwing-in device (2) is provided with a hexagonal hole (214), and the other end is provided with a notch (202) and a fixing platform (201). The fixing platform (201) cooperates with the groove (103) on the screw head (102), and the notch (202) cooperates with the edge of the screw head (102).

2. The absorbable screw and its auxiliary screwing-in device according to claim 1, characterized in that, A plurality of fixing platforms (201) are provided at one end of the screwing-in device (2). The fixing platforms (201) are arranged relative to the notch (202). Front plates (205) are provided on both sides of the fixing platform (201). Protrusions (203) are provided on both side edges of the fixing platform (201). The protrusions (203) are located on the side wall of the notch (202), and the protrusions (203) extend and retract from the front plates (205).

3. The absorbable screw and its auxiliary screwing-in device according to claim 2, characterized in that, The protrusions (203) are fixed on one side of a rear plate (206). A plurality of springs (204) are provided between the rear plate (206) and the front plates (205). Connecting ropes (207) are provided at the upper and lower positions on the other side of the rear plate (206). The connecting ropes (207) connect the rear plates (206) on the protrusions (203) on both sides of the fixing platform (201).

4. The absorbable screw and its auxiliary screwing-in device according to claim 3, characterized in that, A fixing knot (209) is provided at the middle position of the connecting rope (207). The fixing knot (209) is arranged on a pulling rope (208). The pulling rope (208) is connected to the upper and lower connecting ropes (207) through the fixing knot (209).

5. The absorbable screw and its auxiliary screwing-in device according to claim 4, characterized in that, The pulling rope (208) passes through a rotating member (211) and is fixed with a fixing ring (213). The rotating member (211) is arranged at the middle position of the screwing-in device (2). Anti-slip protrusions (212) are provided at the circumferential position of the rotating member (211).

6. The absorbable screw and its auxiliary screwing-in device according to claim 5, characterized in that, The protrusions (203), the rear plate (206) and the connecting ropes (207) are all arranged inside the fixing platform (201). A space is left at the position of the rear plate (206) for the rear plate (206) to move. The connecting ropes (207), the pulling rope (208) and the fixing knot (209) all shuttle inside the inner wall (210) of the fixing platform. The front plates (205) serve as side plates for closing the fixing platform (201). The protrusions (203) move by being pulled by the pulling rope (208).

7. The absorbable screw and its auxiliary screwing-in device according to claim 6, characterized in that, The screw is made of PLDL material, and the screwing-in device is made of 316 stainless steel material.

8. A method for using an absorbable screw and its auxiliary screwing-in device, characterized in that, Using an absorbable screw and its auxiliary screwing-in device according to any one of the above claims 1-7, includes the following steps; S1; Fit and fix the fixing platform (201) on the screwing-in device (2) with the groove (102) on the screw (1). Then rotate the rotating member (211) once. The protrusions (203) retract into the fixing platform (201). Then release the rotating member (211). The protrusions extend a part following the pulling of the spring (204) and come into contact and cooperation with the fixing holes (104) on the side wall of the groove (103), fixing the screwing-in device (2) on the screw (1); S2; Place the screw (1) into the screw hole of the bone plate; S3; Use a suitable screwdriver to screw the screw (1) into the bone plate through the screwing device (2), and then remove the screwdriver; S4; Rotate the rotating part (211), the protrusion (203) retracts into the fixed platform (201), and then remove the screwing device (2).

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