Auxiliary implantation device for distal tibiofibular screw

Abstract

The utility model discloses an auxiliary distal tibiofibular screw implantation device which comprises a first guide tube, a second guide tube, a third guide tube and a fourth guide tube, the first guide tube is of an L-shaped pipeline structure, a hole structure is arranged in the first guide tube, the first guide tube and the second guide tube are symmetrically arranged, and implantation holes of distal tibiofibular screws are formed in the first guide tube and the second guide tube; a sliding rod is slidably connected to the interior of one end of the first guide pipe and installed in the limiting sleeve. According to the auxiliary implantation device for the distal tibiofibular screw, the first guide tube and the second guide tube are matched with the first limiting tube and the second limiting tube to form an outer-layer rectangular structure, the outer-layer rectangular structure is matched with the linear direction display angle of the distal tibiofibular screw, and meanwhile the ankles of a patient are wrapped with the two mounting inner rings symmetrically arranged on the inner layer to form an annular structure; angle correction assistance can be conveniently carried out on inferior tibiofibular screw placement directions in different directions, the inferior tibiofibular screw placement directions are kept within the specified height, and inferior tibiofibular screw placement errors are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of orthopedic surgical medical devices, in particular to a device for assisting the insertion of a syndesmosis screw. Background Technique

[0002] The inferior tibiofibular joint, also known as the inferior tibiofibular syndesmosis, is one of the important structures for maintaining the stability of the ankle joint. It is composed of the distal ends of the tibia and fibula and the inferior tibiofibular ligament complex. Inferior tibiofibular syndesmosis separation is a common concomitant injury of ankle fractures and dislocations. After injury, surgical treatment is generally used. Common fixation methods include using screws, tibiofibular hooks, suture anchors, etc. Among them, screw fixation is the most commonly used.

[0003] In the traditional surgical process, the reduction of the inferior tibiofibular joint is carried out by clamping and reducing with a reduction forceps or a patella forceps. This operation is related to the experience of the surgical staff, which is prone to errors and affects the postoperative recovery of patients. Moreover, due to the special shape of the inferior tibiofibular joint, the direction during reduction and screw fixation is crucial and the angle needs to be adjusted in cooperation with the inferior tibiofibular joint. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a device for assisting the insertion of a syndesmosis screw, so as to solve the problems mentioned in the above background technique that the traditional reduction operation with a reduction forceps or a patella forceps is related to the experience of the surgical staff, which is prone to errors and affects the postoperative recovery of patients. Moreover, due to the special shape of the inferior tibiofibular joint, the direction during reduction and screw fixation is crucial and the angle needs to be adjusted in cooperation with the inferior tibiofibular joint.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A device for assisting the insertion of a syndesmosis screw, including a first guiding tube, which is set as an L-shaped pipe structure. There is a hole structure inside the first guiding tube, and the first guiding tube and the second guiding tube are symmetrically arranged. There are holes for inserting the syndesmosis screw inside both the first guiding tube and the second guiding tube;

[0006] One end of the first guiding tube is internally slidably connected with a slide bar, and the slide bar is installed inside a limit sleeve. One end of the limit sleeve is slidably connected to the outside of the first guiding tube, and a limit assisting component is arranged outside the limit sleeve for cooperating with the bone position of the foot bone to insert the syndesmosis screw;

[0007] A first limit tube, which is installed at the other end of the limit sleeve. The first limit tube is set as an L-shaped pipe structure, and a first positioning rod is installed inside the other end of the first limit tube. A first limit handle is arranged on the outer wall surface of the first positioning rod, and a second limit handle is rotatably connected to the upper end of the first limit handle. The second limit handle and the first limit handle are internally rotatably connected to the shaft rod of a limit ring, and the limit ring is set as an I-shaped annular frame structure;

[0008] The second positioning rod is installed at one end of the second limiting handle. The second positioning rod is symmetrically arranged with the first positioning rod, and the second positioning rod is installed inside one end of the second limiting tube. The other end of the second limiting tube is slidably connected to one end of another sliding rod, and the other end of this sliding rod is slidably connected inside the second guiding tube. A limiting frame is arranged inside the second guiding tube, and an auxiliary head is installed at the other end of the second guiding tube.

[0009] Adopting the above technical solution, it is convenient to keep the installation stable during the installation process of the inferior tibiofibular screw at the fracture site of the tibia and fibula where the patient has dislocation and separation.

[0010] Preferably, the limiting frame slidably connected inside the first guiding tube is a double-layer structure, and the inner layer of the limiting frame is a conical frame structure composed of 4 petal-shaped pieces.

[0011] Adopting the above technical solution, the limiting frame slidably connected inside the first guiding tube is used to limit the diameter of the rod body and the screw entering the interior.

[0012] Preferably, the limiting and assisting assembly includes:

[0013] The mounting frame is sleeved on the outer wall surface of the limiting sleeve, and the mounting frame is arranged in an annular structure, and there is a groove on one side of the mounting frame;

[0014] The inner mounting ring is installed in the groove of the mounting frame, and the inner mounting ring is arranged in a C-shaped frame structure;

[0015] The limiting balls are equidistantly arranged inside the inner mounting ring.

[0016] Adopting the above technical solution, the limiting and assisting assembly is used to cooperate with the inferior tibiofibular screw to be inserted into the fractured and dislocated tibia and fibula of the patient.

[0017] Preferably, the mounting frame is concentrically sleeved and installed with the sliding rod and the limiting sleeve, and there are 2 symmetrically arranged mounting frames.

[0018] Adopting the above technical solution, the concentric setting of the mounting frame with the sliding rod and the limiting sleeve provides protection for the sliding pipeline.

[0019] Preferably, the first limiting tube and the second limiting tube are symmetrically arranged, and the first guiding tube, the first limiting tube, the second limiting tube and the second guiding tube form a rectangular frame structure.

[0020] Adopting the above technical solution, the rectangular frame formed by the combination of the first limiting tube and the second limiting tube and the first guiding tube and the second guiding tube is used to adjust the installation position of the screw.

[0021] Preferably, both the inner sides of the first positioning rod and the second positioning rod are provided with hole chutes, and both the second positioning rod and the first positioning rod are rod body structures made of silica gel.

[0022] With the above technical solution, the sliding grooves of the first positioning rod and the second positioning rod provide assistance for the installation and movement of the inner ring.

[0023] Preferably, two installation inner rings are symmetrically arranged. One end of one installation inner ring is slidably connected to the outer wall surfaces of the first guiding tube and the first limiting tube, and the two ends of the other installation inner ring are slidably connected to the outer wall surfaces of the second limiting tube and the second guiding tube.

[0024] With the above technical solution, the installation of the inner ring is convenient for limiting in cooperation with the injured part of the patient.

[0025] Compared with the prior art, the beneficial effects of the present utility model are as follows: The inferior tibiofibular screw auxiliary implantation device:

[0026] 1. When in use, the first guiding tube and the second guiding tube cooperate with the first limiting tube and the second limiting tube to form an outer rectangular structure to display the angle of the linear direction of the inferior tibiofibular screw. At the same time, two installation inner rings symmetrically arranged inside are wrapped around the patient's ankle to form an annular structure, which is convenient for angle correction and assistance in the implantation direction of the inferior tibiofibular screw in different directions, keeping the implantation direction of the inferior tibiofibular screw within a specified height and reducing the error of the inferior tibiofibular screw implantation.

[0027] 2. Due to the double-layer setting of the device, for the implantation operation of the inferior tibiofibular screw or the tape-loop plate, the guiding tube can guide the nail insertion direction, which helps to improve the accuracy of the implantation. The limiting frame slidably connected inside the first guiding tube is used to further guide the orientation of the inferior tibiofibular screw and the tibiofibula with dislocation of the patient, avoiding the inclination during the implantation of the inferior tibiofibular screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall external three-dimensional structure of the present utility model;

[0029] Figure 2 is a schematic diagram of the overall internal top-sectional three-dimensional structure of the present utility model;

[0030] Figure 3 is a schematic diagram of the overall internal side-sectional three-dimensional structure of the present utility model;

[0031] Figure 4 is a schematic diagram of the three-dimensional structure of the installation of the first guiding tube and the limiting sleeve of the present utility model;

[0032] Figure 5 is a schematic diagram of the three-dimensional structure of the installation of the first limiting handle, the second limiting handle and the limiting ring of the present utility model;

[0033] Figure 6 is a schematic diagram of the disassembled three-dimensional structure of the positioning rod and the limiting sleeve of the present utility model.

[0034] In the figure: 1. First guiding tube; 2. Restricting frame; 3. Slide bar; 4. Limiting sleeve; 5. Mounting frame; 6. First limiting tube; 7. First positioning rod; 8. First limiting handle; 9. Second limiting handle; 10. Limiting ring; 11. Second positioning rod; 12. Second limiting tube; 13. Second guiding tube; 14. Auxiliary head; 15. Inner mounting ring; 16. Limiting ball. Detailed implementation mode

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments 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 efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figure 1-6 , the present invention provides a technical solution: a device for assisting the insertion of a syndesmosis screw, including a first guiding tube 1, a restricting frame 2, a slide bar 3, a limiting sleeve 4, a mounting frame 5, a first limiting tube 6, a first positioning rod 7, a first limiting handle 8, a second limiting handle 9, a limiting ring 10, a second positioning rod 11, a second limiting tube 12, a second guiding tube 13, an auxiliary head 14, an inner mounting ring 15 and a limiting ball 16;

[0037] Among them, the first guiding tube 1 is set as an L-shaped pipe structure, and a hole structure is arranged inside the first guiding tube 1. The first guiding tube 1 and the second guiding tube 13 are symmetrically arranged, and holes for inserting the syndesmosis screw are arranged inside both the first guiding tube 1 and the second guiding tube 13;

[0038] One end inside the first guiding tube 1 is slidably connected with a slide bar 3, and the slide bar 3 is installed inside the limiting sleeve 4. One end of the limiting sleeve 4 is slidably connected with the outside of the first guiding tube 1, and a limiting auxiliary component is arranged outside the limiting sleeve 4 for cooperating with the bone position of the foot bone to insert the syndesmosis screw. A restricting frame 2 is slidably connected inside the first guiding tube 1 and is a double-layer structure, and the inner layer of the restricting frame 2 is a conical frame structure composed of 4 petals;

[0039] The first limiting tube 6 is installed at the other end of the limiting sleeve 4. The first limiting tube 6 is arranged as an L-shaped pipe structure, and a first positioning rod 7 is installed inside the other end of the first limiting tube 6. A first limiting handle 8 is arranged on the outer wall surface of the first positioning rod 7, and a second limiting handle 9 is rotatably connected to the upper end of the first limiting handle 8. The second limiting handle 9 and the first limiting handle 8 are internally rotatably connected to the shaft rod of the limiting ring 10. The limiting ring 10 is arranged as an I-shaped ring frame structure. The first limiting tube 6 and the second limiting tube 12 are symmetrically arranged, and the first guiding tube 1, the first limiting tube 6, the second limiting tube 12, and the second guiding tube 13 form a rectangular frame structure. Hole chutes are arranged on the inner sides of the first positioning rod 7 and the second positioning rod 11, and both the second positioning rod 11 and the first positioning rod 7 are rod structures made of silica gel;

[0040] The second positioning rod 11 is installed at one end of the second limiting handle 9. The second positioning rod 11 and the first positioning rod 7 are symmetrically arranged, and the second positioning rod 11 is installed inside one end of the second limiting tube 12. The other end of the second limiting tube 12 is slidably connected to one end of another slide rod 3, and the other end of the slide rod 3 is slidably connected inside the second guiding tube 13. A limiting frame 2 is arranged inside the second guiding tube 13, and an auxiliary head 14 is installed at the other end of the second guiding tube 13;

[0041] Combined with the Figure 1-6 shown in the attached drawings of the specification, when in use, the first guiding tube 1, the first limiting tube 6, the second limiting tube 12, and the second guiding tube 13 form a rectangular frame structure. As Figure 1 shown, at the same time, the pipes of this rectangular frame structure are circular pipe structures, which are convenient for guiding the internal push of the syndesmosis screw to the dislocated and separated tibia and fibula of the patient. The first guiding tube 1 and the first limiting tube 6, as well as the second limiting tube 12 and the second guiding tube 13, are connected through the double-layer structure of the slide rod 3 and the limiting sleeve 4. As Figure 1-3 shown, the first guiding tube 1 and the first limiting tube 6 form a U-shaped structure, the second limiting tube 12 and the second guiding tube 13 form a U-shaped structure, and the two U-shaped structures are symmetrically arranged. The first positioning rod 7 installed inside the first limiting tube 6 is made of rubber material. The first limiting handle 8 installed at one end of the first positioning rod 7 is rotatably connected to the rotating shaft of the limiting ring 10. As Figure 1-2 shown, the second limiting handle 9 rotatably connected to the rotating shaft of the limiting ring 10 is arranged at the upper end of the first limiting handle 8. As Figure 1-2 shown, among them, the first limiting handle 8, the second limiting handle 9, and the limiting ring 10 form a handle to control the first guiding tube 1 and the first limiting tube 6, as well as the second limiting tube 12 and the second guiding tube 13 to be closed and clamped at the position of the patient's surgical leg;

[0042] The sliding grooves provided on the outer wall surfaces of the guiding tube 1, the limiting tube 1 6, the limiting tube 2 12, and the guiding tube 2 13 provide rotational and sliding positions for the internal structure, which is used to adjust the direction and angle of the inferior tibiofibular screw passing through the hollow hole inside the guiding tube 1. The auxiliary head 14 provided at one end of the guiding tube 2 13 is used to assist in indicating the position and direction of the inferior tibiofibular screw passing through the dislocated and separated tibia and fibula of the patient, facilitating the surgical personnel to control the insertion position of the inferior tibiofibular screw. The limiting frame 2 inside the guiding tube 1 is used to control the center line of the inferior tibiofibular screw to be consistent with the center line of the hole.

[0043] The limit and auxiliary assembly includes:

[0044] The mounting frame 5 is sleeved on the outer wall surface of the limiting sleeve 4, and the mounting frame 5 is set as an annular structure. There is a groove on one side of the mounting frame 5. The mounting frame 5, the sliding rod 3, and the limiting sleeve 4 are coaxially sleeved and installed, and 2 mounting frames 5 are symmetrically arranged.

[0045] The inner mounting ring 15 is installed in the groove of the mounting frame 5, and the inner mounting ring 15 is set as a C-shaped frame structure. 2 inner mounting rings 15 are symmetrically arranged. The two ends of one inner mounting ring 15 are slidably connected to the outer wall surfaces of the guiding tube 1 and the limiting tube 1 6, and the two ends of the other inner mounting ring 15 are slidably connected to the outer wall surfaces of the limiting tube 2 12 and the guiding tube 2 13.

[0046] The limiting balls 16 are equidistantly arranged inside the inner mounting ring 15.

[0047] Combined with the Figure 1-6 As shown in the attached drawings of the specification, the inner mounting rings 15 provided inside the guiding tube 1, the limiting tube 1 6, the limiting tube 2 12, and the guiding tube 2 13 form a circular structure that fits the position of the patient's leg. One side of the inner mounting ring 15 is connected to the outer wall surface of the limiting sleeve 4 through the mounting frame 5. The mounting frame 5 is set as an annular structure and is kept sleeved outside the limiting sleeve 4. The opening of the mounting frame 5 is used to limit the downward sleeve of the inner mounting ring 15 for sliding. The limiting balls 16 provided on the inner wall surface of the inner mounting ring 15 provide a stable limiting structure to prevent the inner mounting ring 15 from directly closing and wrapping around the patient's leg to exert pressure.

[0048] Working principle: When using the auxiliary insertion device for the inferior tibiofibular screw, by squeezing tightly at the holding limit handle 1 - 8 and the limit handle 2 - 9, the installation inner rings 15 symmetrically arranged inside the guiding tube 1 - 1, the limit tube 1 - 6, the limit tube 2 - 12 and the guiding tube 2 - 13 wrap around the surgical position of the patient's foot bone. The limit balls 16 on the inner wall surface of the installation inner ring 15 keep the surgical part of the leg in position. By rotating and adjusting the rectangular angle positions of the guiding tube 1 - 1, the limit tube 1 - 6, the limit tube 2 - 12 and the guiding tube 2 - 13 arranged outside the installation inner ring 15, the holes inside the guiding tube 1 - 1 and the guiding tube 2 - 13 provide guidance and assistance for the insertion of the inferior tibiofibular screw. With the cooperation of the limiting frame 2, the insertion depth of the inferior tibiofibular screw is restricted. The auxiliary head 14 arranged at the port of the guiding tube 2 - 13 shows at the top of the direction after the inferior tibiofibular row screw is inserted, so as to keep the direction stable during the whole row of screw installation of the inferior tibiofibular and provide insertion assistance, increasing the overall practicability.

[0049] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for assisting in the insertion of a syndesmosis screw, comprising: A first guiding tube (1), which is arranged in an L-shaped pipe structure. There is a hole structure inside the first guiding tube (1), and the first guiding tube (1) is symmetrically arranged with the second guiding tube (13). The insertion holes for the syndesmosis screw are arranged inside both the first guiding tube (1) and the second guiding tube (13); It is characterized in that: One slider (3) is slidably connected inside one end of the first guiding tube (1), and the slider (3) is installed inside the limiting sleeve (4). One end of the limiting sleeve (4) is slidably connected to the outside of the first guiding tube (1), and a limiting auxiliary component is arranged outside the limiting sleeve (4) for cooperating with the bone position of the foot bone to insert the syndesmosis screw; A first limiting tube (6), which is installed at the other end of the limiting sleeve (4). The first limiting tube (6) is arranged in an L-shaped pipe structure, and a first positioning rod (7) is installed inside the other end of the first limiting tube (6). A first limiting handle (8) is arranged on the outer wall surface of the first positioning rod (7), and a second limiting handle (9) is rotatably connected to the upper end of the first limiting handle (8). The inside of the second limiting handle (9) and the first limiting handle (8) is rotatably connected to the shaft rod of the limiting ring (10), and the limiting ring (10) is arranged in a work-shaped annular frame structure; A second positioning rod (11), which is installed at one end of the second limiting handle (9). The second positioning rod (11) is symmetrically arranged with the first positioning rod (7), and the second positioning rod (11) is installed inside one end of the second limiting tube (12). The other end of the second limiting tube (12) is slidably connected to one end of another slider (3), and the other end of this slider (3) is slidably connected inside the second guiding tube (13). A limiting frame (2) is arranged inside the second guiding tube (13), and an auxiliary head (14) is installed at the other end of the second guiding tube (13).

2. The auxiliary device for inserting the inferior tibiofibular screw according to claim 1, characterized in that: The limiting frame (2) slidably connected inside the first guiding tube (1) is a double-layer structure, and the inner layer of the limiting frame (2) is a conical frame structure composed of 4 petals; 3. The auxiliary device for inserting the inferior tibiofibular screw according to claim 1, characterized in that: The limiting auxiliary component includes: An installation frame (5), which is sleeved on the outer wall surface of the limiting sleeve (4). The installation frame (5) is arranged in an annular structure, and there is a groove on one side of the installation frame (5); An inner installation ring (15), which is installed in the groove of the installation frame (5). The inner installation ring (15) is arranged in a C-shaped frame structure; Limiting balls (16), which are equidistantly arranged inside the inner installation ring (15).

4. The auxiliary device for inserting the inferior tibiofibular screw according to claim 3, characterized in that: The installation frame (5) is coaxially sleeved and installed with the slider (3) and the limiting sleeve (4), and there are 2 symmetrically arranged installation frames (5).

5. The auxiliary device for implanting the inferior tibiofibular screw according to claim 1, characterized in that: The first limiting tube (6) and the second limiting tube (12) are symmetrically arranged, and the first guiding tube (1), the first limiting tube (6), the second limiting tube (12) and the second guiding tube (13) form a rectangular frame structure.

6. The auxiliary device for inserting a syndesmosis screw according to claim 1, wherein: Hole chutes are arranged on the inner sides of the first positioning rod (7) and the second positioning rod (11), and both the second positioning rod (11) and the first positioning rod (7) are rod body structures made of silica gel.

7. The auxiliary device for inserting the inferior tibiofibular screw according to claim 3, wherein: There are 2 symmetrically arranged installation inner rings (15). One end of one installation inner ring (15) is slidably connected to the outer wall surfaces of the first guiding pipe (1) and the first limiting pipe (6), and one end of the other installation inner ring (15) is slidably connected to the outer wall surfaces of the second limiting pipe (12) and the second guiding pipe (13).

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