External navigation stent for treating Hill-Sachs injury

Abstract

The invention provides an external navigation support for treating Hill-Sachs injury, and belongs to the technical field of medical instruments.The support comprises a first arc-shaped frame, a second arc-shaped frame, a cross rod and a sleeve fixedly arranged on one side of the first arc-shaped frame, and the outer surface of the cross rod is movably sleeved with the sleeve. The connecting end can slide on the inner wall of the adjusting rod, the push rod is not located on the inner wall of one first notch by pulling the push rod, then the connecting end is pushed to drive the prosthesis to move, the ejection end abuts against the Hill-Sachs bone sunken part, the push rod is inserted into the inner wall of one first notch by rotating the push rod, and the position of the ejection end is fixed. Fixing interlocking screws are implanted through a plurality of through holes and fixed to the outer side of the proximal humerus internodular sulcus, and therefore when the external navigation support is used, accurate reduction of a bone recess is achieved by adjusting the supporting height and angle, it is ensured that the bone recess is accurately aligned, and the practicability of the support is improved.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to an external navigation bracket for treating Hill-Sachs injuries. Background Art

[0002] Hill-Sachs injury is a bone depression injury in the posterior part of the humerus caused by shoulder joint dislocation or shoulder joint instability, which usually leads to limited shoulder movement and pain in patients, and may affect the normal function of the shoulder joint in severe cases. The existing methods for treating Hill-Sachs injuries mainly include surgical repair and conservative treatment. Surgical treatment usually requires complex surgical operations to repair the bone depression site, while conservative treatment mainly relies on physical therapy and bracket assistance to help patients restore the stability and function of the shoulder joint.

[0003] In the treatment of Hill-Sachs injuries, the reduction of the bone depression requires the bracket to accurately adjust the height, angle and support position to ensure correct alignment of the bones. However, the designs of most existing brackets cannot provide sufficiently detailed and precise adjustments, especially for the individual needs of patients. Existing prostheses may only provide limited fixed angles and heights and cannot achieve precise reduction, thus affecting bone healing and the recovery effect of patients. Moreover, most existing brackets focus on fixation and stability and lack proper adjustment of the shoulder movement range of patients. As the recovery progresses, the shoulder joint of the patient may need to gradually increase the movement range, but most existing brackets cannot provide this progressive adjustment of the movement range, resulting in limitations in the shoulder recovery process of patients. Summary of the Invention

[0004] An external navigation bracket for treating Hill-Sachs injuries provided by the present invention, when using the external navigation bracket, precisely reduces the bone depression by adjusting the support height and angle, ensures accurate alignment with the bone depression site, and improves the practicability of the bracket. When using the bracket, the installation method of the bracket is simple and convenient to use. The bracket can adjust its position to gradually adapt the shoulder to different movement ranges, and can gradually increase the flexibility and function of shoulder movement during the recovery process to help the patient gradually restore the normal shoulder movement range.

[0005] To achieve the above object, the present invention adopts the following technical solution: An external navigation bracket for treating Hill-Sachs injuries, the bracket includes: a first arc-shaped frame and a second arc-shaped frame, A cross bar, fixedly arranged on one side of the first arc-shaped frame, and a sleeve is movably sleeved on the outer surface of the cross bar. The sleeve is sleeved on the outer surface of the cross bar and can rotate on the outer surface of the cross bar; The support plate is fixedly arranged on the outer surface of the sleeve, and an adjusting rod is fixedly arranged on one side of the support plate. Rotating the support plate drives the adjusting rod to rotate; The connecting end is movably embedded in the inner wall of the adjusting rod, and a prosthesis is arranged on one side of the connecting end. The connecting end can slide on the inner wall of the adjusting rod; A plurality of first notches are formed on the outer surface of the adjusting rod, and a push rod is movably embedded in the inner wall of one of the first notches. By pulling the push rod, the push rod is not located at the inner wall of one of the first notches, and then pushing the connecting end drives the prosthesis to move; The fixing nut is fixedly arranged on the side of the second arc-shaped frame close to the cross bar, and a first screw rod is threadedly embedded in the inner wall of the fixing nut. The first screw rod is combined in the thread groove, further fixing the position of the sleeve by the first screw rod.

[0006] As a further improvement of the present invention: A jacking end is fixedly arranged at one end of the prosthesis, a plurality of through holes are formed on one side of the jacking end, a thread groove is formed on the inner wall of the sleeve, the push rod is fixedly arranged on the outer surface of the connecting end, and a rotating plate is fixedly arranged on one side of the first screw rod. Pushing the connecting end drives the prosthesis to move, so that the jacking end abuts against the Hill-Sachs bone depression.

[0007] As a further improvement of the present invention: A round rod is fixedly arranged on the inner wall of the first arc-shaped frame, a support plate is movably sleeved on the outer surface of the round rod, one side of the support plate is fixedly arranged on one side of the second arc-shaped frame, and a plurality of first telescopic rods are fixedly arranged on the inner walls of the first arc-shaped frame and the second arc-shaped frame. The support plate can rotate on the outer surface of the round rod, and further the second arc-shaped frame can rotate. By rotating the second arc-shaped frame, the two second screw rods are inserted into the inner walls of the two connecting plates, so that one side of the first arc-shaped frame and the second arc-shaped frame are in contact.

[0008] As a further improvement of the present invention: A second telescopic rod is movably sleeved on the outer surface of each of the plurality of first telescopic rods, a spring is movably sleeved on the outer surface of each of the plurality of second telescopic rods, and each of the plurality of second telescopic rods can slide in the inner wall of each of the plurality of first telescopic rods.

[0009] As a further improvement of the present invention: The plurality of second telescopic rods are evenly divided into two groups, a pressing plate is fixedly arranged on one side of each of the two groups of second telescopic rods, a foam gasket is fixedly arranged on one side of each of the two pressing plates facing each other, and the plurality of second telescopic rods slide into the inner walls of the plurality of first telescopic rods to squeeze the plurality of springs. When the plurality of first telescopic rods are squeezed, a reverse acting force will be generated, further pushing the two pressing plates reversely. The first arc-shaped frame and the second arc-shaped frame are fixed at the upper arm position by the two foam gaskets.

[0010] As a further improvement of the present invention: Two second screws are fixedly arranged on one side of the first arc-shaped frame. Connecting plates are movably sleeved on the outer surfaces of the two second screws. One side of the two connecting plates is fixedly arranged on one side of the second arc-shaped frame. Locking nuts are threadedly sleeved on the outer surfaces of the two second screws. By rotating the two locking nuts, the two locking nuts are made to closely adhere to one side of the two connecting plates, connecting the first arc-shaped frame and the second arc-shaped frame together.

[0011] As a further improvement of the present invention: A bottom rod is fixedly arranged on the outer surface of the first arc-shaped frame. A rotating cylinder is arranged on the outer surface of the bottom rod through a bearing. An adjusting rod is threadedly embedded in the inner wall of the rotating cylinder. One end of the adjusting rod is fixedly provided with a sliding plate. The two sides of the sliding plate are slidably provided with groove plates. A plurality of second notches are formed on both sides of the groove plates. The sliding plate can slide on the inner wall of the groove plate. The insertion plate is taken out from above the sliding plate. By sliding the sliding plate up and down, the adjusting rod is further driven to move, further causing the first arc-shaped frame to move up and down. When the first arc-shaped frame moves up and down, the arm will move up and down, gradually changing the range of motion of the shoulder and helping to relieve the shoulder burden. The rotating cylinder can rotate through the bearing. When the rotating cylinder rotates, the bottom rod does not rotate. By rotating the rotating cylinder, the rotating cylinder moves to different positions on the outer surface of the adjusting rod. When the rotating cylinder moves, the first arc-shaped frame is driven to move by the bottom rod, further changing the adduction position of the arm and helping the recovery after Hill-Sachs injury surgery.

[0012] As a further improvement of the present invention: An insertion plate is movably embedded in the inner wall of the sliding plate. The insertion plate is matched with any one of the second notches. A first fixing plate is fixedly arranged on one side of the second notch. Two first elastic bands are fixedly arranged on the outer surface of the first fixing plate. By pulling the two first elastic bands, the two sleeves are sleeved on the outer surfaces of the fixing rods on the surfaces of the two support plates, thereby fixing the support on the human body.

[0013] As a further improvement of the present invention: Sleeves are fixedly arranged on one side of the two first elastic bands. Fixing rods are sleeved on the inner walls of the two sleeves. The plurality of fixing rods are evenly divided into two groups. Support plates are fixedly arranged on one side of the two groups of fixing rods.

[0014] As a further improvement of the present invention: on one side of the two support plates, a second fixing plate is fixedly arranged, on one side of the second fixing plate, a second elastic band is fixedly arranged, on one side of the second fixing plate, a plurality of fixing buckles are fixedly arranged, the second elastic band is arranged on the outer surface of one of the fixing buckles, and a gasket is fixedly arranged at the inner wall of the second fixing plate. Place the second fixing plate at the position of the patient's uninjured shoulder. The gasket is soft and can protect the shoulder. Pull the second elastic band and buckle it on the surface of the fixing buckle to fix the position of the second elastic band. By buckling on the surfaces of different fixing buckles, it is convenient to fix people with different body types.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. In the present invention, when using the external navigation bracket, the sleeve is sleeved on the outer surface of the cross bar. The sleeve can rotate on the outer surface of the cross bar. At this time, by rotating the support plate, the adjusting rod is driven to rotate, further aligning the ejecting end with the intertubercular sulcus of the proximal humerus. The support plate can rotate on the outer surface of the round rod, and further the second arc-shaped frame can rotate. By rotating the second arc-shaped frame, the two second screw rods are inserted into the inner walls of the two connecting plates, so that one side of the first arc-shaped frame and the second arc-shaped frame are in contact. By using a wrench to rotate the rotating plate to drive the first screw rod to rotate, further the first screw rod rotates inside the fixed nut. One end of the first screw rod moves towards the sleeve side. After the angle of the ejecting end is adjusted, the rotating first screw rod is inserted into the inner wall of the sleeve. At this time, a medical staff member fixes the support plate with one hand, and the support plate remains stationary. The first screw rod is combined in the thread groove, further fixing the position of the sleeve by the first screw rod, and then fixing the position of the support plate, so that the ejecting end is fixed at a suitable angle. The connecting end can slide inside the adjusting rod. By pulling the push rod, the push rod is not inside the inner wall of one of the first notches, and then pushing the connecting end to drive the prosthesis to move, so that the ejecting end abuts against the Hill-Sachs bone depression. When rotating the push rod to insert it into the inner wall of one of the first notches, the position of the ejecting end is fixed. At this time, fixed locking screws can be implanted through a plurality of through holes and fixed on the outside of the intertubercular sulcus of the proximal humerus. Therefore, when using the external navigation bracket, by adjusting the support height and angle, accurate reduction of the bone depression is achieved, ensuring accurate alignment with the bone depression site and improving the practicality of the bracket.

[0016] 2. In the present invention, when using the bracket, two second screws are inserted into the inner walls of two connecting plates. At this time, by rotating two locking nuts, the two locking nuts are made to closely adhere to one side of the two connecting plates, connecting the first arc-shaped frame and the second arc-shaped frame together. Moreover, multiple second telescopic rods can slide inside the inner walls of multiple first telescopic rods respectively. When the first arc-shaped frame and the second arc-shaped frame are combined together, the upper arm exerts a thrust on the two foam pads, further causing multiple second telescopic rods to slide into the inner walls of multiple first telescopic rods, squeezing multiple springs. When multiple first telescopic rods are squeezed, they will generate a reaction force, further pushing two pressing plates in the opposite direction. The first arc-shaped frame and the second arc-shaped frame are fixed at the upper arm position through the two foam pads. The two foam pads are flexible and protect the fixed position on the upper arm. Thus, when using the bracket, the installation method of the bracket is simple and convenient to use.

[0017] 3. In the present invention, when fixing the bracket on the human body, place the second fixing plate at the position of the patient's uninjured shoulder. The gasket is flexible and protects the shoulder. The second elastic band and two first elastic bands have elasticity. By pulling the second elastic band, buckle the second elastic band on the surface of one of the fixing buckles. Pull the two first elastic bands and put the two sleeves on the outer surfaces of the fixing rods on the surfaces of the two support plates, thereby fixing the bracket on the human body. When in use, the sliding plate can slide inside the inner wall of the groove plate. Take out the insertion plate from the sliding plate. By sliding the upper and lower sliding plates, further drive the adjusting rod to move, further causing the first arc-shaped frame to move up and down. When the first arc-shaped frame moves up and down, it will drive the arm to move up and down, gradually changing the range of motion of the shoulder, helping to reduce the shoulder burden. The rotating cylinder can rotate through the bearing. When the rotating cylinder rotates, the bottom rod does not rotate. By rotating the rotating cylinder, the rotating cylinder moves to different positions on the outer surface of the adjusting rod. When the rotating cylinder moves, drive the first arc-shaped frame to move through the bottom rod, further changing the adduction position of the arm, helping the recovery after Hill-Sachs injury surgery. Thus, when using the bracket, the bracket can adjust its position, enabling the shoulder to gradually adapt to different ranges of motion, increasing the flexibility and function of shoulder movement step by step during the recovery process, and helping the patient gradually restore the normal range of motion of the shoulder joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a side view three-dimensional structure schematic diagram of an external navigation bracket for treating Hill-Sachs injury proposed by the present invention.

[0019] Figure 2 It is a side view three-dimensional structure schematic diagram of an external navigation bracket for treating Hill-Sachs injury proposed by the present invention.

[0020] Figure 3 It is a side view three-dimensional structure schematic diagram of an external navigation bracket for treating Hill-Sachs injury proposed by the present invention.

[0021] Figure 4 This is a schematic three-dimensional structure diagram of the arc-shaped frame in an external navigation bracket for treating Hill-Sachs injuries proposed by the present invention.

[0022] Figure 5 This is a schematic three-dimensional structure diagram of the arc-shaped frame in an external navigation bracket for treating Hill-Sachs injuries proposed by the present invention.

[0023] Figure 6 This is a schematic three-dimensional structure diagram of the second arc-shaped frame after rotation in an external navigation bracket for treating Hill-Sachs injuries proposed by the present invention.

[0024] Figure 7 This is a schematic three-dimensional structure diagram of the prosthesis in an external navigation bracket for treating Hill-Sachs injuries proposed by the present invention.

[0025] Figure 8 This is an external navigation bracket for treating Hill-Sachs injuries proposed by the present invention Figure 2 Enlarged view of A.

[0026] Figure 9 This is an external navigation bracket for treating Hill-Sachs injuries proposed by the present invention Figure 3 Enlarged view of B.

[0027] Figure 10 This is an external navigation bracket for treating Hill-Sachs injuries proposed by the present invention Figure 3 Enlarged view of C.

[0028] Figure 11 This is a schematic diagram of the navigation bracket and the prosthesis after connection at the proximal humeral tubercle of the present invention.

[0029] Legend Explanation: 1. First arc-shaped frame; 2. Second arc-shaped frame; 201. Cross bar; 202. Sleeve; 203. Support plate; 204. Adjusting rod; 205. Connection end; 206. Prosthesis; 207. Ejection end; 208. Through hole; 209. Push rod; 210. First notch; 211. Fixed nut; 212. First screw rod; 213. Rotating plate; 214. Threaded groove; 3. Round rod; 301. Support plate; 302. Second screw rod; 303. First telescopic rod; 304. Second telescopic rod; 305. Pressing plate; 306. Foam pad; 307. Spring; 308. Locking nut; 309. Connection plate; 4. Bottom rod; 401. Rotating cylinder; 402. Adjusting rod; 403. Slide plate; 404. Grooved plate; 405. Insertion plate; 406. Notch; 407. First fixing plate; 408. First elastic band; 409. Collar; 410. Fixed rod; 411. Support bracket plate; 412. Second fixing plate; 413. Gasket; 414. Second elastic band; 415. Fixed buckle. Detailed implementation manners

[0030] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0031] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0032] Please refer to Figures 1 to 11, this embodiment provides an external navigation stent for treating Hill-Sachs injury. The stent includes: a first arc-shaped frame 1 and a second arc-shaped frame 2, a cross bar 201 fixedly arranged on one side of the first arc-shaped frame 1, and a sleeve 202 movably sleeved on the outer surface of the cross bar 201; a support plate 203 fixedly arranged on the outer surface of the sleeve 202, and an adjusting rod 204 fixedly arranged on one side of the support plate 203; a connection end 205 movably embedded in the inner wall of the adjusting rod 204, and a prosthesis 206 arranged on one side of the connection end 205; a plurality of first notches 210 opened on the outer surface of the adjusting rod 204, and a push rod 209 movably embedded in the inner wall of one of the first notches 210, a fixing nut 211 fixedly arranged on the side of the second arc-shaped frame 2 close to the cross bar 201, and a first screw rod 212 threadedly embedded in the inner wall of the fixing nut 211, one end of the prosthesis 206 fixedly provided with an ejecting end 207, a plurality of through holes 208 opened on one side of the ejecting end 207, a thread groove 214 opened on the inner wall of the sleeve 202, the push rod 209 fixedly arranged on the outer surface of the connection end 205, and a rotating plate 213 fixedly arranged on one side of the first screw rod 212.

[0033] In use, the sleeve 202 is sleeved on the outer surface of the cross bar 201. The sleeve 202 can rotate on the outer surface of the cross bar 201. At this time, by rotating the support plate 203, the adjusting rod 204 is driven to rotate, further aligning the ejecting end 207 with the intertubercular sulcus of the proximal humerus. The support plate 301 can rotate on the outer surface of the round bar 3, and further the second arc-shaped frame 2 can rotate. By rotating the second arc-shaped frame 2, the two second screws 302 are inserted into the inner walls of the two connecting plates 309, making one side of the first arc-shaped frame 1 and the second arc-shaped frame 2 in contact. By using a wrench to rotate the rotating plate 213 to drive the first screw 212 to rotate, further the first screw 212 rotates inside the inner wall of the fixed nut 211, and one end of the first screw 212 moves towards the sleeve 202. After the angle of the ejecting end 207 is adjusted, the rotating first screw 212 is inserted into the inner wall of the sleeve 202. At this time, a medical staff member fixes the support plate 203 with one hand, and the support plate 203 remains stationary. The first screw 212 is combined with the thread groove 214, further fixing the position of the sleeve 202, and then fixing the position of the support plate 203, so that the ejecting end 207 is fixed at a suitable angle. The connecting end 205 can slide inside the inner wall of the adjusting rod 204. By pulling the push rod 209, the push rod 209 is not located inside the inner wall of one of the first notches 210, and then pushing the connecting end 205 drives the prosthesis 206 to move, making the ejecting end 207 abut against the Hill-Sachs bone depression. Then rotate the push rod 209 so that the push rod 209 is inserted into the inner wall of one of the first notches 210 to fix the position of the ejecting end 207. At this time, locking screws can be implanted through the plurality of through holes 208 and fixed on the outside of the intertubercular sulcus of the proximal humerus.

[0034] Please refer to Figures 1 to 10 , in one embodiment, a round bar 3 is fixedly arranged on the inner wall of the first arc-shaped frame 1. A support plate 301 is movably sleeved on the outer surface of the round bar 3. One side of the support plate 301 is fixedly arranged on one side of the second arc-shaped frame 2. A plurality of first telescopic rods 303 are fixedly arranged on the inner walls of both the first arc-shaped frame 1 and the second arc-shaped frame 2. The support plate 301 can rotate on the outer surface of the round bar 3, and further the second arc-shaped frame 2 can rotate. By rotating the second arc-shaped frame 2, the two second screws 302 are inserted into the inner walls of the two connecting plates 309, making one side of the first arc-shaped frame 1 and the second arc-shaped frame 2 in contact.

[0035] Please refer to Figures 1 to 10 , in one embodiment, a second telescopic rod 304 is movably sleeved on the outer surface of each of the plurality of first telescopic rods 303. A spring 307 is movably sleeved on the outer surface of each of the plurality of second telescopic rods 304. The plurality of second telescopic rods 304 can respectively slide inside the inner walls of the plurality of first telescopic rods 303.

[0036] Please refer to Figures 1 to 10, in one embodiment, the multiple second telescopic rods 304 are evenly divided into two groups. Pressing plates 305 are fixedly arranged on one side of each of the two groups of second telescopic rods 304. Foam pads 306 are fixedly arranged on the opposite sides of the two pressing plates 305. The multiple second telescopic rods 304 slide into the inner walls of the multiple first telescopic rods 303, squeezing the multiple springs 307. When the multiple first telescopic rods 303 are squeezed, they will generate a reaction force, further pushing the two pressing plates 305 in the opposite direction. The first arc-shaped frame 1 and the second arc-shaped frame 2 are fixed at the upper arm position by the two foam pads 306.

[0037] Please refer to Figures 1 to 10 , in one embodiment, two second screws 302 are fixedly arranged on one side of the first arc-shaped frame 1. Connecting plates 309 are movably sleeved on the outer surfaces of the two second screws 302. One side of each of the two connecting plates 309 is fixedly arranged on one side of the second arc-shaped frame 2. Locking nuts 308 are threadedly sleeved on the outer surfaces of the two second screws 302. By rotating the two locking nuts 308, the two locking nuts 308 are made to closely adhere to one side of the two connecting plates 309, connecting the first arc-shaped frame 1 and the second arc-shaped frame 2 together.

[0038] Please refer to Figures 1 to 10 , in one embodiment, a bottom rod 4 is fixedly arranged on the outer surface of the first arc-shaped frame 1. A rotating cylinder 401 is arranged on the outer surface of the bottom rod 4 through a bearing. An adjusting rod 402 is threadedly embedded in the inner wall of the rotating cylinder 401. One end of the adjusting rod 402 is fixedly provided with a sliding plate 403. The two sides of the sliding plate 403 are slidably arranged on a groove plate 404. A plurality of second notches 406 are formed on both sides of the groove plate 404. The sliding plate 403 can slide on the inner wall of the groove plate 404. The insertion plate 405 is taken out from the sliding plate 403. By sliding the sliding plate 403 up and down, the adjusting rod 402 is further driven to move, further causing the first arc-shaped frame 1 to move up and down. When the first arc-shaped frame 1 moves up and down, it drives the arm to move up and down, gradually changing the range of motion of the shoulder and helping to reduce the shoulder burden. The rotating cylinder 401 can rotate through the bearing. When the rotating cylinder 401 rotates, the bottom rod 4 does not rotate. By rotating the rotating cylinder 401, the rotating cylinder 401 moves to different positions on the outer surface of the adjusting rod 402. When the rotating cylinder 401 moves, the first arc-shaped frame 1 is driven by the bottom rod 4 to move, further changing the adduction position of the arm and helping with the recovery after Hill-Sachs injury surgery.

[0039] Please refer to Figures 1 to 10, in one embodiment, a plug board 405 is movably embedded in the inner wall of the skateboard 403. The plug board 405 is matched with any one of the second notches 406. A first fixing plate 407 is fixedly arranged on one side of the second notch 406. Two first elastic bands 408 are fixedly arranged on the outer surface of the first fixing plate 407. By pulling the two first elastic bands 408, the two sleeves 409 are sleeved on the outer surface of the fixing rods 410 on the surfaces of the two support plates 411, and then the support is fixed on the human body.

[0040] Please refer to Figures 1 to 10 , in one embodiment, sleeves 409 are fixedly arranged on one side of the two first elastic bands 408. Fixing rods 410 are sleeved on the inner walls of the two sleeves 409. The multiple fixing rods 410 are evenly divided into two groups. Support plates 411 are fixedly arranged on one side of the two groups of fixing rods 410.

[0041] Please refer to Figures 1 to 10 , in one embodiment, a second fixing plate 412 is fixedly arranged on one side of the two support plates 411. A second elastic band 414 is fixedly arranged on one side of the second fixing plate 412. Multiple fixing buttons 415 are fixedly arranged on one side of the second fixing plate 412. The second elastic band 414 is arranged on the outer surface of one of the fixing buttons 415. A gasket 413 is fixedly arranged on the inner wall of the second fixing plate 412. The second fixing plate 412 is placed at the position of the patient's uninjured shoulder. The gasket 413 has softness and protects the shoulder. By pulling the second elastic band 414 and buckling it on the surface of the fixing button 415, the position of the second elastic band 414 is fixed. By buckling it on the surfaces of different fixing buttons 415, it is convenient to fix people with different body types.

[0042] Working principle: When using the external navigation bracket, the sleeve 202 is sleeved on the outer surface of the cross bar 201. The sleeve 202 can rotate on the outer surface of the cross bar 201. At this time, by rotating the support plate 203, the adjusting rod 204 is driven to rotate, further aligning the ejecting end 207 with the intertubercular sulcus of the proximal humerus. The support plate 301 can rotate on the outer surface of the round rod 3, and further the second arc-shaped frame 2 can rotate. By rotating the second arc-shaped frame 2, the two second screw rods 302 are inserted into the inner walls of the two connecting plates 309, making one side of the first arc-shaped frame 1 and the second arc-shaped frame 2 in contact. By using a wrench to rotate the rotating plate 213 to drive the first screw rod 212 to rotate, further the first screw rod 212 rotates inside the inner wall of the fixing nut 211, and one end of the first screw rod 212 moves towards the sleeve 202. After the angle of the ejecting end 207 is adjusted, the rotating first screw rod 212 is inserted into the inner wall of the sleeve 202. At this time, a medical staff member fixes the support plate 203 with one hand, and the support plate 203 remains stationary. The first screw rod 212 is combined in the thread groove 214, further fixing the position of the sleeve 202, and then fixing the position of the support plate 203, so that the ejecting end 207 is fixed at a suitable angle. The connecting end 205 can slide inside the inner wall of the adjusting rod 204. By pulling the push rod 209, the push rod 209 is not located inside the inner wall of one of the first notches 210, and then pushing the connecting end 205 to drive the prosthesis 206 to move, so that the ejecting end 207 abuts against the Hill-Sachs bone depression. Then rotate the push rod 209 so that the push rod 209 is inserted into the inner wall of one of the first notches 210 to fix the position of the ejecting end 207. At this time, locking interlocking screws can be implanted through multiple through holes 208 and fixed on the outside of the intertubercular sulcus of the proximal humerus. Thus, when using the external navigation bracket, by adjusting the support height and angle, precise reduction of the bone depression is achieved, ensuring precise alignment with the bone depression site and improving the practicability of the bracket; When using the bracket, the two second screw rods 302 are inserted into the inner walls of the two connecting plates 309. At this time, by rotating the two locking nuts 308, the two locking nuts 308 are closely attached to one side of the two connecting plates 309, connecting the first arc-shaped frame 1 and the second arc-shaped frame 2 together. And multiple second telescopic rods 304 can respectively slide inside the inner walls of multiple first telescopic rods 303. When the first arc-shaped frame 1 and the second arc-shaped frame 2 are combined together, the upper arm generates a thrust on the two foam pads 306, further causing multiple second telescopic rods 304 to slide into the inner walls of multiple first telescopic rods 303 and squeezing multiple springs 307. When multiple first telescopic rods 303 are squeezed, they will generate a reaction force, further pushing the two pressing plates 305 in the opposite direction. The first arc-shaped frame 1 and the second arc-shaped frame 2 are fixed at the upper arm position through the two foam pads 306. The two foam pads 306 are soft and protect the fixed position of the upper arm. Thus, when using the bracket, the installation method of the bracket is simple and convenient to use; When fixing the bracket on the human body, place the second fixing plate 412 at the position of the patient's uninjured shoulder. The gasket 413 is flexible and protects the shoulder. The second elastic band 414 and the two first elastic bands 408 have elasticity. By pulling the second elastic band 414, the second elastic band 414 is buckled on the surface of one of the fixing buckles 415. By pulling the two first elastic bands 408, the two collars 409 are sleeved on the outer surface of the fixing rods 410 on the surfaces of the two support plates 411, thereby fixing the bracket on the human body. During use, the sliding plate 403 can slide on the inner wall of the groove plate 404. Take out the insertion plate 405 from the sliding plate 403. By sliding the upper and lower sliding plates 403, the adjusting rod 402 is further driven to move, further causing the first arc-shaped frame 1 to move up and down. When the first arc-shaped frame 1 moves up and down, the arm will move up and down, gradually changing the range of shoulder movement, helping to reduce the shoulder burden. The rotating cylinder 401 can rotate through the bearing. When the rotating cylinder 401 rotates, the bottom rod 4 does not rotate. By rotating the rotating cylinder 401, the rotating cylinder 401 moves to different positions on the outer surface of the adjusting rod 402. When the rotating cylinder 401 moves, the first arc-shaped frame 1 is driven to move by the bottom rod 4, further changing the adduction position of the arm, helping the recovery after Hill-Sachs injury surgery. Thus, when using the bracket, the position of the bracket can be adjusted to gradually adapt the shoulder to different ranges of movement, and the flexibility and function of shoulder movement can be gradually increased during the recovery process, helping the patient gradually restore the normal range of shoulder joint movement.

[0043] The above is only the preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. An external navigation stent for treating Hill-Sachs lesions, the stent comprising: The first arc frame (1) and the second arc frame (2) are characterized in that: A crossbar (201) is fixedly arranged on one side of the first arc-shaped frame (1), and a sleeve (202) is movably sleeved on the outer surface of the crossbar (201); A support plate (203) is fixedly arranged on the outer surface of the sleeve (202), and an adjustment rod (204) is fixedly arranged on one side of the support plate (203); A connecting end (205) is movably embedded in the inner wall of the adjusting rod (204), and a prosthesis (206) is provided on one side of the connecting end (205); A plurality of first notches (210) are provided on the outer surface of the adjusting rod (204), and a push rod (209) is movably embedded in the inner wall of one of the first notches (210); A fixing nut (211) is fixedly arranged on a side of the second arc-shaped frame (2) close to the crossbar (201), and a first screw rod (212) is threadedly embedded on the inner wall of the fixing nut (211).

2. The external navigation stent for treating Hill-Sachs lesions according to claim 1, characterized in that: An ejection end (207) is fixedly provided at one end of the prosthesis (206), a plurality of through holes (208) are provided on one side of the ejection end (207), a threaded groove (214) is provided on the inner wall of the sleeve (202), the push rod (209) is fixedly provided on the outer surface of the connecting end (205), and a rotating plate (213) is fixedly provided on one side of the first screw rod (212).

3. The external navigation stent for treating Hill-Sachs lesions according to claim 1, characterized in that: A round rod (3) is fixedly arranged on the inner wall of the first arc-shaped frame (1), a support plate (301) is movably sleeved on the outer surface of the round rod (3), one side of the support plate (301) is fixedly arranged on one side of the second arc-shaped frame (2), and a plurality of first telescopic rods (303) are fixedly arranged on the inner walls of both the first arc-shaped frame (1) and the second arc-shaped frame (2).

4. The external navigation stent for treating Hill-Sachs lesions according to claim 3, characterized in that: A second telescopic rod (304) is movably sleeved on the outer surfaces of the plurality of first telescopic rods (303), and a spring (307) is movably sleeved on the outer surfaces of the plurality of second telescopic rods (304).

5. The external navigation stent for treating Hill-Sachs lesions according to claim 4, characterized in that: The plurality of second telescopic rods (304) are evenly divided into two groups, one side of the two groups of second telescopic rods (304) is fixedly provided with a pressing plate (305), and the opposite sides of the two pressing plates (305) are fixedly provided with a foam pad (306).

6. The external navigation stent for treating Hill-Sachs lesions according to claim 1, characterized in that: Two second screw rods (302) are fixedly provided on one side of the first arc-shaped frame (1), and connecting plates (309) are movably sleeved on the outer surfaces of the two second screw rods (302). One side of the two connecting plates (309) is fixedly provided on one side of the second arc-shaped frame (2), and locking nuts (308) are threadedly sleeved on the outer surfaces of the two second screw rods (302).

7. The external navigation stent for treating Hill-Sachs lesions according to claim 1, characterized in that: A bottom rod (4) is fixedly arranged on the outer surface of the first arc-shaped frame (1); a rotating cylinder (401) is arranged on the outer surface of the bottom rod (4) via a bearing; an adjusting rod (402) is threadedly embedded on the inner wall of the rotating cylinder (401); a sliding plate (403) is fixedly arranged at one end of the adjusting rod (402); groove plates (404) are slidably arranged on both sides of the sliding plate (403); and a plurality of second notches (406) are provided on both sides of the groove plate (404).

8. The external navigation stent for treating Hill-Sachs lesions according to claim 7, characterized in that: An inserting plate (405) is movably embedded in the inner wall of the slide plate (403), and the inserting plate (405) matches any second notch (406). A first fixing plate (407) is fixedly arranged on one side of the second notch (406), and two first elastic bands (408) are fixedly arranged on the outer surface of the first fixing plate (407).

9. The external navigation stent for treating Hill-Sachs lesions according to claim 8, characterized in that: A collar (409) is fixedly provided on one side of each of the two first elastic bands (408), and a fixing rod (410) is sleeved on the inner wall of each of the two collars (409). The plurality of fixing rods (410) are evenly divided into two groups, and a bracket plate (411) is fixedly provided on one side of each of the two groups of fixing rods (410).

10. The external navigation stent for treating Hill-Sachs lesions according to claim 9, characterized in that: A second fixing plate (412) is fixedly provided on one side of the two bracket plates (411), a second elastic band (414) is fixedly provided on one side of the second fixing plate (412), a plurality of fixing buckles (415) are fixedly provided on one side of the second fixing plate (412), the second elastic band (414) is provided on the outer surface of one of the fixing buckles (415), and a gasket (413) is fixedly provided on the inner wall of the second fixing plate (412).

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