A conveniently adjustable self-locking gripping fixator for rib fractures

Abstract

The present invention discloses a self-locking grasping and fixing device for rib fractures which is easy to adjust, comprising two clamping and rotating structures, each of which is provided with a clamping and fixing hook at both ends, and the two clamping and rotating structures are cross-arranged to form two pairs of fixing hook groups for clamping and fixing ribs with hooks facing opposite directions. The present invention also comprises a rotation adjustment structure which is arranged at the intersection position between the two clamping and rotating structures, and on which there are also a cylindrical protruding structure and a circular ring structure with a cylindrical hole groove, the cylindrical protruding structure extends into the cylindrical hole groove to realize the cross combination and relative rotation of the clamping and rotating structure one and the clamping and rotating structure two; the present invention also comprises a locking structure which comprises a locking thread structure arranged on the outside of the cylindrical protruding structure and a locking nut adapted to the locking thread structure, the locking nut rotates and moves downward while pushing the circular ring structure to approach the clamping and rotating structure one, and utilizes the friction force of close contact to lock the positional relationship between the clamping and rotating structure one and the clamping and rotating structure two.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular to the field of devices for rib fractures, and specifically is a self-locking grasping and fixing device for rib fractures which is easy to adjust. Background Art

[0002] In the prior art of fixation devices after rib fracture, whether it is a multi-segment holding structure fixation method such as Patent 203777033U - a rib bone plate; or an attached fixation method that combines a locking plate and a locking pin for fixation such as Patent 202010802000.9 - a biodegradable and absorbable magnesium alloy rib fracture fixation plate and fixation device system; both are long and difficult to perform through minimally invasive surgery. In this way, because they need to be set in a larger area of ​​the rib position, the surgical window is large and the damage to the patient is great.

[0003] Therefore, there is a need for a fixation device that is small in overall structure and can preferably be used in minimally invasive surgery, and specifically provides a self-locking grasping fixator for rib fractures that is easy to adjust. Summary of the invention

[0004] The current technical solution for holding the ribs to complete fixation in the existing technology is made of special memory materials. This material is soft at low temperatures and is attached to the position of the fractured ribs in a soft state. When it reaches body temperature, the memory material will return to its original shape and hold the ribs at the same time. The existing technology combining titanium plates and locking nails has a problem that the locking nails are short due to the flat ribs. If the titanium plates are to be fixed, more locking nails need to be densely set, but too many locking nails will affect the stability of the ribs. However, the problems with the above two methods are that the entire fixing structure is long, the covered rib area is large, the window that needs to be opened during surgery is large, and the patient's recovery time after surgery is long. The entire operation cannot be performed under minimally invasive conditions. In addition, once the instrument is inserted, it is easy to adhere to the surrounding tissues, making it particularly difficult to remove the instrument.

[0005] The present invention constructs a technical solution that can be adjusted to a clamping fixed position by rotation and locked in position after rotating to the clamping fixed position through the idea of ​​a clamping rotating structure 1 and a clamping rotating structure 2 that are cross-arranged and connected with two groups of fixed hook groups. The specific technical solution is: a self-locking gripping fixator for rib fractures that is easy to adjust, which includes:

[0006] There are two clamping and rotating structures, namely, the first clamping and rotating structure and the second clamping and rotating structure; each clamping and rotating structure is provided with a clamping and fixing hook at both ends, and the two clamping and rotating structures are arranged crosswise, so that the four clamping and fixing hooks are constructed into two pairs of fixing hook groups with hooks facing oppositely for clamping and fixing the ribs, and the two clamping and fixing hooks of each fixing hook group are one for one end of the clamping and rotating structure, and the other for the second end of the clamping and rotating structure;

[0007] The rotation adjustment structure is arranged at the intersection between the two clamping rotation structures. The rotation adjustment structure includes

[0008] A cylindrical protruding structure is disposed in the middle of the clamping and rotating structure one and is integrally connected with the clamping and rotating structure one;

[0009] The annular structure with a cylindrical hole groove is arranged in the middle of the clamping rotating structure 2 and is integrally connected with the clamping rotating structure 2. The cylindrical protruding structure extends into the cylindrical hole groove to realize the cross combination of the clamping rotating structure 1 and the clamping rotating structure 2, and the position adjustment of the clamping rotating structure 1 and the clamping rotating structure 2 is realized by relative rotation of the annular structure and the cylindrical protruding structure;

[0010] The locking structure is used to lock the positional relationship between the cylindrical protruding structure and the circular ring structure, including

[0011] A locking thread structure is arranged outside the cylindrical protruding structure;

[0012] The locking nut is adapted to the locking thread structure. The locking nut rotates along the locking thread structure and moves downward. The locking nut moves downward and pushes the annular structure to approach the clamping rotating structure 1. Finally, the clamping rotating structure 1 is in close contact with the clamping rotating structure 2, and the positional relationship between the clamping rotating structure 1 and the clamping rotating structure 2 is locked.

[0013] Furthermore, a locking ring is arranged in the cylindrical hole groove, and the locking ring is integrally connected to the ring structure, and the locking thread structure extends from the locking ring; the locking nut is arranged in the cylindrical hole groove, and the cross-section of the locking nut is a regular polygon, and the diameter of the circumscribed circle of the locking nut is larger than the inner diameter of the locking ring; through this arrangement, the locking structure can be confined as a whole inside the ring structure without increasing the volume of the overall structure.

[0014] Furthermore, the height of the locking nut is equal to the depth of the cylindrical hole; this arrangement can avoid adhesion and pain caused by tissue irritation due to the locking nut being too high.

[0015] Furthermore, the diameter of the circumscribed circle of the locking nut is smaller than the diameter of the cylindrical hole; thus, an operating instrument can be inserted between the locking nut and the cylindrical hole to perform rotational adjustment on the locking nut.

[0016] Alternatively, a locking ring is provided in the cylindrical hole groove, and the locking ring is integrally connected to the ring structure, the cross-section of the outer side of the locking nut is circular, the outer diameter of the locking nut is equal to the diameter of the cylindrical hole groove, and an operating notch is provided on the outer side wall of the locking nut, and the locking nut is rotated by an operating structure engaged with the outer side of the operating notch, and the locking ring is driven downward by the locking nut to achieve the purpose of locking the positional relationship between the clamping rotation structure one and the clamping rotation structure two.

[0017] Alternatively, a nut is arranged above the locking nut, and a through hole is provided in the middle of the nut which is not smaller than the cylindrical protruding structure; the outer diameter of the nut is larger than the diameter of the cylindrical hole groove, and an operating notch is provided on the outer edge of the nut, and the rotation locking of the locking nut is achieved by engaging an operating structure on the outside of the operating notch, and the nut drives the ring structure to move downward to achieve the purpose of locking the positional relationship between the clamping rotating structure one and the clamping rotating structure two.

[0018] The first and second clamping and rotating structures are cross-combined by extending the cylindrical protruding structure into the cylindrical hole groove, and the locking nut is sleeved on the outside of the locking threaded structure. The ring structure with the cylindrical hole groove and the cylindrical protruding structure are controlled to rotate relative to each other, so as to realize the rotation of the first and second clamping and rotating structures, and at the same time, the two clamping and fixing hooks of the same group of fixing hook groups move relatively close to each other until the two clamping and fixing hooks of each group are relatively close to each other on both sides of the fractured rib, with one group of fixing hook groups fixed on one side of the rib fracture surface and the other group of fixing hook groups fixed on the other side of the rib fracture surface. After effective close contact, the locking nut is controlled to rotate so that the first and second clamping and rotating structures are in close contact longitudinally until the positional relationship between the first and second clamping and rotating structures is locked, and at the same time, the two groups of fixing hook groups firmly fix the ribs.

[0019] Furthermore, in order to ensure the clamping stability of the fixation device and that the clamping space of the fixed structure will not be affected by the curvature of the ribs and thus affect the fixation of the ribs, the rotation locking portion is arranged in the middle of the clamping rotation structure one and the clamping rotation structure two, with the rotation locking portion as the center and the two clamping fixing hooks on each clamping rotation structure being symmetrical; the rotation locking portion has a clamping fixing state, and in the clamping fixing state, the distance between the two clamping fixing hooks on the same side of the two groups of fixing hooks is L, and L is less than 2 cm.

[0020] Furthermore, the shape of the hook bend position of each clamping and fixing hook is basically consistent with the edge curvature of the rib, and the fixing space constructed by the two clamping and rotating structures and the two groups of fixing hooks is basically consistent with the shape of the rib.

[0021] Furthermore, both the clamping and rotating structure and the clamping and fixing hook are plate-shaped structures; this structure can ensure a better clamping and fixing effect.

[0022] Furthermore, in order to achieve an effective combination of the rotation locking part, the following implementation is adopted: a through arc groove for accommodating the circular ring structure is provided on the clamping rotation structure, and the circular ring structure rotates in the arc groove. The rotation action can be well stabilized by providing the arc groove; a more preferred implementation is that an anti-slip protruding plate is provided at the bottom of the circular ring structure, and an anti-slip groove for accommodating the anti-slip protruding plate is provided on the arc groove. Two anti-slip protruding plates are provided symmetrically at the center; two anti-slip grooves are provided in the arc grooves on both sides; this arrangement can cooperate with the rotation locking part to ensure the stability of the structure.

[0023] Furthermore, because the fixation device is relatively small as a whole and is performed under minimally invasive conditions, the rotation of the clamping and rotating structure one and the clamping and rotating structure two cannot be completed by fingers, and requires the aid of a special operating structure. Therefore, it is necessary to provide a corresponding structure adapted to the operating structure on the clamping and rotating structure one and the clamping and rotating structure two to ensure that the relative rotation of the clamping and rotating structure one and the clamping and rotating structure two is completed in vitro and the locking control is performed after the appropriate position is found.

[0024] Specifically, a notch is provided on the outer edge of the circular ring structure, or an array of sockets is provided on the circular ring structure, which is used to be combined with an operating structure 1 to control the fixation or rotation of the circular ring structure through the operating structure 1; the operating structure 1 is correspondingly provided with a channel that is sleeved on the notch or a plug rod that is inserted into the socket.

[0025] A non-circular adapting structure is arranged on the outer edge or the top of the locking nut, and an operating structure 2 is arranged correspondingly, and a structure adapted to the non-circular adapting structure is arranged on the operating structure 2.

[0026] A threaded hole is provided in the cylindrical protruding structure, and a stop structure is provided in the threaded hole, and an operating structure 3 is provided correspondingly, and a threaded segment is provided on the operating structure 3, and the threaded segment stops rotating after rotating to the stop structure position, and when rotating again, it can drive the rotation of the clamping rotating structure 1. Alternatively, the threaded hole does not penetrate the cylindrical protruding structure, and when the threaded segment of the operating structure rotates to the bottom of the threaded hole, it naturally stops rotating, and when rotating again, it can drive the rotation of the clamping rotating structure 1.

[0027] Further: an insertion rod is provided on the operating structure one, and a socket is provided on the corresponding circular ring structure, the insertion rod is in close contact with the socket, and the threaded section on the operating structure three cooperates with the threaded hole on the cylindrical protruding structure, and the combination of the threaded section and the threaded hole has a stop position. The rotating handle three is combined with the main body of the operating structure three; through the combination of the above two structures, the combination of the operating structure one, the operating structure three and the fixing device can be realized in vitro. When combining, first combine the threaded section and the threaded hole of the operating structure three to the stop position, and then insert the insertion rod on the operating structure one into the socket of the circular ring structure; finally, set the middle operating structure two between the operating structure one and the operating structure three.

[0028] Beneficial effects of the present invention:

[0029] A clamping rotating structure 1 and a clamping rotating structure 2 are cross-connected to connect two groups of fixing hook groups; by rotating the positions of the clamping rotating structure 1 and the clamping rotating structure 2, and locking the positions of the two by a locking structure, it can be ensured that the fixing device is delivered to the rib position through a small incision with a small distance between the two groups of fixing hooks, and can be directly placed on the rib, and by rotating the locking nut, the two clamping fixing hooks of each group of fixing hooks are close to each other to clamp one side of the rib fracture, and the two groups can complete the fixation of the positions on both sides, thereby achieving effective fixation of the rib fracture.

[0030] The distance between the two sets of fixing hooks in the clamping and fixing state is L, and L is less than 2 cm. The smaller length can ensure that the clamping space constructed by the four fixing hooks is consistent with the spatial shape of the ribs in a shorter range, thereby ensuring the effectiveness of the clamping and not affecting the rib fixation due to rib bending.

[0031] Through the coordination of three operating structures, and the close combination of operating structure one with the annular structure and the effective combination of operating structure three with the threaded hole on the cylindrical protruding structure, the combination of the operating structure and the fixing device can be realized in vitro, which can greatly reduce the time of minimally invasive surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the combined structure of the operating structure and the fixing device of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of the operating device of the present invention being arranged at the ribs;

[0034] Figure 3 This is a schematic diagram of the structure of the fixing device of the present invention in a clamping and fixing state;

[0035] Figure 4 This is a schematic diagram of the structure of a fixing device with anti-slip protrusions according to the present invention;

[0036] Figure 5 It is a structural schematic diagram of a clamping and rotating structure of a fixing device of the present invention;

[0037] Figure 6 It is a structural schematic diagram of a half clamping and rotating structure with an anti-slip groove of the present invention;

[0038] Figure 7 It is a schematic diagram of the second structure of the clamping and rotating structure with a locking nut of the fixing device of the present invention;

[0039] Figure 8 It is a schematic diagram of the second structure of the clamping and rotating structure of the fixing device of the present invention without a locking nut;

[0040] Fig. 9 The second top view of the clamping and rotating structure with the anti-slip protruding plate of the present invention is shown;

[0041] Fig.10 It is a schematic diagram of the combined state structure of various operation structures of the present invention;

[0042] Fig.11 It is a structural schematic diagram of the operating structure of the present invention;

[0043] Fig.12 This is a schematic diagram of the second operating structure of the present invention;

[0044] Fig.13 This is a structural schematic diagram of the operating structure 2 of the present invention without the rotating handle 2;

[0045] Fig.14 It is a schematic diagram of the third structure of the operating structure of the present invention;

[0046] Fig.15 This is a structural schematic diagram of the operating structure 3 of the present invention without the rotating handle 3;

[0047] Description of main reference numerals

[0048] 1. Fixing hook group; 11. Clamping and fixing hook; 21. Clamping and rotating structure one; 22. Clamping and rotating structure two; 31. Cylindrical protruding structure; 32. Ring structure; 321. Cylindrical hole groove; 322. Locking ring; 33. Locking thread structure; 34. Locking nut; 35. Arc groove; 36. Anti-slip protruding plate; 37. Anti-slip groove; 41. Insertion hole; 42. Threaded hole; 51. Operating structure one; 511. Operating handle; 512. Insert rod; 52. Operating structure two; 521. Rotating handle two; 522. Through channel; 523. Limiting ring; 524. Non-circular combination structure two; 53. Operating structure three; 531. Rotating handle three; 532. Threaded section; 533. Non-circular combination structure three; 6. Anti-slip protrusion. DETAILED DESCRIPTION

[0049] The present invention constructs a technical solution that can be adjusted to a clamping fixed position by rotation and locked in position after rotating to the clamping fixed position through the idea of ​​a clamping rotating structure 1 21 and a clamping rotating structure 2 22 that are cross-arranged and connected with two groups of fixed hook groups 1.

[0050] The specific technical solution is: Figure 1-4 , Figure 5 , Figure 7 , Figure 8; A self-locking grasping and fixing device for rib fractures that is easy to adjust, comprising: two clamping and rotating structures, namely a clamping and rotating structure 1 21 and a clamping and rotating structure 22; a clamping and fixing hook 11 is provided at both ends of each clamping and rotating structure, and the two clamping and rotating structures are cross-arranged so that the four clamping and fixing hooks 11 are constructed into two pairs of fixing hook groups 1 with hooks facing opposite to each other for clamping and fixing the ribs, and one of the two clamping and fixing hooks 11 of each fixing hook group 1 is at the end of the clamping and rotating structure 1 21, and the other is at the end of the clamping and rotating structure 22; a rotation adjustment structure is arranged at the intersection position between the two clamping and rotating structures, and the rotation adjustment structure includes a cylindrical protruding structure 31, which is arranged in the middle of the clamping and rotating structure 1 21 and is integrally connected to the clamping and rotating structure 1 21; and a circular ring structure 32 with a cylindrical hole groove 321, which is arranged in the middle of the clamping and rotating structure 22 and is connected to the clamping and rotating structure The two 22 are connected as one body, and the cylindrical protrusion structure 31 extends into the cylindrical hole groove 321 to realize the cross combination of the clamping rotation structure 1 21 and the clamping rotation structure 2 22, and the position adjustment of the clamping rotation structure 1 21 and the clamping rotation structure 2 22 is realized by the relative rotation between the annular structure 32 and the cylindrical protrusion structure 31; there is also a locking structure for locking the position relationship between the cylindrical protrusion structure 31 and the annular structure 32, the locking structure includes a locking thread structure 33, which is arranged on the outside of the cylindrical protrusion structure 31; and a locking nut 34, which is adapted to the locking thread structure 33, the locking nut 34 rotates along the locking thread structure 33 and moves downward, and the locking nut 34 moves downward and pushes the annular structure 32 to approach the clamping rotation structure 1 21, and finally the clamping rotation structure 1 21 is in close contact with the clamping rotation structure 2 22, and the position relationship between the clamping rotation structure 1 21 and the clamping rotation structure 2 22 is locked.

[0051] A more preferred embodiment is to refer to Figure 8 ; A locking ring 322 is arranged in the cylindrical hole groove 321, and the locking ring 322 is integrally connected with the ring structure 32, and the locking thread structure 33 extends from the locking ring 322; a locking nut 34 is arranged in the cylindrical hole groove 321, and the cross-section of the locking nut 34 is a regular polygon, and the diameter of the circumscribed circle of the locking nut 34 is larger than the inner diameter of the locking ring 322; through this arrangement, the locking structure can be confined as a whole inside the ring structure 32 without increasing the volume of the overall structure.

[0052] In a more preferred embodiment, the height of the locking nut 34 is equal to the depth of the cylindrical hole 321; this arrangement can avoid adhesion and pain caused by tissue irritation due to the locking nut 34 being too high.

[0053] In a more preferred embodiment, the diameter of the circumscribed circle of the locking nut 34 is smaller than the diameter of the cylindrical hole 321 ; thus, an operating instrument can be inserted between the locking nut 34 and the cylindrical hole 321 to rotate and adjust the locking nut 34 .

[0054] Alternatively, a locking ring 322 is provided in the cylindrical hole groove 321, and the locking ring 322 is integrally connected to the ring structure 32, the cross-section of the outer side of the locking nut 34 is circular, the outer diameter of the locking nut 34 is equal to the diameter of the cylindrical hole groove 321, and an operating notch is provided on the outer side wall of the locking nut 34, and the locking nut 34 is rotated by an operating structure engaged with the outer side of the operating notch, and the locking ring 322 is driven downward by the locking nut 34 to achieve the purpose of locking the positional relationship between the clamping rotating structure 1 21 and the clamping rotating structure 2 22.

[0055] Alternatively, a nut is arranged above the locking nut 34, and a through hole no smaller than the cylindrical protruding structure 31 is provided in the middle of the nut; the outer diameter of the nut is larger than the diameter of the cylindrical hole groove 321, and an operating notch is provided on the outer edge of the nut, and the rotation locking of the locking nut 34 is achieved by engaging an operating structure on the outside of the operating notch, and the nut drives the ring structure 32 to move downward to achieve the purpose of locking the positional relationship between the clamping rotating structure 1 21 and the clamping rotating structure 2 22.

[0056] The cylindrical protruding structure 31 is extended into the cylindrical hole groove 321 to realize the cross combination of the clamping rotating structure 1 21 and the clamping rotating structure 22, and the locking nut 34 is sleeved on the outside of the locking threaded structure 33, and the ring structure 32 with the cylindrical hole groove 321 and the cylindrical protruding structure 31 are controlled to rotate relative to each other, so as to realize the rotation of the clamping rotating structure 1 21 and the clamping rotating structure 22, and at the same time, the two clamping fixing hooks 11 of the same group of fixing hook groups 1 are relatively close to each other, until the two clamping fixing hooks 11 of each group are relatively close to the two sides of the fractured rib, one group of fixing hook groups 1 is fixed on one side of the rib fracture surface, and the other group of fixing hook groups 1 is fixed on the other side of the rib fracture surface. After effective close contact, the locking nut 34 is controlled to rotate, so that the clamping rotating structure 1 21 and the clamping rotating structure 2 22 are in close contact longitudinally, until the positional relationship between the clamping rotating structure 1 21 and the clamping rotating structure 22 is locked, and at the same time, the two groups of fixing hook groups 1 firmly fix the rib.

[0057] A more preferred embodiment is that the rotation locking part is arranged in the middle of the clamping rotation structure 1 21 and the clamping rotation structure 2 22, and the two clamping fixing hooks 11 on each clamping rotation structure are symmetrical with the rotation locking part as the center; the two groups of fixing hook groups 1 have two states, one is the entry state, and the other is the clamping fixing state. In the entry state, the spacing distance between the two clamping fixing hooks 11 of each group of fixing hook groups 1 is greater than the rib width, and the distance between the two clamping fixing hooks 11 on the same side of the two groups of fixing hook groups 1 in the clamping fixing state is L, and L is less than 2cm. In this way, the clamping space constructed by the four fixing hooks is basically consistent with the shape of the outer side of the ribs in a shorter range, and the rib fixation will not be affected by the bending of the ribs in the constructed straight space. In addition, this small size can also meet the needs of minimally invasive surgery. More preferably, the clamping rotation structure 1 21 and the clamping rotation structure 2 22 are both straight rod or straight plate structures.

[0058] Alternatively, the clamping and rotating structure 1 21 and the clamping and rotating structure 2 22 are set as corresponding curved structures according to the curvature of the ribs. This setting can ensure that the curvature is set as needed, but this type of structure is prepared by 3D printing according to the patient's condition; to ensure effective anastomosis and fixation effects.

[0059] A more preferred implementation is that the shape of the hook bend position of each clamping and fixing hook 11 is basically consistent with the edge bend of the rib, and the fixing space constructed by the two clamping and rotating structures and the two groups of fixing hook groups 1 is basically consistent with the shape of the rib. This method can ensure the fit of each part during fixation and avoid shaking during the fixation process.

[0060] A more preferred embodiment is that the clamping and rotating structure is a plate-shaped structure; this structure can ensure a better clamping and fixing effect.

[0061] When in use, the locking nut 34 is matched and combined with the locking screw structure so that the clamping rotation structure 1 21 is in contact with the clamping rotation structure 2 22, but can still rotate relative to each other; after finding the clamping fixed position, continue to rotate the locking nut 34 to lock the positional relationship between the clamping rotation structure 1 21 and the clamping rotation structure 2 22. The distance between the two clamping and fixing hooks 11 on the same side of the two groups of fixing hook groups 1 in the entry state is small, and the distance between the two clamping and fixing hooks 11 in the same group is large, which can ensure that the entire instrument enters the surgical position through a smaller incision, and can achieve minimally invasive insertion. In this state, the spacing distance between the two clamping and fixing hooks 11 of the same group of fixing hook groups 1 is greater than the rib width. This arrangement can ensure that the instrument falls into the fractured rib, the clamping rotation structure is above the rib, and the lower hook edge of the clamping and fixing hook 11 is arranged above the rib; after entering, the instrument is adjusted from the entry state to the fixed state by rotating the locking nut 34, and the distance between the fixing hooks in the fixed state becomes larger, but the spacing distance between the two clamping and fixing hooks 11 of the same group of fixing hook groups 1 is equal to the rib width, so that the two clamping and fixing hooks 11 of the same group of fixing hook groups 1 are close to the rib to clamp and fix the rib, and the two fixing hook groups 1 are respectively arranged on both sides of the rib fracture surface, and this operation is also completed under the observation of the thoracoscope, which can further ensure that the incision of the entire operation is small and the patient recovers quickly.

[0062] A more preferred embodiment is to refer to Figure 6 and Fig. 9 The clamping rotating structure 21 is provided with an arc groove 35 for accommodating the circular ring structure 32. The circular ring structure 32 rotates in the arc groove 35. The arc groove 35 can stabilize the rotation. A more preferred embodiment is that an anti-slip protruding plate 36 is provided at the bottom of the circular ring structure 32, and an anti-slip groove 37 for accommodating the anti-slip protruding plate 36 is provided on the arc groove 35. Two anti-slip protruding plates are provided symmetrically at the center; two anti-slip grooves 37 are provided in the arc grooves 35 on both sides; this arrangement can cooperate with the rotation locking part to ensure the stability of the structure.

[0063] A more preferred embodiment is that the anti-slip protruding plate 36 is an arc plate, and the arc of the arc plate is A°; the arc of the portion where the clamping rotating structure 21 is connected to the arc groove 35 is B°, and the arc of the portion where the clamping rotating structure 22 is connected to the circular ring structure 32 is C°; the arc plate contacts the clamping rotating structure 22; A≤180-BC; wherein preferably A=B=C is 60°; this angle setting can better achieve the combination. When combining, firstly sleeve the circular ring structure 32 on the position where the anti-slip protruding plate 36 is not set on the cylindrical protruding structure 31, and then rotate it so that the anti-slip protruding plate 36 enters the anti-slip groove 37 to achieve a preliminary combination, and then match the locking nut 34 with the locking screw structure.

[0064] In a more preferred embodiment, the entire fixation device is made of absorbable material. This arrangement can avoid secondary damage to the patient caused by the removal of the fixation device, and absorption can also avoid tissue adhesion caused by long-term placement in the body.

[0065] A more preferred embodiment is to refer to Figure 4 ; Anti-skid protrusions 6 are provided on the inner sides of the clamping and rotating structure and the clamping and fixing hooks, and the inner side surfaces are the surfaces contacting the ribs; the anti-skid protrusions 6 are pointed cone-shaped structures similar to the shape of a pyramid; the entire clamping and rotating structure is provided with anti-skid protrusions, and this arrangement can further improve the gripping force by piercing the tip into the ribs, thereby ensuring the stability of the fixed position after fixation and avoiding slippage.

[0066] A more preferred implementation is that, because the fixation device is smaller as a whole and is completed under minimally invasive conditions, the rotation of the clamping and rotating structure 1 21 and the clamping and rotating structure 2 22 cannot be completed by fingers, and needs to be completed with the help of a special operating structure. Therefore, it is necessary to set a corresponding structure adapted to the operating structure on the clamping and rotating structure 1 21 and the clamping and rotating structure 2 22 to ensure that the relative rotation of the clamping and rotating structure 1 21 and the clamping and rotating structure 2 22 is completed in vitro and the locking control is achieved after finding the appropriate position.

[0067] Specifically, refer to Figure 10-15 A notch is provided on the outer edge of the circular ring structure 32, or an array of sockets 41 are provided on the circular ring structure 32, which is used to be combined with an operating structure 51, and the fixing or rotation of the circular ring structure 32 is controlled by the operating structure 51; the operating structure 51 is correspondingly provided with a hole sleeved on the notch or an insertion rod 512 inserted into the socket 41.

[0068] A non-circular adapting structure is provided on the outer edge or the top of the locking nut 34 , and a second operating structure 52 is provided correspondingly, and a structure adapted to the non-circular adapting structure is provided on the second operating structure 52 .

[0069] A threaded hole 42 is provided in the cylindrical protruding structure 31, and a stop structure is provided in the threaded hole 42, and an operating structure 3 53 is provided correspondingly, and a threaded section 532 is provided on the operating structure 3 53, and the threaded section 532 stops rotating after rotating to the stop structure position, and when rotating again, it can drive the rotation of the clamping rotating structure 1 21. Alternatively, the threaded hole 42 does not penetrate the cylindrical protruding structure 31, and when the threaded section 532 of the operating structure rotates to the bottom of the threaded hole 42, it naturally stops rotating, and when rotating again, it can drive the rotation of the clamping rotating structure 1 21.

[0070] A more preferred embodiment is that the operating structure one 51 is provided with a sleeve structure or an insertion structure that is compatible with the circular ring structure 32 at the first end, the operating structure two 52 is provided with a sleeve structure or an insertion structure that is compatible with the locking nut 34 at the first end, and the operating structure three 53 is provided with a threaded section 532 that is compatible with the threaded hole 42 on the cylindrical protrusion structure 31 at the first end; the operating structure one 51 is a sleeve structure, and the operating structure two 52 is provided with a through channel 522; the operating structure three 53 is arranged in the through channel 522 of the operating structure two 52, and the operating structure two 52 is arranged in the operating structure one 51; the second end of the operating structure one 51 is provided with an operating handle 511 extending outward, the second end of the operating structure two 52 is provided with a rotating handle two 521 for controlling the rotation of the main body of the operating structure two 52, and the second end of the operating structure three 53 is provided with a rotating handle three 531 for controlling the rotation of the main body of the operating structure three 53. When in use, the operating handle 511 is controlled to remain stationary, and the rotating handle three 531 is controlled to rotate, so that the circular ring structure 32 and the cylindrical protrusion structure 31 combined therewith rotate relative to each other, so as to achieve the purpose of adjusting the angle of the clamping rotating structure 21 and the clamping rotating structure so that it is close to the ribs. After being close to the ribs, the operating handle 511 and the rotating handle three 531 are controlled to remain in position, and then the locking nut 34 is rotated by rotating the rotating handle two 521 to lock the position of the clamping rotating structure 21 and the clamping rotating structure.

[0071] A more preferred embodiment is to refer to Fig.11 ; The operation structure 1 51 is provided with an insertion rod 512, and the corresponding ring structure 32 is provided with an insertion hole 41, the insertion rod 512 is in close contact with the insertion hole 41, and the threaded section 532 on the operation structure 3 53 cooperates with the threaded hole 42 on the cylindrical protruding structure 31, and the threaded section 532 and the threaded hole 42 are combined to have a stop position, and the stop position is a position where the threaded section 532 and the threaded hole 42 cannot rotate relative to each other; wherein the rotating handle 3 531 and the main body of the operation structure 3 53 are combined and connected; through the combination of the above two structures, the combination of the operation structure 1 51, the operation structure 3 53 and the fixing device can be realized in vitro. When combining, first combine the threaded section 532 of the operation structure 3 53 with the threaded hole 42 to the stop position, and then insert the insertion rod 512 on the operation structure 1 51 into the insertion hole 41 of the ring structure 32; finally, set the middle operation structure 2 52 between the operation structure 1 51 and the operation structure 3 53. In a more preferred embodiment, the rotating handle three 531 is perpendicular to the main body of the operating structure three 53, and the rotating handle three 531 takes the longitudinal axis of the operating structure three 53 as the symmetry axis.

[0072] A more preferred embodiment is that the operating handle 511 is a plate-shaped handle; the above-mentioned setting method is convenient for holding and operation, and the operating handle 511 includes a vertical section perpendicular to the operating structure 51 and an inclined plate section inclined away from the direction of the fixed device, and the inclination angle range is 30-45°; the length of the inclined plate section is not less than 8 cm; this setting can facilitate the effective control of the clamping and rotating structure 22 to the greatest extent, and facilitate the rotation adjustment of the clamping and rotating structure 21 by the operating structure 2 52.

[0073] A more preferred embodiment is to refer to Figure 12-13 ; The rotating handle 2 521 is perpendicular to the main body of the operating structure 2 52, and an opening is provided on the rotating handle 2 521 for the operating structure 3 53 to pass through; this arrangement facilitates the mutual connection of the three-layer operating structures without affecting the operation. A non-circular combination structure 2 524 is provided at the second end of the operating structure 2 52, and a channel structure combined with the non-circular combination structure 2 524 is correspondingly provided on the rotating handle 2 521; the rotating handle 2 521 is combined with the main body of the operating structure 2 52 by combining, and the rotating handle 2 521 can be removed during the rotation operation so that it does not interfere with the rotation of the operating rotating handle 3 531, and it can also reduce the difficulty of preparing the entire device. The non-circular combination structure 2 524 is a regular hexagonal combination structure.

[0074] In a more preferred embodiment, the side wall of the first end of the operating structure 1 51 is provided with an array of plug rods 512, and the ring structure 32 is provided with an array of plug holes 41, and the plug holes 41 are in close contact with the plug rods 512, and the contact friction is greater than the weight of the fixing device; the second end of the rotating handle 2 521 is also provided with a limit ring 523, and when combined, the limit ring 523 contacts the side wall of the sleeve of the operating structure 1 51, and the operating structure 2 52 enters the correct position through contact. This arrangement can ensure that the operating structure 1 51 and the fixing device can be effectively combined outside the body.

[0075] A more preferred embodiment is to refer to Figure 14-15 The second end of the operating structure 3 53 is provided with a non-circular combination structure 3 533, and the rotating handle 3 531 is provided with a channel for combining with the non-circular combination structure 3 533; the difficulty of setting can be reduced by combining the rotating handle 3 531 with the main body of the operating structure 3 53. The non-circular combination structure 3 533 is a regular hexagonal combination structure.

[0076] A more preferred embodiment is that after assembly, the operating handle 511, the second rotating handle 521 and the third rotating handle 531 are arranged in sequence, and the operating handle 511 is arranged at a position closest to the fixing device.

[0077] The operation method of minimally invasive surgery is as follows: first, two small incisions are made at the position of the fractured ribs, one small incision is used to send the thoracoscope to the surgical position, and the other small incision is used to send the combined fixing device and operating structures 1 51 to 3 to the surgical position, or after the fixing device is sent to the surgical position, the operating structures 1 51 to 3 53 are sent to the surgical position through the same channel, and combined with the fixing device in the body; the four clamping and fixing hooks 11 of the fixing device are set at the positions on both sides of the ribs, and then the operating structure 1 51 is controlled to remain stationary, and the operating structure 3 53 is rotated, driving the clamping and rotating structure to rotate, so that the clamping and fixing hooks 11 are tightly attached to the ribs, and then the operating handle 511 of the operating structure 1 51 and the rotating handle 3 531 on the operating structure 3 53 are controlled to remain unchanged, and then the rotating handle 2 521 of the operating structure 2 52 is controlled to rotate the locking nut 34, so as to push the two clamping and rotating structures to approach each other in the longitudinal direction without rotating, and finally tightly lock the clamping and rotating structure that is tightly attached to the ribs.

[0078] The technical solutions in the embodiments of the present invention are clearly and completely described above through specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the above embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

Claims

1. A self-locking gripping fixator for rib fractures that is easy to adjust, characterized in that: These include, There are two clamping and rotating structures, namely, the first clamping and rotating structure and the second clamping and rotating structure; each clamping and rotating structure is provided with a clamping and fixing hook at both ends, and the two clamping and rotating structures are arranged crosswise, so that the four clamping and fixing hooks are constructed into two pairs of fixing hook groups with hooks facing oppositely for clamping and fixing the ribs, and the two clamping and fixing hooks of each fixing hook group are one for one end of the clamping and rotating structure, and the other for the second end of the clamping and rotating structure; and The rotation adjustment structure is arranged at the intersection between the two clamping rotation structures. The rotation adjustment structure includes A cylindrical protruding structure is disposed in the middle of the clamping and rotating structure one and is integrally connected with the clamping and rotating structure one; The annular structure with a cylindrical hole groove is arranged in the middle of the clamping rotating structure 2 and is integrally connected with the clamping rotating structure 2. The cylindrical protruding structure extends into the cylindrical hole groove to realize the cross combination of the clamping rotating structure 1 and the clamping rotating structure 2, and the position adjustment of the clamping rotating structure 1 and the clamping rotating structure 2 is realized by relative rotation of the annular structure and the cylindrical protruding structure; The locking structure is used to lock the positional relationship between the cylindrical protruding structure and the circular ring structure, including A locking thread structure is arranged outside the cylindrical protruding structure; and The locking nut is adapted to the locking thread structure. The locking nut rotates along the locking thread structure and moves downward. The locking nut moves downward and pushes the ring structure closer to the clamping rotation structure one. Finally, the clamping rotation structure one is in close contact with the clamping rotation structure two, and the positional relationship between the clamping rotation structure one and the clamping rotation structure two is locked.

2. The fastener according to claim 1, characterized in that: A locking ring is arranged in the cylindrical hole groove, and the locking ring is integrally connected with the ring structure, and the locking thread structure extends from the locking ring; a locking nut is arranged in the cylindrical hole groove, the cross section of the locking nut is a regular polygon, and the diameter of the circumscribed circle of the locking nut is larger than the inner diameter of the locking ring.

3. The fastener according to claim 2, characterized in that: The diameter of the circumscribed circle of the locking nut is smaller than the diameter of the cylindrical hole groove; the height of the locking nut is equal to the depth of the cylindrical hole groove.

4. The fastener according to claim 1, characterized in that: A locking ring is arranged in the cylindrical hole groove and is integrally connected with the ring structure. The cross section of the outer side of the locking nut is circular. The outer diameter of the locking nut is equal to the diameter of the cylindrical hole groove, and an operating notch is arranged on the outer side wall of the locking nut.

5. The fastener according to claim 1, characterized in that: A nut is arranged above the locking nut, and a through hole no smaller than the cylindrical protruding structure is arranged in the middle of the nut; the outer diameter of the nut is larger than the diameter of the cylindrical hole groove, and an operating notch is arranged on the outer edge of the nut.

6. The fastener according to claim 1, characterized in that: The rotation locking part is arranged in the middle of the clamping rotation structure 1 and the clamping rotation structure 2. With the rotation locking part as the center, the two clamping fixing hooks on each clamping rotation structure are symmetrical. The two groups of fixing hooks have two states, one is the entry state and the other is the clamping fixing state. In the entry state, the interval distance between the two clamping fixing hooks of each group of fixing hooks is greater than the rib width. In the clamping fixing state, the distance between the two clamping fixing hooks on the same side of the two groups of fixing hooks is L, and L is less than 2cm.

7. The fastener according to claim 5, characterized in that: The shape of the hook bend position of each clamping and fixing hook is basically consistent with the edge curvature of the rib, and the fixing space constructed by the two clamping and rotating structures and the two groups of fixing hook groups is basically consistent with the shape of the rib.

8. The fastener according to claim 1, characterized in that: The clamping rotating structure and the clamping fixing hook are plate-shaped structures.

9. The fastener according to any one of claims 1 to 8, characterized in that: The entirety of the fixation device is made of absorbable material; Anti-skid protrusions are arranged on the inner sides of the clamping rotating structure and the clamping fixing hook, and the anti-skid protrusions are of a pointed cone structure.

10. The fastener according to any one of claims 1 to 8, characterized in that: A notch is provided on the outer edge of the circular ring structure, or an array of holes is provided on the circular ring structure, which is used to be combined with the operating structure 1, and the fixing or rotation of the circular ring structure is controlled by the operating structure 1; the operating structure 1 is correspondingly provided with a hole sleeved on the notch or a plug rod inserted into the plug hole; A non-circular adapting structure is arranged on the outer edge or the top of the locking nut, and an operating structure 2 is arranged correspondingly, and a structure adapted to the non-circular adapting structure is arranged on the operating structure 2; A threaded hole is set in the cylindrical protruding structure, and a stop structure is set in the threaded hole. An operating structure three is set correspondingly. A threaded section is set on the operating structure three. The threaded section stops rotating after rotating to the stop structure position, and can drive the rotation of the clamping rotating structure one when it rotates again; or the threaded hole does not penetrate the cylindrical protruding structure, and the threaded section of the operating structure naturally stops rotating after rotating to the bottom of the threaded hole, and can drive the rotation of the clamping rotating structure one when it rotates again.

Images