Surgical sternum folding fixator and use method thereof

Abstract

The invention relates to the technical field of medical instruments, and discloses a sternum folding fixator for surgery, which comprises a main body, a male hook plate is arranged at the bottom of one end of the main body, a fixing mechanism is arranged on the main body, the fixing mechanism comprises an elastic plug and a female hook plate, the elastic plug is arranged in the main body, and the female hook plate is arranged in the main body. The female hook plate is connected to the end, away from the male hook plate, of the elastic plug, a sliding mechanism is arranged on the fixing mechanism and comprises a child hook plate, the child hook plate is arranged on the inner side wall, facing the male hook plate, of the female hook plate, one end of the child hook plate is inserted into the elastic plug, and an auxiliary mechanism and a rotating mechanism are arranged in the elastic plug. The auxiliary mechanism is connected with the rotating mechanism, and a shaking mechanism is arranged on the side wall, facing the male hook plate, of the auxiliary hook plate. According to the sternum fixing device, the grasping force and the grasping position can be adjusted according to expansion and contraction of the sternum during breathing of a patient, the situation that the stability during sternum fixing is affected due to local non-fitting between the fixator and the sternum is reduced, and the stability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a sternum closure fixator for surgery and a use method thereof. Background Art

[0002] In many surgeries that require sternotomy, such as cardiac surgery, the purpose of sternotomy is to obtain sufficient operating space so that doctors can smoothly operate on organs and tissues in the chest such as the heart and large blood vessels, such as heart valve replacement, congenital heart disease correction, coronary artery bypass grafting, etc. However, after the operation is completed, how to safely and effectively close and fix the cut sternum to promote the healing of the sternum and restore the integrity and stability of the chest becomes a key issue;

[0003] Generally, when the sternum is closed and fixed, two rigid and relatively movable clamping plates are basically used to close and fix the sternum. Since the fixator is made of rigid material, when the patient's sternum is fixed, the patient's sternum will have certain ups and downs when the patient coughs or sneezes. Since the general rigid fixator on the sternum is difficult to adjust with the changes of the sternum, the long-term changes of the patient's sternum during long-term fixation may easily cause changes in the fixing force and fixing position of the fixator, affecting the stability of the sternum when fixed. Summary of the invention

[0004] The technical problem to be solved by the present invention is that when a patient coughs or sneezes, the sternum may change, and the existing rigid sternum fixator cannot be adjusted according to the change, thereby affecting the stability of the sternum fixation.

[0005] In order to solve the above technical problems, the technical solution of the present invention is to provide a sternum closure fixator for surgery, including a main body, a male hook plate is provided at the bottom of one end of the main body, and a fixing mechanism is provided on the main body, and the fixing mechanism includes an elastic plug and a female hook plate. The elastic plug is arranged inside the main body, and the female hook plate is connected to the end of the elastic plug away from the male hook plate and is opposite to the male hook plate. A sliding mechanism is provided on the fixing mechanism, and the sliding mechanism includes a sub-hook plate, and the sub-hook plate is arranged on the inner side wall of the female hook plate facing the male hook plate, and one end of the sub-hook plate is inserted into the elastic plug, and an auxiliary mechanism and a rotating mechanism are provided in the elastic plug, and the auxiliary mechanism is connected to the rotating mechanism, and the rotating mechanism is connected to the sub-hook plate and the female hook plate, and a shaking mechanism is provided on the side wall of the sub-hook plate facing the male hook plate.

[0006] Optionally, the fixing mechanism further comprises a slot, and the slot is arranged at one end of the elastic plug close to the male hook plate.

[0007] Optionally, a cylindrical groove and a rectangular groove are provided in the elastic plug, the cylindrical groove is close to the male hook plate, and the rectangular groove is close to the female hook plate, one end of the female hook plate and the sub-hook plate are inserted into the rectangular groove, and triangular long plates are provided on both side walls of one end of the female hook plate extending into the rectangular groove, the bottom surface of the triangular long plate is an inclined surface, and the bottom surface of the triangular long plate is inclined upward from the side close to the male hook plate to the side away from the male hook plate, a long groove is provided on the side wall where the triangular long plate is located, a short rod is provided in the long groove, and one end of the short rod is fixedly connected to the rectangular groove.

[0008] Optionally, one end of the sub-hook plate inserted into the elastic plug is fixedly connected to a limiting plate, a side wall of the limiting plate is provided with a penetrating sliding groove, a long rod is provided in the sliding groove, both ends of the long rod are fixedly connected to the side walls of the rectangular groove, and one end of the limiting plate away from the sub-hook plate is fixedly connected to two tension springs, and the tension springs are fixedly connected to the bottom inner wall of the rectangular groove.

[0009] Optionally, a long groove is provided on the side wall where the female hook plate contacts the sub-hook plate, and an arc-shaped elastic plate is provided in the long groove.

[0010] Optionally, one end of the limit plate away from the sub-hook plate is fixedly connected to the limit strip, and the rotating mechanism is arranged in the rectangular groove, including a sliding frame and a rotating plate, the end of the rotating plate close to the male hook plate is provided with a through hole, a rotating shaft is provided in the through hole, both ends of the rotating shaft are connected to the side walls of the rectangular groove, the lower end of the sliding frame is sleeved on the limit plate, and the limit plates on both sides of the sliding frame are provided with clamping rods, and the clamping rods clamp the sliding frame to the limit plate, sliding rods extend on both sides of the upper end of the sliding frame, a T-shaped slide groove is provided at the bottom of the rotating plate, the sliding frame is slidably connected to the T-shaped slide groove through the sliding rod, and the rotating plate is close to the female hook plate One end of the vehicle is provided with a through slot, and a connecting rod is provided in the through slot. Two ends of the connecting rod extend out of the through slot and are provided with triangular columns. The width of the through slot is greater than the width of the connecting rod. The connecting rod can slide in the through slot. A vertical limit plate 2 is provided on the inner sides of the two triangular columns. The two ends of the limit plate 2 are fixedly connected by rectangular slots. A vertical slide slot is provided on the limit plate 2. A short shaft is provided on the triangular column, and the short shaft is arranged in the slide slot. The short shaft can slide up and down along the slide slot. The upper surface of the triangular column is in contact with the lower surface of the triangular long plate. An auxiliary spring is fixedly connected above the rotating plate, and the top of the auxiliary spring is fixedly connected to the top inner wall of the rectangular slot.

[0011] Optionally, the auxiliary mechanism includes a return spring and a piston plate, the return spring is arranged in the cylindrical groove, a piston plate is provided on one end of the return spring facing the rectangular groove, the piston plate is sealedly connected to the cylindrical groove, a connecting rod is provided on the other side of the piston plate, the connecting rod passes through the side wall of the cylindrical groove and contacts the upper surface of the rotating plate.

[0012] Optionally, an air inlet cavity is opened inside both sides of the sub-hook plate, and a plurality of air inlet holes are provided on the side wall of the air inlet cavity. A centrally symmetrical connecting tube is provided on both sides of the piston plate. One end of the connecting tube is slidably connected to the piston plate and connected to the cylindrical groove, and the other end is fixedly connected to the side wall of the rectangular groove and extends into the air inlet cavity and connected to the air inlet cavity. Inflatable bags are provided on both sides of the sub-hook plate, and the inflatable bags are connected to the air inlet cavity and the connecting tube.

[0013] Optionally, the shaking mechanism includes an airbag, and an elongated groove 2 is provided in the middle of a side of the sub-hook plate away from the main hook plate, the airbag is arranged in the elongated groove 2, and a plurality of inflation holes are provided in the sub-hook plate, the airbag is connected with the inflation bag through the inflation holes, and a shaking plate is covered on the side of the airbag away from the main hook plate, and both ends of the shaking plate are connected to the inner wall of the elongated groove 2 through a flexible layer, and two elastic plates 1 are fixedly connected to the side of the airbag away from the main hook plate, and the two elastic plates 1 extend and are connected to the shaking plate in an eight-shaped shape, and two elastic plates 2 are symmetrically distributed with the middle of the shaking plate as the center on the side of the shaking plate facing the airbag, and one end of the elastic plate 2 away from the shaking plate is fixedly connected to the inner wall of the elongated groove 2.

[0014] A method for using a sternum closure fixator for surgery comprises the following steps:

[0015] S1. Installation and closure

[0016] When the sternum needs to be closed and fixed, the elastic plug is first placed on one end of the main body, and then the main body and the fixing mechanism are placed on both sides of the sternum respectively;

[0017] S2, move and close

[0018] Push the elastic plug inwardly of the main body, thereby driving the female hook plate to approach the male hook plate, so as to achieve the purpose of closing the sternum;

[0019] S3, Restriction and Fixation

[0020] After the sternum is closed, a clamping plate is placed in the clamping slot so that the elastic plug can be firmly fitted inside the main body, thereby achieving the purpose of fixing the sternum.

[0021] In summary, the present invention has at least one of the following beneficial effects:

[0022] 1. After the main body and the fixing mechanism of the present invention close and fix the sternum, the sub-hook plate will stretch the two tension springs on the side walls of the limit plate when closing the sternum. When the patient coughs or sneezes, causing the sternum to fluctuate greatly, the two tension springs on the sub-hook plate and the arc-shaped elastic plate on the main hook plate will drive the sub-hook plate to slide and fine-tune in the rectangular groove under the resetting elastic force, so that the sub-hook plate can adjust the gripping force and gripping position according to the expansion and contraction of the sternum when the patient breathes under the fluctuation of the sternum, thereby reducing the difficulty in adjusting the changes of the sternum when the sternum fluctuates due to excessive rigidity of the fixing device, and reducing the difficulty in adjusting the changes of the sternum due to the rigidity of the fixer when the sternum changes, resulting in local non-fit between the fixer and the sternum, affecting the stability of the sternum when fixed, and improving the stability efficiency.

[0023] 2. When the sub-hook plate of the present invention slides in the rectangular groove, the sliding of the sub-hook plate will drive the limit plate and the limit bar to push the sliding frame to slide in the direction of the male hook plate. When the limit bar pushes the sliding frame to slide in the rotating plate, when the sliding frame pushes the rotating plate to slide, the sliding of the rotating plate will push the rotating plate to rotate upward in the rectangular groove. When the rotating plate rotates upward, it will drive the two rotating plates to slide upward in the limit plate 2. When the triangular column slides upward, the inclined surface on the triangular column will squeeze the inclined surface at the bottom of the triangular long plate, and the inclined surface at the bottom of the triangular long plate will be affected. After being squeezed, it will slide forward in the rectangular groove. When the two triangular long plates slide, they will drive the female hook plate to slide synchronously. When the female hook plate slides, it will slide in the direction of the male hook plate and clamp the female hook plate when the female hook plate contracts as the sub-hook plate changes with the patient's breathing. This reduces the periodic changes between the sub-hook plate and the sternum as the sternum changes with the patient's breathing, which may cause positional displacement when the sub-hook plate is fixed on the sternum. This ensures the reliability of the sub-hook plate's sternum fixation effect as the sternum changes, reduces the possibility of displacement, and improves the reliability of the sternum fixation effect.

[0024] 3. When the rotating plate of the present invention rotates in the rectangular groove, the piston plate will be squeezed by the rotation of the rotating plate. After being squeezed, the piston plate will slide in the cylindrical groove. When the piston plate slides, it will squeeze the gas inside the cylindrical groove and allow the gas to enter the air inlet chamber through the connecting pipe and enter the interior of the inflatable bag through the air inlet chamber, so that the inflatable bag will bulge slightly under the entry of the gas. When the mother hook plate slides and squeezes the sub-hook plate, it will squeeze the raised inflatable bag on the sub-hook plate. When the raised inflatable bag is squeezed by the mother hook plate, a flexible buffer layer will be formed between the mother hook plate and the sub-hook plate, thereby reducing the squeezing of the sub-hook plate by the mother hook plate. The buffering of the inflatable bag after the bulge can reduce the collision of the mother hook plate with the sub-hook plate when it is sliding, causing discomfort to the patient when the sternum is fixed, thereby further improving the stability during fixation.

[0025] 4. After the inflatable bag of the present invention is bulged and squeezed by the mother hook plate, the gas inside the inflatable bag will enter the interior of the airbag through a number of air inlet holes under the squeezing of the mother hook plate and cause it to bulge. When the airbag is bulging, it will push the two elastic plates to slide upward. When the two elastic plates are pushed by the bulging of the airbag, the stretching of the elastic plate pair of the shaking plate can be reduced, so that the elastic plate one can rotate on the side wall of the shaking plate. At this time, after the sub-hook plate fixes the sternum and adjusts with the change of the sternum, the sternum can drive the shaking plate to shake inside the long groove two through the elastic plate two when it fluctuates. Then, the friction between the sternum and the sub-hook plate caused by the change of the sternum can be reduced through the shaking of the shaking plate, and the friction generated when the sternum and the sub-hook plate are in direct contact can be reduced, thereby reducing the damage to the surface tissue of the sternum caused by friction and the discomfort to the patient, thereby further improving the stability and service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the overall partial cross-sectional structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the main body of the present invention;

[0029] Figure 4 It is a schematic diagram of the fixing mechanism of the present invention;

[0030] Figure 5 It is a schematic diagram of the rotating mechanism of the present invention;

[0031] Figure 6 It is a schematic diagram of the partial cross-sectional structure of the sub-hook plate of the present invention;

[0032] Figure 7 For the present invention Figure 6 Enlarged view of point B in the middle;

[0033] Figure 8 It is a partial schematic diagram of the shaking mechanism of the present invention;

[0034] Fig. 9 For the present invention Figure 8 Enlarged view of point A in the middle;

[0035] Fig.10 The figure is a flow chart of the method for using the present invention.

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] In the figure: 1. main body; 101. fixing seat; 102. male hook plate; 2. fixing mechanism; 201. elastic plug; 202. card slot; 203. cylindrical slot; 204. rectangular slot; 205. female hook plate; 206. triangular long plate; 3. sliding mechanism; 301. sub-hook plate; 302. limit plate one; 303. limit strip; 304. air inlet cavity; 305. air inlet hole; 4. rotating mechanism; 401. sliding frame; 402. rotating plate; 403. triangular column; 404. limit plate two; 5. auxiliary mechanism; 501. piston plate; 502. connecting pipe; 503. inflatable bag; 6. shaking mechanism; 601. air bag; 602. elastic plate one; 603. shaking plate; 604. elastic plate two. DETAILED DESCRIPTION

[0038] The following combination Figure 1-10 The present invention is described in further detail.

[0039] Embodiment 1

[0040] The present invention discloses a sternum closure fixator for surgery, referring to Figures 1 to 3 , including a main body 1, a male hook plate 102 is provided at the bottom of one end of the main body 1, a fixing mechanism 2 is provided on the main body 1, the fixing mechanism 2 includes an elastic plug 201 and a female hook plate 205, the elastic plug 201 is arranged inside the main body 1, and can slide inside the main body 1, the female hook plate 205 is connected to the end of the elastic plug 201 away from the male hook plate 102, and is opposite to the male hook plate 102, the fixing mechanism 2 is provided with a sliding mechanism 3, the sliding mechanism 3 includes a sub-hook plate 301, and the sub-hook plate 301 is arranged on the female hook plate 205 is on the inner side wall facing the male hook plate 102, and one end of the sub-hook plate 301 is inserted into the elastic plug 201, an auxiliary mechanism 5 and a rotating mechanism 4 are provided in the elastic plug 201, the auxiliary mechanism 5 is connected to the rotating mechanism 4, the rotating mechanism 4 is connected to the sub-hook plate 301 and the female hook plate 205, a shaking mechanism 6 is provided on the side wall of the sub-hook plate 301 facing the male hook plate 102, the fixing mechanism 2 also includes a slot 202, and the slot 202 is provided at one end of the elastic plug 201 close to the male hook plate 102.

[0041] In a further embodiment, referring to Figure 4A cylindrical groove 203 and a rectangular groove 204 are provided in the elastic plug 201, the cylindrical groove 203 is close to the male hook plate 102, and the rectangular groove 204 is close to the female hook plate 205, one end of the female hook plate 205 and the sub-hook plate 301 are inserted into the rectangular groove 204, and triangular long plates 206 are provided on the two side walls of one end of the female hook plate 205 extending into the rectangular groove 204, the bottom surface of the triangular long plate 206 is an inclined surface, and the bottom surface of the triangular long plate 206 is inclined upward from the side close to the male hook plate 102 to the side away from the male hook plate 102, and a long groove is provided on the side wall where the triangular long plate 206 is located, and a short rod is provided in the long groove, one end of the short rod is fixedly connected to the rectangular groove 204, and the inclined surface at the bottom of the triangular long plate 206 will slide forward in the rectangular groove 204 after being squeezed, and when the two triangular long plates 206 slide, they will drive the female hook plate 205 to slide synchronously.

[0042] In a further embodiment, referring to Figure 5 , one end of the sub-hook plate 301 inserted into the elastic plug 201 is fixedly connected to the limit plate 302, a sliding groove is provided on the side wall of the limit plate 302, a long rod is provided in the sliding groove, both ends of the long rod are fixedly connected to the side walls of the rectangular groove 204, and one end of the limit plate 302 away from the sub-hook plate 301 is fixedly connected to two tension springs, and the tension springs are fixedly connected to the bottom inner wall of the rectangular groove 204, and a long groove 1 is provided on the side wall where the mother hook plate 205 contacts the sub-hook plate 301, and an arc-shaped elastic plate is provided in the long groove. When the patient coughs or sneezes, causing the sternum to rise and fall to a large extent, the two tension springs on the sub-hook plate 301 and the arc-shaped elastic plate on the mother hook plate 205 will drive the sub-hook plate 301 to slide fine-tuning in the rectangular groove 204 under the resetting elastic force;

[0043] The end of the limit plate 302 away from the sub-hook plate 302 is fixedly connected to the limit strip 303, and the rotating mechanism is arranged in the rectangular groove 204, including a sliding frame 401 and a rotating plate 402. The end of the rotating plate 402 close to the male hook plate 102 is provided with a through hole, and a rotating shaft is arranged in the through hole. The two ends of the rotating shaft are connected to the side walls of the rectangular groove 204. The lower end of the sliding frame 401 is sleeved on the limit plate 302, and the limit plates 302 on both sides of the sliding frame 401 are provided with clamping rods. The holding rod clamps the sliding frame 401 on the limit plate 302, and sliding rods extend from both sides of the upper end of the sliding frame 401. A T-shaped slide groove is provided at the bottom of the rotating plate 402. The sliding frame 401 is slidably connected in the T-shaped slide groove through the sliding rod. A through groove is provided at one end of the rotating plate 402 close to the female hook plate 205, and a connecting rod is provided in the through groove. Both ends of the connecting rod extend out of the through groove and are provided with triangular columns 403. The width of the through groove is greater than the width of the connecting rod. The connecting rod can slide in the through groove. The two triangular columns A vertical limit plate 204 is provided on the inner side of 403, and the two ends of the limit plate 204 are fixedly connected to the rectangular grooves 204. A vertical slide groove is provided on the limit plate 204. A short shaft is provided on the triangular column 403, and the short shaft is arranged in the slide groove. The short shaft can slide up and down along the slide groove. The upper surface of the triangular column 403 fits with the lower surface of the triangular long plate 206. An auxiliary spring is fixedly connected above the rotating plate 402, and the top of the auxiliary spring is fixedly connected to the top inner wall of the rectangular groove 204. The fixed connection is that when the sub-hook plate 301 slides in the rectangular groove 204, the sliding of the sub-hook plate 301 will drive the limit plate 302 and the limit bar 303 to push the sliding frame 401 to slide in the direction of the male hook plate 102, and the limit bar 303 pushes the sliding frame 401 to slide in the rotating plate 402, so that the rotating plate 402 rotates. When the rotating plate 402 rotates upward, it will drive the two triangular columns 403 to slide upward in the limit plate 2 404.

[0044] In a further embodiment, referring to Figure 6 and Figure 7 The auxiliary mechanism includes a return spring and a piston plate 501. The return spring is arranged in the cylindrical groove 203. The piston plate 501 is arranged on one end of the return spring 203 facing the rectangular groove 204. The piston plate 501 is sealed and connected to the cylindrical groove 203. A connecting rod is arranged on the other side of the piston plate 501. The connecting rod passes through the side wall of the cylindrical groove 203 and contacts the upper surface of the rotating plate 402.

[0045] Air inlet cavities 304 are provided inside the two sides of the sub-hook plate 301, and a plurality of air inlet holes 305 are provided on the side walls of the air inlet cavity 304. Centrally symmetrical connecting tubes 502 are provided on the two sides of the piston plate 501. One end of the connecting tube 502 is slidably connected to the piston plate 501 and is connected to the cylindrical groove 203, and the other end is fixedly connected to the side wall of the rectangular groove 204 and extends into the air inlet cavity 304 and is connected to the air inlet cavity 304. Inflatable bags 503 are provided on both sides of the sub-hook plate 301. The inflatable bags 503 are connected to the air inlet cavity 304 and the connecting tube 502. When the rotating plate 402 rotates in the rectangular groove 204, the piston plate 501 is squeezed by the rotation of the rotating plate 402. After being squeezed, the plate 501 will slide in the cylindrical groove 203. When the piston plate 501 slides, it will squeeze the gas inside the cylindrical groove 203 and allow the gas to enter the air inlet chamber 304 through the connecting tube 502 and enter the interior of the inflation bag 503 through the air inlet chamber 304, so that the inflation bag 503 will bulge slightly under the entry of gas. The connecting tube 502 is made of flexible material, which can reduce the squeezing of the sub-hook plate 301 by the female hook plate 205. The cushioning of the inflation bag 503 after the bulge can reduce the collision of the female hook plate 205 with the sub-hook plate 301 when it is sliding, causing discomfort to the patient when the sternum is fixed.

[0046] In a further embodiment, referring to Figure 8 and Fig. 9 The shaking mechanism 6 includes an airbag 601, a long groove 2 is provided in the middle of the side of the sub-hook plate 301 away from the mother hook plate 205, the airbag 601 is arranged in the long groove 2, a plurality of inflation holes are provided in the sub-hook plate 301, the airbag 601 is connected with the inflation bag 503 through the inflation holes, and the side of the airbag 601 away from the mother hook plate 205 is covered with a shaking plate 603, and both ends of the shaking plate 603 are connected to the inner wall of the long groove 2 through a flexible layer, and two elastic plates 1 602 are fixedly connected to the side of the airbag 601 away from the mother hook plate 205, and the two elastic plates 1 602 extend to the shaking plate 603 in an eight-shaped shape and are connected The side of the shaking plate 603 facing the airbag 601 is provided with two elastic plates 604 symmetrically distributed with the middle part of the shaking plate 603 as the center, and the end of the elastic plate 604 away from the shaking plate 603 is fixedly connected to the inner wall of the long groove 2, and when the airbag 601 is bulged, it will push the two elastic plates 602 to slide apart on both sides, and when the two elastic plates 602 are pushed by the bulge of the airbag 601, the stretching of the shaking plate 603 by the elastic plate 602 can be reduced, and then the friction between the sternum and the sub-hook plate 301 caused by the change of the sternum can be reduced through the shaking of the shaking plate 603.

[0047] A method for using a sternum closure fixator for surgery, referring to Fig.10 , including the following steps:

[0048] S1. Installation and closure

[0049] When the sternum needs to be closed and fixed, firstly, the elastic plug 201 is placed on one end of the main body 1, and then the main body 1 and the fixing mechanism 2 are placed on both sides of the sternum respectively;

[0050] S2, move and close

[0051] Push the elastic plug 201 into the main body 1, thereby driving the female hook plate 205 to move closer to the male hook plate 102, so as to close the sternum;

[0052] S3, Restriction and Fixation

[0053] After the sternum is closed, a clamping plate is placed in the clamping slot 202 so that the elastic plug 201 can be firmly attached to the inside of the main body 1, thereby achieving the purpose of fixing the sternum.

[0054] Specifically, during use, when the sternum needs to be closed and fixed, the elastic plug 201 is first placed inside the main body 1, and then the main body 1 and the fixing mechanism 2 are placed on both sides of the sternum. Then, the elastic plug 201 is slid to drive the female hook plate 205 to slide inside the main body 1 to achieve the purpose of closing the sternum. After the sternum is closed, a card plate is placed in the card slot 202 so that the elastic plug 201 can be firmly stuck inside the main body 1 to achieve the purpose of fixing the sternum.

[0055] When the main body 1 and the fixing mechanism 2 are closed and fixed to the sternum, the sub-hook plate 301 will stretch the two tension springs on the side walls of the limit plate 302 when closing the sternum. When the patient coughs or sneezes, causing the sternum to rise and fall to a large extent, the two tension springs on the sub-hook plate 301 and the arc-shaped elastic plate on the mother hook plate 205 will drive the sub-hook plate 301 to slide fine-tune in the rectangular groove 204 under the resetting elastic force, so that the sub-hook plate 301 can adjust the gripping force and gripping position according to the expansion and contraction of the sternum during the patient's breathing under the fluctuation of the sternum, reduce the rigidity of the fixing device being too large, which makes it difficult to adjust the changes of the sternum when the sternum fluctuates, and reduce the situation where the rigidity of the fixator makes it difficult to adjust the changes of the sternum when the sternum changes, resulting in local non-fit between the fixator and the sternum, affecting the stability of the sternum when fixed, and improving the stability efficiency.

[0056] When the sub-hook plate 301 slides in the rectangular groove 204, the sliding of the sub-hook plate 301 will drive the limit plate 302 and the limit bar 303 to push the sliding frame 401 to slide in the direction of the male hook plate 102, and the limit bar 303 will push the sliding frame 401 to slide in the rotating plate 402. The sliding of the sliding frame 401 will push the rotating plate 402 to rotate upward in the rectangular groove 204. When the rotating plate 402 rotates upward, it will drive the two triangular columns 403 to slide upward in the limit plate 204, so that the inclined surface on the triangular column 403 is squeezed against the inclined surface at the bottom of the triangular long plate 206, and the inclined surface at the bottom of the triangular long plate 206 is squeezed. After that, it will slide forward in the rectangular groove 204, and the two triangular long plates 206 will drive the female hook plate 205 to slide synchronously when sliding, so that the female hook plate 205 can slide in the direction of the male hook plate 102 while the sub-hook plate 301 contracts with the changes of the sternum, and clamp the sub-hook plate 301, so as to reduce the situation that the sub-hook plate 301 is fixed on the sternum due to the periodic changes between the sub-hook plate 301 and the sternum when the sternum changes with the patient's breathing, thereby ensuring the reliability of the sternum fixation effect of the sub-hook plate 301 when the sternum changes, reducing the possibility of displacement, and improving the reliability of the sternum fixation effect.

[0057] When the rotating plate 402 rotates in the rectangular groove 204, the piston plate 501 is squeezed by the rotation of the rotating plate 402. After being squeezed, the piston plate 501 slides in the cylindrical groove 203. When the piston plate 501 slides, it squeezes the gas inside the cylindrical groove 203 and allows the gas to enter the air inlet chamber 304 through the connecting pipe 502 and enter the interior of the inflatable bag 503 through the air inlet chamber 304, so that the inflatable bag 503 is slightly bulged under the entry of gas. The female hook plate 205 slides and presses the sub-hook plate 303. 01 will squeeze the raised inflatable bag 503 on the sub-hook plate 301, and when the raised inflatable bag 503 is squeezed by the mother hook plate 205, a flexible buffer layer will be formed between the mother hook plate 205 and the sub-hook plate 301, thereby reducing the discomfort to the patient caused by the collision between the mother hook plate 205 and the sub-hook plate 301 when the mother hook plate 205 squeezes the sub-hook plate 301 through the buffering of the raised inflatable bag 503, thereby further improving the stability during fixation.

[0058] When the bulged inflatable bag 503 is squeezed by the female hook plate 205, the gas inside the inflatable bag 503 enters the interior of the airbag 601 under the squeezing of the female hook plate 205 and causes it to bulge. When the airbag 601 bulges, it pushes the two elastic plates 1 602 to open. When the two elastic plates 1 602 are pushed by the bulging of the airbag 601, the stretching of the elastic plate 1 602 on the shaking plate 603 can be reduced, so that the elastic plate 1 602 can rotate on the side wall of the shaking plate 603. At this time, When the sternum fluctuates, it can drive the shaking plate 603 to shake inside the long groove 2 through the elastic plate 2 604, and then the shaking of the shaking plate 603 can reduce the friction between the sternum and the sub-hook plate 301 caused by the change of the sternum, and can reduce the friction force generated when the sternum and the sub-hook plate 301 are in direct contact, reduce the damage to the sternum surface tissue caused by friction and the discomfort caused to the patient, and then can further improve the stability and service life of the device.

[0059] Embodiment 2

[0060] In this embodiment, a fixing seat 101 is provided at the upper end of the main body 1 at the end where the male hook plate 102 is located. The fixing seat 101 is used to place the installation tool. When the sternum needs to be closed and fixed, the elastic plug 201 is first placed inside the main body 1, and then the installation tool is inserted into the fixing seat 101 and the elastic plug 201, and then the main body 1 and the fixing mechanism 2 are placed on both sides of the sternum. Then, the elastic plug 201 is driven by the installation tool to slide the female hook plate 205 inside the main body 1 to achieve the purpose of closing the sternum. The installation tool can be a caliper, a telescopic rod, or other tool that can shorten the distance.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A sternum closure fixator for surgery, characterized in that: The invention comprises a main body (1), wherein a male hook plate (102) is provided at the bottom of one end of the main body (1), and a fixing mechanism (2) is provided on the main body (1), wherein the fixing mechanism (2) comprises an elastic plug (201) and a female hook plate (205), wherein the elastic plug (201) is arranged inside the main body (1), and the female hook plate (205) is connected to an end of the elastic plug (201) away from the male hook plate (102) and is opposite to the male hook plate (102), and wherein a sliding mechanism (3) is provided on the fixing mechanism (2), wherein the sliding mechanism (3) comprises a sub-hook The sub-hook plate (301) is arranged on the inner side wall of the female hook plate (205) facing the male hook plate (102), and one end of the sub-hook plate (301) is inserted into the elastic plug (201), and an auxiliary mechanism (5) and a rotating mechanism (4) are arranged in the elastic plug (201), the auxiliary mechanism (5) is connected to the rotating mechanism (4), and the rotating mechanism (4) is connected to the sub-hook plate (301) and the female hook plate (205), and a shaking mechanism (6) is arranged on the side wall of the sub-hook plate (301) facing the male hook plate (102).

2. The sternum closure fixator for surgery according to claim 1, characterized in that: The fixing mechanism (2) further comprises a slot (202), wherein the slot (202) is arranged at one end of the elastic plug (201) close to the male hook plate (102).

3. The sternum closure fixator for surgery according to claim 1, characterized in that: The elastic plug (201) is provided with a cylindrical groove (203) and a rectangular groove (204), wherein the cylindrical groove (203) is close to the male hook plate (102), and the rectangular groove (204) is close to the female hook plate (205). One end of the female hook plate (205) and the sub-hook plate (301) are inserted into the rectangular groove (204), and triangular long plates (206) are provided on both side walls of one end of the female hook plate (205) extending into the rectangular groove (204). The bottom surface of the triangular long plate (206) is an inclined surface, and the bottom surface of the triangular long plate (206) is inclined upward from a side close to the male hook plate (102) to a side away from the male hook plate (102). A long groove is provided on the side wall where the triangular long plate (206) is located, and a short rod is provided in the long groove, and one end of the short rod is fixedly connected to the rectangular groove (204).

4. The sternum closure fixator for surgery according to claim 3, characterized in that: One end of the sub-hook plate (301) inserted into the elastic plug (201) is fixedly connected to the limit plate (302); a sliding groove is provided on the side wall of the limit plate (302) and a long rod is provided in the sliding groove; both ends of the long rod are fixedly connected to the side walls of the rectangular groove (204); one end of the limit plate (302) away from the sub-hook plate (301) is fixedly connected to two tension springs; and the tension springs are fixedly connected to the bottom inner wall of the rectangular groove (204).

5. The sternum closure fixator for surgery according to claim 4, characterized in that: A long groove is provided on the side wall of the female hook plate (205) in contact with the sub-hook plate (301), and an arc-shaped elastic plate is provided in the long groove.

6. The sternum closure fixator for surgery according to claim 4, characterized in that: The end of the limit plate (302) away from the sub-hook plate (302) is fixedly connected to the limit strip (303). The rotating mechanism is arranged in the rectangular groove (204) and comprises a sliding frame (401) and a rotating plate (402). The end of the rotating plate (402) close to the male hook plate (102) is provided with a through hole, and a rotating shaft is arranged in the through hole. The two ends of the rotating shaft are connected to the side walls of the rectangular groove (204). The lower end of the sliding frame (401) is sleeved on the limit plate (302), and the limit plates (302) on both sides of the sliding frame (401) are provided with clamping rods, and the clamping rods clamp the sliding frame (401) and fix it on the limit plate (302). Sliding rods extend from both sides of the upper end of the sliding frame (401). A T-shaped sliding groove is arranged at the bottom of the rotating plate (402). The sliding frame (401) is slidably connected in the T-shaped sliding groove through the sliding rod. , a through slot is provided at one end of the rotating plate (402) close to the female hook plate (205), a connecting rod is provided in the through slot, both ends of the connecting rod extend out of the through slot and are provided with a triangular column (403), the width of the through slot is greater than the width of the connecting rod, and the connecting rod can slide in the through slot, a vertical limiting plate 2 (404) is provided on the inner side of the two triangular columns (403), and the two ends of the limiting plate 2 (404) are fixedly connected by the rectangular slots (204), a vertical sliding slot is provided on the limiting plate 2 (404), a short shaft is provided on the triangular column (403), and the short shaft is arranged in the sliding slot, and the short shaft can slide up and down along the sliding slot, the upper surface of the triangular column (403) is in contact with the lower surface of the triangular long plate (206), and an auxiliary spring is fixedly connected above the rotating plate (402), and the top of the auxiliary spring is fixedly connected to the top inner wall of the rectangular slot (204).

7. The sternum closure fixator for surgery according to claim 6, characterized in that: The auxiliary mechanism comprises a return spring and a piston plate (501), wherein the return spring is arranged in the cylindrical groove (203), a piston plate (501) is arranged on one end of the return spring (203) facing the rectangular groove (204), the piston plate (501) is sealedly connected to the cylindrical groove (203), and a connecting rod is arranged on the other side of the piston plate (501), and the connecting rod passes through the side wall of the cylindrical groove (203) and contacts the upper surface of the rotating plate (402).

8. The sternum closure fixator for surgery according to claim 7, characterized in that: Air inlet cavities (304) are provided inside the two sides of the sub-hook plate (301), and a plurality of air inlet holes (305) are provided on the side walls of the air inlet cavity (304). Centrally symmetrical connecting pipes (502) are provided on the two sides of the piston plate (501), and one end of the connecting pipe (502) is slidably connected to the piston plate (501) and is connected to the cylindrical groove (203), and the other end is fixedly connected to the side wall of the rectangular groove (204) and extends into the air inlet cavity (304) to be connected to the air inlet cavity (304). Inflatable bags (503) are provided on the two sides of the sub-hook plate (301), and the inflatable bags (503) are connected to the air inlet cavity (304) and the connecting pipe (502).

9. The sternum closure fixator for surgery according to claim 8, characterized in that: The shaking mechanism (6) comprises an airbag (601), a second long groove is provided in the middle of a side of the sub-hook plate (301) away from the main hook plate (205), the airbag (601) is arranged in the second long groove, a plurality of inflation holes are provided in the sub-hook plate (301), the airbag (601) is connected to the inflation bag (503) through the inflation holes, the side of the airbag (601) away from the main hook plate (205) is covered with a shaking plate (603), and both ends of the shaking plate (603) are connected to the long groove through a flexible layer. The two inner walls are connected, and two elastic plates (602) are fixedly connected on the side of the airbag (601) away from the female hook plate (205), and the two elastic plates (602) extend and are connected to the shaking plate (603) in an eight-shaped shape, and the shaking plate (603) is provided with two elastic plates (604) symmetrically distributed with the middle of the shaking plate (603) as the center on the side facing the airbag (601), and one end of the elastic plate (604) away from the shaking plate (603) is fixedly connected to the inner wall of the elongated groove (2).

10. A method for using a sternum closure fixator for surgery, characterized in that: The following steps are involved: S1. Installation and closure When the sternum needs to be closed and fixed, the elastic plug (201) is first placed on one end of the main body (1), and then the main body (1) and the fixing mechanism (2) are respectively placed on both sides of the sternum; S2, move and close Pushing the elastic plug (201) into the main body (1) drives the female hook plate (205) to move closer to the male hook plate (102) to achieve the purpose of closing the sternum; S3, Restriction and Fixation After the sternum is closed, a clamping plate is placed in the clamping slot (202), so that the elastic plug (201) can be firmly fitted inside the main body (1), thereby achieving the purpose of fixing the sternum.

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