A surgical sternal closure fixator and its usage method

Abstract

This invention relates to the field of medical device technology and discloses a surgical sternal closure fixator, comprising a main body, a male hook plate at one end of the main body, and a fixing mechanism on the main body. The fixing mechanism includes a flexible plug and a female hook plate. The flexible plug is located inside the main body, and the female hook plate is connected to the end of the flexible plug away from the male hook plate. The fixing mechanism includes a sliding mechanism, which includes a female hook plate located on the inner wall of the female hook plate facing the male hook plate, with one end of the female hook plate inserted into the flexible plug. The flexible plug contains an auxiliary mechanism and a rotating mechanism, the auxiliary mechanism being connected to the rotating mechanism. A wobbling mechanism is provided on the side wall of the female hook plate facing the male hook plate. This invention can adjust the gripping force and gripping position according to the expansion and contraction of the sternum during the patient's breathing, reducing local misfitting between the fixator and the sternum, which affects the stability of sternal fixation and improving stability.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a surgical sternal closure fixation device and its usage method. Background Technology

[0002] In many surgeries, such as cardiac surgery, which require opening the sternum, the sternum is opened to obtain sufficient surgical space so that surgeons can easily operate on organs and tissues within the thoracic cavity, such as the heart and major blood vessels. Examples include heart valve replacement, correction of congenital heart disease, and coronary artery bypass grafting. However, after the surgery, a crucial issue arises: how to safely and effectively close and fix the opened sternum to promote healing and restore the integrity and stability of the thoracic cavity.

[0003] Generally, when the sternum is closed and fixed, it is usually closed and fixed by two rigid clamps that can move relative to each other. Since the fixator is made of rigid material, when the patient coughs or sneezes, the sternum will move and change. Because it is difficult for a typical rigid fixator to adjust to the changes in the sternum, the long-term changes in the patient's sternum can easily cause changes in the fixation force and fixation position of the fixator, affecting the stability of the sternum fixation. 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 existing rigid sternal fixation devices cannot adjust to the changes, thus affecting the stability of sternal fixation.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is to provide a surgical sternal closure fixator, comprising a main body, a male hook plate at one bottom end of the main body, a fixing mechanism on the main body, the fixing mechanism including an elastic plug and a female hook plate, the elastic plug being disposed inside the main body, the female hook plate being connected to the end of the elastic plug away from the male hook plate and opposite to the male hook plate, the fixing mechanism being provided with a sliding mechanism, the sliding mechanism including a female hook plate, the female hook plate being disposed on the inner side wall of the female hook plate facing the male hook plate, and one end of the female hook plate being inserted into the elastic plug, the elastic plug being provided with an auxiliary mechanism and a rotating mechanism, the auxiliary mechanism being connected to the rotating mechanism, the rotating mechanism being connected to the female hook plate and the female hook plate, and a wobbling mechanism being provided on the side wall of the female hook plate facing the male hook plate.

[0006] Optionally, the fixing mechanism further includes a slot located at one end of the resilient plug near the male hook plate.

[0007] Optionally, the elastic plug has a cylindrical groove and a rectangular groove. 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 male hook plate is inserted into the rectangular groove. Triangular plates are provided on the two side walls of the end of the female hook plate that extends into the rectangular groove. The bottom surface of the triangular plates is inclined and slopes upward from the side closer 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 plates are 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, a limiting plate is fixedly connected to one end of the sub-hook plate inserted into the elastic plug. A through sliding groove is provided on the side wall of the limiting plate, and a long rod is provided in the sliding groove. The two ends of the long rod are fixedly connected to the side wall of the rectangular groove. Two tension springs are fixedly connected to the end of the limiting plate away from the sub-hook plate. The tension springs are fixedly connected to the bottom inner wall of the rectangular groove.

[0009] Optionally, the side wall where the female hook plate contacts the male hook plate is provided with an elongated groove, and an arc-shaped elastic plate is provided in the elongated groove.

[0010] Optionally, a limiting strip is fixedly connected to the end of the limiting plate away from the male hook plate. The rotating mechanism is located in a rectangular groove and includes a sliding frame and a rotating plate. The end of the rotating plate near the male hook plate has a through hole, and a rotating shaft is located in the through hole. Both ends of the rotating shaft are connected to the sidewalls of the rectangular groove. The lower end of the sliding frame is sleeved on the limiting plate, and clamping rods are provided on the limiting plates on both sides of the sliding frame. The clamping rods clamp and fix the sliding frame to the limiting plate. Sliding rods extend from both sides of the upper end of the sliding frame. A T-shaped sliding groove is provided at the bottom of the rotating plate, and the sliding frame is slidably connected to the T-shaped sliding groove through the sliding rods. The rotating plate is located near the female hook plate. One end of the rotating plate is provided with a through groove, and a connecting rod is provided in the through groove. The two ends of the connecting rod extend out of the through groove and are provided with triangular prisms. 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 inner sides of the two triangular prisms are provided with vertical limiting plates. The two ends of the limiting plates are fixedly connected with rectangular grooves. The limiting plates are provided with vertical sliding grooves. The triangular prisms are provided with short shafts. The short shafts are located in the sliding grooves and can slide up and down along the sliding grooves. The upper surface of the triangular prisms is in contact with the lower surface of the triangular long plate. An auxiliary spring is fixedly connected above the rotating plate. The top of the auxiliary spring is fixedly connected to the top inner wall of the rectangular groove.

[0011] Optionally, the auxiliary mechanism includes a return spring and a piston plate. The return spring is disposed in a cylindrical groove, and a piston plate is provided on one end of the return spring facing the rectangular groove. The piston plate is sealed to the cylindrical groove, and 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, the sub-hook plate has air inlet chambers on both sides, and multiple air inlet holes are provided on the side walls of the air inlet chambers. The piston plate has centrally symmetrical connecting pipes on both sides. One end of the connecting pipe is slidably connected to the piston plate and communicates with the cylindrical groove, and the other end is fixedly connected to the side wall of the rectangular groove and extends into the air inlet chamber and communicates with the air inlet chamber. The sub-hook plate has inflatable bags on both sides, and the inflatable bags are connected to the air inlet chamber and the connecting pipes.

[0013] Optionally, the shaking mechanism includes an airbag. A long groove II is provided in the middle of the side of the sub-hook plate away from the mother hook plate. The airbag is disposed in the long groove II. Multiple inflation holes are provided inside the sub-hook plate. The airbag communicates with an inflation bag through the inflation holes. A shaking plate covers the side of the airbag away from the mother hook plate. Both ends of the shaking plate are connected to the inner wall of the long groove II through flexible layers. Two elastic plates I are fixedly connected to the side of the airbag away from the mother hook plate. The two elastic plates I extend towards the shaking plate in a figure-eight shape and are connected. Two elastic plates II are symmetrically distributed around the middle of the shaking plate on the side of the shaking plate facing the airbag. The end of each elastic plate II away from the shaking plate is fixedly connected to the inner wall of the long groove II.

[0014] A method of using a surgical sternal closure fixation device includes the following steps:

[0015] S1. Installation and Closure

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

[0017] S2, Move and Close

[0018] Push the flexible plug into the body, thereby moving the female hook plate closer to the male hook plate, so as to close the sternum.

[0019] S3, Restriction and Fixation

[0020] After the sternum is closed, a retaining plate is placed in the slot so that the elastic plug can be firmly attached to the inside of 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 fixing mechanism of this invention fix the sternum, the sub-hook plate will stretch the two tension springs on the side wall of the limiting plate when the sternum is closed. When the patient coughs or sneezes, causing the sternum to fluctuate significantly, the two tension springs on the sub-hook plate and the arc-shaped elastic plate on the mother hook plate will drive the sub-hook plate to slide and finely adjust within the rectangular groove under the elastic force of the reset. This allows the sub-hook plate to adjust the gripping force and gripping position according to the expansion and contraction of the sternum during the patient's breathing, reducing the difficulty in adjusting the sternum when the rigidity of the fixing device is too large, thus reducing the situation where the rigidity of the fixing device makes it difficult to adjust the sternum when it fluctuates, resulting in local non-fitting between the fixing device and the sternum, affecting the stability of the sternum fixation, and improving the stability efficiency.

[0023] 2. When the sub-hook plate of the present invention slides within the rectangular groove, the sliding of the sub-hook plate will cause the limiting plate and the limiting strip to push the sliding frame towards the male hook plate. When the limiting strip pushes the sliding frame to slide within the rotating plate, and when the sliding frame pushes the rotating plate to slide, the sliding of the rotating plate will push the rotating plate to rotate upward within the rectangular groove. When the rotating plate rotates upward, it will cause the two rotating plates to slide upward within the second limiting plate. When the triangular prism slides upward, it will press against the inclined surface at the bottom of the triangular plate through the inclined surface on the triangular prism. The inclined surface at the bottom of the triangular plate is subjected to... After compression, it slides forward within the rectangular groove. As the two triangular plates slide, they drive the mother hook plate to slide synchronously. When the mother hook plate slides, it slides towards the male hook plate as the daughter hook plate contracts with the changes in the sternum, clamping the daughter hook plate. This reduces the possibility of the daughter hook plate shifting position on the sternum due to the periodic changes in the sternum as the patient breathes. It ensures the reliability of the sternal fixation effect of the daughter hook plate as it changes with the sternum, reduces the possibility of displacement, and improves the reliability of the sternal fixation effect.

[0024] 3. When the rotating plate of the present invention rotates within the rectangular groove, it compresses the piston plate. After being compressed, the piston plate slides within the cylindrical groove. As the piston plate slides, it compresses the gas inside the cylindrical groove, causing the gas to enter the air intake chamber through the connecting pipe and then into the interior of the inflation bag. This causes the inflation bag to bulge slightly due to the influx of gas. When the mother hook plate slides and compresses the daughter hook plate, it compresses the bulging inflation bag on the daughter hook plate. When the bulging inflation bag is compressed by the mother hook plate, a flexible buffer layer is formed between the mother hook plate and the daughter hook plate. This reduces the impact of the bulging inflation bag on the daughter hook plate when the mother hook plate is compressing it, thus reducing discomfort to the patient during sternal fixation. This further improves the stability of the fixation.

[0025] 4. After the inflated airbag of the present invention is squeezed by the mother hook plate, the gas inside the airbag will enter the airbag through several air inlets under the pressure of the mother hook plate, causing it to inflate. When the airbag inflates, it will push the two elastic plates to slide upward. When the two elastic plates are pushed by the inflated airbag, it can reduce the stretching of the pair of elastic plates on the rocking plate, so that the elastic plates can rotate on the side wall of the rocking plate. At this time, when the sub-hook plate is fixed to the sternum and adjusted with the changes of the sternum, the sternum can drive the rocking plate to rock through the elastic plate in the elongated groove. In this way, the rocking of the rocking plate can reduce the friction between the sternum and the sub-hook plate when the sternum changes. This can reduce the friction generated when the sternum and the sub-hook plate are in direct contact, reduce the damage to the surface tissue of the sternum caused by friction and the discomfort caused to the patient, and further improve the stability and service life of the device. Attached Figure Description

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

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

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

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

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

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

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

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

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

[0035] Figure 10 This is a flowchart of the method of using the present invention.

[0036] The attached diagram lists the components represented by each number as follows:

[0037] In the diagram: 1. Main body; 101. Fixing base; 102. Male hook plate; 2. Fixing mechanism; 201. Flexible plug; 202. Slot; 203. Cylindrical slot; 204. Rectangular slot; 205. Female hook plate; 206. Triangular plate; 3. Sliding mechanism; 301. Female hook plate; 302. Limiting plate one; 303. Limiting strip; 304. Air inlet chamber; 305. Air inlet hole; 4. Rotating mechanism; 401. Sliding frame; 402. Rotating plate; 403. Triangular prism; 404. Limiting plate two; 5. Auxiliary mechanism; 501. Piston plate; 502. Connecting pipe; 503. Inflatable bag; 6. Shaking mechanism; 601. Airbag; 602. Flexible plate one; 603. Shaking plate; 604. Flexible plate two. Detailed Implementation

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

[0039] Example 1

[0040] This invention discloses a surgical sternal closure fixator, with reference to... Figures 1 to 3 The system includes a main body 1, with a male hook plate 102 at one bottom end. A fixing mechanism 2 is mounted on the main body 1, comprising a resilient plug 201 and a female hook plate 205. The resilient plug 201 is located inside the main body 1 and can slide within it. The female hook plate 205 is connected to the end of the resilient plug 201 away from the male hook plate 102 and is opposite to the male hook plate 102. A sliding mechanism 3 is mounted on the fixing mechanism 2, comprising a female hook plate 301 positioned on top of the female hook plate. The inner wall of the male hook plate 102 is facing the female hook plate 205, and one end of the female hook plate 301 is inserted into the elastic plug 201. The elastic plug 201 is provided with an auxiliary mechanism 5 and a rotating mechanism 4. The auxiliary mechanism 5 is connected to the rotating mechanism 4. The rotating mechanism 4 is connected to the female hook plate 301 and the female hook plate 205. The side wall of the female hook plate 301 facing the male hook plate 102 is provided with a shaking mechanism 6. The fixing mechanism 2 also includes a slot 202, which is located at the end of the elastic plug 201 near the male hook plate 102.

[0041] In a further implementation, refer to Figure 4The flexible plug 201 has a cylindrical groove 203 and a rectangular groove 204. 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 male hook plate 301 is inserted into the rectangular groove 204. Triangular plates 206 are provided on the two side walls of the end of the female hook plate 205 that extends into the rectangular groove 204. The bottom surface of the triangular plate 206 is inclined, and the bottom surface of the triangular 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. A long groove is provided on the side wall where the triangular plate 206 is located. A short rod is provided in the long groove. One end of the short rod is fixedly connected to the rectangular groove 204. When the inclined surface of the bottom of the triangular plate 206 is squeezed, it will slide forward in the rectangular groove 204. When the two triangular plates 206 slide, they will drive the female hook plate 205 to slide synchronously.

[0042] In a further implementation, refer to Figure 5 The end of the sub-hook plate 301 inserted into the elastic plug 201 is fixedly connected to the limiting plate 302. The side wall of the limiting plate 302 has a through sliding groove. A long rod is provided in the sliding groove. The two ends of the long rod are fixedly connected to the side wall of the rectangular groove 204. Two tension springs are fixedly connected to the end of the limiting plate 302 away from the sub-hook plate 301. The tension springs are fixedly connected to the bottom inner wall of the rectangular groove 204. The side wall of the female hook plate 205 that contacts the sub-hook plate 301 has an elongated groove. An arc-shaped elastic plate is provided in the elongated groove. When the patient coughs or sneezes, causing the sternum to rise and fall significantly, the two tension springs on the sub-hook plate 301 and the arc-shaped elastic plate on the female hook plate 205 will drive the sub-hook plate 301 to slide and finely adjust within the rectangular groove 204 under the elastic force of the reset.

[0043] A limiting strip 303 is fixedly connected to the end of the limiting plate 302 away from the male hook plate 302. The rotating mechanism is located in the rectangular groove 204 and includes a sliding frame 401 and a rotating plate 402. The end of the rotating plate 402 near the male hook plate 102 has a through hole, and a rotating shaft is provided 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 limiting plate 302, and clamping rods are provided on the limiting plates 302 on both sides of the sliding frame 401. The sliding frame 401 is clamped and fixed to the limiting plate 302 by the holding rod. Sliding rods extend from both sides of the upper end of the sliding frame 401. A T-shaped groove is provided at the bottom of the rotating plate 402. The sliding frame 401 is slidably connected to the T-shaped groove via the sliding rods. A through groove is provided at one end of the rotating plate 402 near the female hook plate 205. 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 prisms 403. The width of the through groove is greater than the width of the connecting rod, allowing the connecting rod to slide within the through groove. The two triangular prisms... A vertical limiting plate 404 is provided on the inner side of 403. Rectangular grooves 204 are fixedly connected at both ends of the limiting plate 404. A vertical sliding groove is provided on the limiting plate 404. A short shaft is provided on the triangular prism 403. The short shaft is located in the sliding groove and can slide up and down along the sliding groove. The upper surface of the triangular prism 403 is in contact with the lower surface of the triangular long plate 206. An auxiliary spring is fixedly connected above the rotating plate 402. The top of the auxiliary spring is fixedly connected to the inner wall of the top of the rectangular groove 204. When the sub-hook plate 301 slides within the rectangular groove 204, the sliding of the sub-hook plate 301 will cause the limiting plate 302 and the limiting strip 303 to push the sliding frame 401 towards the male hook plate 102. The limiting strip 303 pushes the sliding frame 401 to slide within the rotating plate 402, thereby causing the rotating plate 402 to rotate. When the rotating plate 402 rotates upward, it will cause the two triangular prisms 403 to slide upward within the limiting plate 404.

[0044] In a further implementation, refer to Figure 6 and Figure 7 The auxiliary mechanism includes a reset spring and a piston plate 501. The reset spring is located in the cylindrical groove 203. The piston plate 501 is located on one end of the reset spring 203 facing the rectangular groove 204. The piston plate 501 is sealed to the cylindrical groove 203. A connecting rod is located 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] The hook plate 301 has air inlet chambers 304 on both sides, and multiple air inlet holes 305 on the side walls of the air inlet chambers 304. The piston plate 501 has centrally symmetrical connecting pipes 502 on both sides. One end of the connecting pipe 502 is slidably connected to the piston plate 501 and communicates with the cylindrical groove 203, while the other end is fixedly connected to the side wall of the rectangular groove 204 and extends into the air inlet chamber 304, communicating with it. The hook plate 301 has inflatable bags 503 on both sides, which communicate with the air inlet chambers 304 and the connecting pipes 502. When the rotating plate 402 rotates within the rectangular groove 204, it compresses the piston plate 501. When the piston plate 501 is compressed, it slides within the cylindrical groove 203. As the piston plate 501 slides, it compresses the gas inside the cylindrical groove 203, causing the gas to enter the air intake chamber 304 through the connecting pipe 502 and then into the air bag 503. This causes the air bag 503 to bulge slightly as the gas enters. The connecting pipe 502 is made of a flexible material, which reduces the impact on the sternum during sternal fixation caused by the cushioning effect of the bulging air bag 503 when the mother hook plate 205 is compressing the daughter hook plate 301.

[0046] In a further implementation, refer to Figure 8 and Figure 9 The swaying mechanism 6 includes an airbag 601. A long groove is provided in the middle of the side of the sub-hook plate 301 away from the female hook plate 205. The airbag 601 is located in the long groove. Multiple inflation holes are provided inside the sub-hook plate 301. The airbag 601 communicates with an inflation bag 503 through these inflation holes. A swaying plate 603 covers the side of the airbag 601 away from the female hook plate 205. Both ends of the swaying plate 603 are connected to the inner wall of the long groove through flexible layers. Two elastic plates 602 are fixedly connected to the side of the airbag 601 away from the female hook plate 205. The two elastic plates 602 extend towards and connect to the swaying plate 603 in a V-shape. The rocking plate 603 has two elastic plates 604 symmetrically distributed around the center of the rocking plate 603 on the side facing the airbag 601. The end of the elastic plate 604 away from the rocking plate 603 is fixedly connected to the inner wall of the elongated groove. When the airbag 601 is raised, it will push the two elastic plates 602 to slide apart to both sides. When the two elastic plates 602 are pushed by the airbag 601 after it is raised, the stretching of the rocking plate 603 by the elastic plates 602 can be reduced. In this way, the rocking of the rocking plate 603 can reduce the friction between the sternum and the hook plate 301 when the sternum changes.

[0047] A method of using a surgical sternal closure fixation device, referring to... Figure 10 This includes the following steps:

[0048] S1. Installation and Closure

[0049] When the sternum needs to be closed and fixed, first place the elastic plug 201 at one end of the main body 1, and then place the main body 1 and the fixing mechanism 2 on both sides of the sternum respectively.

[0050] S2, Move and Close

[0051] Push the flexible plug 201 into the main body 1, thereby causing the female hook plate 205 to move closer to the male hook plate 102, so as to achieve the purpose of closing the sternum.

[0052] S3, Restriction and Fixation

[0053] After the sternum is closed, a retaining plate is placed in the retaining groove 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, when it is necessary to close and fix the sternum, firstly, the elastic plug 201 is placed inside the main body 1. Then, the main body 1 and the fixing mechanism 2 are placed on both sides of the sternum. After that, 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 locked inside the main body 1 to achieve the purpose of fixing the sternum.

[0055] After 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 wall of the limiting plate 302 when the sternum is closed. When the patient coughs or sneezes, causing the sternum to rise and fall significantly, the two tension springs on the sub-hook plate 301 and the arc-shaped elastic plate on the main hook plate 205 will drive the sub-hook plate 301 to slide and finely adjust within the rectangular groove 204 under the elastic force of the reset. This allows the sub-hook plate 301 to adjust the gripping force and gripping position according to the expansion and contraction of the sternum during the patient's breathing, reducing the difficulty in adjusting the sternum when the sternum rises and falls due to the rigidity of the fixing device. This also reduces the situation where the rigidity of the fixing device makes it difficult to adjust the sternum when it rises and falls, resulting in local non-fitting between the fixing device and the sternum, which affects the stability of the sternum fixation, and improves the stability efficiency.

[0056] When the sub-hook plate 301 slides within the rectangular groove 204, its sliding motion causes the limiting plate 302 and the limiting strip 303 to push the sliding frame 401 towards the male hook plate 102. The limiting strip 303 pushes the sliding frame 401 to slide within the rotating plate 402. This sliding motion of the sliding frame 401 causes the rotating plate 402 to rotate upwards within the rectangular groove 204. As the rotating plate 402 rotates upwards, it causes the two triangular prisms 403 to slide upwards within the limiting plate 404. This compression of the triangular prisms 403 against the inclined surface at the bottom of the triangular plate 206 results in the inclined surface at the bottom of the triangular plate 206 being compressed. The device will then slide forward within the rectangular groove 204. As the two triangular plates 206 slide, they will drive the female hook plate 205 to slide synchronously. This allows the female hook plate 205 to slide towards the male hook plate 102 while the male hook plate 301 contracts with the changes in the sternum, thus clamping the male hook plate 301. This reduces the possibility of the male hook plate 301 shifting position when fixed to the sternum due to the periodic changes in the sternum as the patient breathes. This ensures the reliability of the fixation effect of the male hook plate 301 on the sternum as it changes with the changes in the sternum, reduces the possibility of displacement, and improves the reliability of the fixation effect on the sternum.

[0057] When the rotating plate 402 rotates within the rectangular groove 204, it compresses the piston plate 501. The piston plate 501, after being compressed, slides within the cylindrical groove 203. As the piston plate 501 slides, it compresses the gas inside the cylindrical groove 203, causing the gas to enter the air inlet chamber 304 through the connecting pipe 502 and then into the inflation bag 503. This causes the inflation bag 503 to slightly bulge due to the influx of gas. The female hook plate 205 slides and engages with the female hook plate 303. When 01 is squeezed, the raised air bag 503 on the sub-hook plate 301 will be squeezed. When the raised air 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. This can reduce the impact of the mother hook plate 205 on the sub-hook plate 301 when the mother hook plate 205 squeezes the sub-hook plate 301, thus reducing the discomfort caused to the patient during sternal fixation. This can further improve the stability of fixation.

[0058] When the inflated airbag 503 is compressed by the female hook plate 205, the gas inside the airbag 503 will enter the airbag 601 under the compression of the female hook plate 205, causing it to inflate. When the airbag 601 inflates, it will push the two elastic plates 602 to open. When the two elastic plates 602 are pushed by the inflated airbag 601, it can reduce the stretch of the elastic plates 602 on the rocking plate 603, so that the elastic plates 602 can rotate on the side wall of the rocking plate 603. At this time, The device enables the swaying plate 603 to sway within the elongated groove 2 via the elastic plate 604 when the sternum moves. This swaying of the swaying plate 603 reduces friction between the sternum and the hook plate 301 during changes in sternum position. It also reduces the frictional force generated when the sternum and the hook plate 301 are in direct contact, thus reducing damage to the sternal surface tissue and discomfort to the patient caused by friction. This further improves the stability and service life of the device.

[0059] Example 2

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

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A surgical sternal closure fixation device, characterized in that, The device includes a main body (1), with a male hook plate (102) at one bottom end. A fixing mechanism (2) is provided on the main body (1), comprising a flexible plug (201) and a female hook plate (205). The flexible plug (201) is located inside the main body (1), and the female hook plate (205) is connected to the end of the flexible plug (201) away from the male hook plate (102) and opposite to the male hook plate (102). A sliding mechanism (3) is provided on the fixing mechanism (2), comprising a female hook. Plate (301), the sub-hook plate (301) is provided 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). The elastic plug (201) is provided with an auxiliary mechanism (5) and a rotating mechanism (4). 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). The side wall of the sub-hook plate (301) facing the male hook plate (102) is provided with a swaying mechanism (6). The elastic plug (201) is provided with a cylindrical groove (203) and a rectangular groove (204). 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 male hook plate (301) are inserted into the rectangular groove (204). The two side walls of the end of the female hook plate (205) that extends into the rectangular groove (204) are provided with triangular plates (206). The bottom surface of the triangular plates (206) is inclined, and the bottom surface of the triangular plates (206) is inclined upward from the side close to the male hook plate (102) to the side away from the male hook plate (102). The side wall where the triangular plates (206) are located is provided with a long groove. A short rod is provided in the long groove. One end of the short rod is fixedly connected to the rectangular groove (204). The end of the sub-hook plate (301) inserted into the elastic plug (201) is fixedly connected to the limiting plate (302). The side wall of the limiting plate (302) is provided with a through sliding groove. A long rod is provided in the sliding groove. The two ends of the long rod are fixedly connected to the side wall of the rectangular groove (204). Two tension springs are fixedly connected to the end of the limiting plate (302) away from the sub-hook plate (301). The tension springs are fixedly connected to the bottom inner wall of the rectangular groove (204). The limiting plate (302) is fixedly connected to a limiting strip (303) at one end away from the sub-hook plate (301). The rotating mechanism is located in the rectangular groove (204) and includes a sliding frame (401) and a rotating plate (402). The rotating plate (402) has a through hole at one end near the male hook plate (102). A rotating shaft is provided in the through hole. Both ends of the rotating shaft are connected to the side wall of the rectangular groove (204). The lower end of the sliding frame (401) is sleeved on the limiting plate (302). Clamping rods are provided on the limiting plates (302) on both sides of the sliding frame (401). The clamping rods clamp and fix the sliding frame (401) on the limiting plates (302). Sliding rods extend from both sides of the upper end of the sliding frame (401). A T-shaped groove is provided at the bottom of the rotating plate (402). The sliding frame (401) is slidably connected to the T-shaped groove through the sliding rods. The rotating plate (402) has a through groove at one end near the female hook plate (205). A connecting rod is provided in the through groove. The two ends of the connecting rod extend out of the through groove and are provided with triangular prisms (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 inner sides of the two triangular prisms (403) are provided with vertical limiting plates (404). The two ends of the limiting plates (404) are fixedly connected with rectangular grooves (204). The limiting plates (404) are provided with vertical sliding grooves. The triangular prisms (403) are provided with short shafts. The short shafts are located in the sliding grooves and can slide up and down along the sliding grooves. The upper surface of the triangular prisms (403) is in contact with the lower surface of the triangular long plate (206). An auxiliary spring is fixedly connected above the rotating plate (402). The top of the auxiliary spring is fixedly connected to the top inner wall of the rectangular groove (204).

2. The surgical sternal closure fixator according to claim 1, characterized in that, The fixing mechanism (2) also includes a slot (202), which is located at one end of the elastic plug (201) near the male hook plate (102).

3. The surgical sternal closure fixator according to claim 1, characterized in that, The side wall where the mother hook plate (205) contacts the daughter hook plate (301) is provided with an elongated groove, and an arc-shaped elastic plate is provided in the elongated groove.

4. The surgical sternal closure fixator according to claim 1, characterized in that, The auxiliary mechanism includes a reset spring and a piston plate (501). The reset spring is located in a cylindrical groove (203). The piston plate (501) is located on one end of the reset spring (203) facing the rectangular groove (204). The piston plate (501) is sealed to the cylindrical groove (203). A connecting rod is located 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).

5. The surgical sternal closure fixator according to claim 4, characterized in that, The sub-hook plate (301) has an air inlet chamber (304) on both sides. The side wall of the air inlet chamber (304) has a plurality of air inlet holes (305). The piston plate (501) has a centrally symmetrical connecting pipe (502) on both sides. One end of the connecting pipe (502) is slidably connected to the piston plate (501) and communicates with the cylindrical groove (203). The other end is fixedly connected to the side wall of the rectangular groove (204) and extends into the air inlet chamber (304) and communicates with the air inlet chamber (304). The sub-hook plate (301) has an inflatable bag (503) on both sides. The inflatable bag (503) is connected to the air inlet chamber (304) and the connecting pipe (502).

6. The surgical sternal closure fixator according to claim 5, characterized in that, The swaying mechanism (6) includes an airbag (601). A long groove 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 located in the long groove. Multiple inflation holes are provided inside the sub-hook plate (301). The airbag (601) communicates with an inflation bag (503) through these inflation holes. A swaying plate (603) covers the side of the airbag (601) away from the mother hook plate (205). Both ends of the swaying plate (603) are connected to the long groove via flexible layers. The inner walls are connected, and two elastic plates (602) are fixedly connected to the side of the airbag (601) away from the mother hook plate (205). The two elastic plates (602) extend towards the shaking plate (603) in a figure-eight 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 of the shaking plate (603) as the center. The end of the elastic plate (604) away from the shaking plate (603) is fixedly connected to the inner wall of the elongated groove.

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