Assembled overturning-free funnel chest correcting device

Abstract

The utility model relates to the technical field of medical instruments, in particular to an assembled overturning-free funnel chest correcting device which comprises an auxiliary plate and an orthopedic plate. The auxiliary plate is in a long strip shape and can be bent to form, and the first end of the auxiliary plate is provided with a penetrating head and a fixing hole. The shape correcting plate is in a long strip shape, is made of memory metal and is fixedly connected with the fixing holes through the mounting holes. In order to solve the problem that an existing turnover-free orthopedic plate is relatively difficult in the penetrating process, the assembled orthopedic device is designed and is composed of an auxiliary plate and an orthopedic plate. The orthopedic plate is pre-designed into a postoperative supporting concave thoracic cavity shape and is cooled and shaped to a curvature shape the same as that of the auxiliary plate during an operation, the orthopedic plate and the auxiliary plate are assembled into a whole for penetration, the auxiliary plate is pulled out after penetration, the orthopedic plate is heated to recover the designed supporting shape, and the problem that penetration is difficult in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an assembled, flip-free pectus excavatum correction device. Background Art

[0002] The Nuss procedure, a minimally invasive procedure for treating pectus excavatum (PE), was first published by American physician Dr. Nuss in 1998. Pectus excavatum (PE) is an inward depression of the middle and lower sternum and the adjacent costal cartilages, resulting in a funnel-like deformity. The main characteristic is a dorsal tilt and depression of the sternum from the lower edge of the manubrium to the upper edge of the xiphoid process, accompanied by dorsal bending of the corresponding costal cartilages on both sides, resulting in a funnel-shaped lower chest wall. The deepest point of the depression is usually at the junction of the lower end of the sternum and the xiphoid process. The Nuss procedure involves the insertion of a thoracic support plate under thoracoscopy guidance to lift the collapsed sternum and push the deformed costal cartilages outward. The plates are secured at both ends with two-hole fixation bars, which are then wrapped around rib wires to support the collapsed sternum and achieve chest wall correction.

[0003] In the prior art, common Nuss orthotic plates include early orthotic plates and non-flip orthotic plates. Among them, the main part of the early orthotic plates is usually a long metal plate of different specifications and sizes, and the specifications are selected and bent according to the target shape of the correction before surgery. Since the chest cavity of patients with funnel chest is sunken, and the ideal chest shape is an upward bulge with a certain curve. Therefore, after this type of orthotic plate is bent into a predetermined shape, it is necessary to make an incision in the patient's chest during surgery and then bury the orthotic plate with a downward arc along the sunken trajectory. The orthotic plate is then flipped in the patient's chest cavity, and the bending direction of the orthotic plate is flipped upward to achieve the support process. This action has a large degree of flipping, which can easily cause significant damage to the chest wall tissue and requires a relatively high level of operating skills from the doctor. In response to this, the improved non-flip orthotic plate, by improving the surgical method, allows the doctor to directly insert it along the incision during surgery and transition from a concave trajectory to a convex trajectory to complete the shaping process.

[0004] However, during the actual implementation process, the inventors found that although this type of orthopedic plate avoids the flipping process, it still needs to be pre-formed and is in the opposite arch shape of the patient's pectus excavatum. During the surgical insertion process, the doctor needs to expend a lot of force to insert it manually. Utility Model Content

[0005] In view of the above problems existing in the prior art, an assembled, non-flipping pectus excavatum correction device is now provided.

[0006] The specific technical solutions are as follows:

[0007] An assembled, non-flipping pectus excavatum correction device comprises an auxiliary plate and a correction plate;

[0008] The auxiliary plate is in the shape of an elongated strip, a first end of the auxiliary plate is provided with a penetration head, a rear end of the penetration head is provided with a first fixing hole, and a second end of the auxiliary plate is provided with a second fixing hole;

[0009] The auxiliary plate is pre-bent into a first preset curvature;

[0010] The orthopedic plate is in the shape of an elongated strip, a first end of the orthopedic plate is provided with a first mounting hole, and a second end of the orthopedic plate is provided with a second mounting hole;

[0011] The orthopedic plate is pre-bent into a second preset curvature, and the orthopedic plate is made of memory metal;

[0012] The orthopedic plate is arranged to fit the auxiliary plate in a low hardness state, the first mounting hole and the first fixing hole are connected by a first fixing device, and the second mounting hole and the second fixing hole are connected by a second fixing device.

[0013] On the other hand, the second fixing hole is in the shape of an elongated strip, and the second fixing hole is arranged along the long axis direction of the auxiliary plate.

[0014] On the other hand, the first end of the orthopedic plate is provided with a first sunken structure, wherein the thickness of the first sunken structure in a cross section is smaller than the thickness of the main body of the orthopedic plate;

[0015] The first mounting hole is provided on the first sinking structure.

[0016] On the other hand, the second end of the orthopedic plate is provided with a second sunken structure, and the thickness of the second sunken structure in the cross section is smaller than the thickness of the main body portion;

[0017] The second mounting hole is provided on the second sinking structure.

[0018] In another aspect, the body portion includes a separable first body portion and a second body portion;

[0019] A sliding guide groove is provided at the tail end of the first main body portion;

[0020] The front end of the second main body is provided with a sliding structure matching the sliding guide groove.

[0021] On the other hand, the cross section of the sliding guide groove is concave-shaped, and the sliding guide groove is grooved in the front view direction.

[0022] On the other hand, the sliding structure includes a fork portion, a transition section, and a main body section;

[0023] The left and right sides of the fork are aligned with the sliding guide groove, and a recess is formed at the front end of the fork;

[0024] The transition section is connected to the end of the fork portion, the width of the transition section is narrower than the width of the fork portion, and the transition section bulges upward from the hollow portion of the sliding guide groove;

[0025] The main body section is connected to the end of the transition section.

[0026] On the other hand, a plurality of pairs of round teeth are processed on the main body along the short axis direction.

[0027] On the other hand, the penetration head is an isosceles trapezoid in a top view, and the width of the end point of the penetration head is smaller than the width of the main body of the auxiliary plate;

[0028] The two upper corners of the isosceles trapezoid are processed with round chamfers;

[0029] The penetration head is in the shape of a round cone in the front view direction, and a circular arc is arranged at the rear of the penetration head.

[0030] On the other hand, the non-inversion pectus excavatum correction device also includes a flexible heating tube, a traction hole is provided at the head of the flexible heating tube, the traction hole is connected to the second fixing hole, a heat circulation tube is provided inside the flexible heating tube, the heat circulation tube is connected to an external heating device and is filled with physiological saline.

[0031] The above technical solution has the following advantages or beneficial effects:

[0032] To address the difficulty of inserting conventional non-flipping orthotic plates, this solution provides an assembled orthotic device consisting primarily of an auxiliary plate and a corrective plate. The corrective plate is made of memory metal and can be pre-shaped to the desired corrective shape. Its hardness can be adjusted by cooling, allowing it to be assembled with an orthotic plate with a suitable curvature for insertion. After insertion, the auxiliary plate is removed and heated to restore its shape, allowing for easier insertion into the patient's chest and subsequent restoration, thus avoiding the difficulty of insertion found in conventional orthotic devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The embodiments of the present invention will be described more fully with reference to the accompanying drawings, which are for illustration and description only and are not intended to limit the scope of the present invention.

[0034] Figure 1 This is a side view of the auxiliary plate in the embodiment of the present utility model;

[0035] Figure 2 This is a top view of the auxiliary plate in the embodiment of the utility model;

[0036] Figure 3 This is a side view of the orthopedic plate in the embodiment of the present utility model;

[0037] Figure 4 This is a top view of the orthopedic plate in the embodiment of the present utility model;

[0038] Figure 5 This is a schematic diagram of a cross section of a guide groove in an embodiment of the present utility model;

[0039] Figure 6 This is a schematic diagram of a flexible heating tube in an embodiment of the present utility model;

[0040] Figure 7 It is a combined schematic diagram of an embodiment of the utility model. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0043] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0044] The utility model includes:

[0045] An assembled, non-flipping pectus excavatum correction device comprises an auxiliary plate 1 and a correction plate 2;

[0046] like Figure 1 、 Figure 2 As shown, the auxiliary plate 1 is in the shape of an elongated strip, a first end of the auxiliary plate 1 is provided with a penetration head 11, a rear end of the penetration head 11 is provided with a first fixing hole 12, and a second end of the auxiliary plate 1 is provided with a second fixing hole 13;

[0047] The auxiliary plate 1 is pre-bent into a first preset curvature;

[0048] like Figure 3 、 Figure 4 As shown, the orthopedic plate 2 is in the shape of an elongated strip, a first mounting hole 21 is provided at the first end of the orthopedic plate 2, and a second mounting hole 22 is provided at the second end of the orthopedic plate 2;

[0049] The orthopedic plate 2 is pre-bent into a second preset curvature, and the orthopedic plate 2 is made of memory metal;

[0050] The orthopedic plate 2 is placed against the auxiliary plate 1 in a low hardness state, the first mounting hole 21 and the first fixing hole 11 are connected by a first fixing device, and the second mounting hole 22 and the second fixing hole 12 are connected by a second fixing device.

[0051] Specifically, to address the difficulty in inserting non-flipped orthotic plates in the prior art, this embodiment provides an assembled correction device, primarily consisting of an auxiliary plate 1 and an orthotic plate 2. The orthotic plate 2 is made of memory metal, and its postoperative correction support shape is designed based on the patient's condition. During surgery, it undergoes cold secondary plasticization to the same shape and curvature as the auxiliary plate 1, allowing it to be assembled with the auxiliary plate 1, which has a curvature suitable for insertion, for insertion. After insertion, the auxiliary plate 1 is removed and heated to restore the designed support shape. Using the auxiliary plate 1, the orthotic plate 2 can be more easily inserted into the patient's chest cavity and then restored to the designed shape, thus avoiding the difficulty in insertion in the prior art.

[0052] Specifically, if Figure 1 As shown, the auxiliary plate 1 is in the shape of a long strip. The hyperbola shown in the figure is the omitted length. The omitted part has no specific technical features. Figures 2 to 4 The hyperbola in [ ] has the same meaning. The first end of the auxiliary plate 1 is provided with a penetration head 11, shaped like a flat duckbill. Its width and thickness gradually expand to facilitate penetration along the incision, cutting and penetrating muscle tissue. A first fixing hole 12 is provided behind the penetration head 11, and a second fixing hole 13 is provided at the second end of the auxiliary plate 1 for subsequent connection to the orthopedic plate 2.

[0053] Typically, the auxiliary plate 1 is a series of long, flat metal strips made of a hard metal such as stainless steel, with a smooth surface and low roughness. These strips can be manufactured in a variety of curvature radii, tailored to the specific curvature of pectus excavatum or based on the key parameters of pectus excavatum. Due to their rigidity, they can be held by hand or with a clamping tool at the end, facilitating insertion of the auxiliary plate 1 and orthotic plate 2 into the chest cavity.

[0054] Accordingly, the orthopedic plate 2 is made of memory metal, such as nickel-titanium alloy. The hardness of this type of alloy will decrease at low temperatures and it will be easy to adjust the shape. The hardness and shape will be restored at another higher temperature node. Based on this characteristic, the orthopedic plate 2 will be pre-formed before the operation begins to support the sunken chest cavity after the operation, so that it has a second preset curvature that meets the ideal orthopedic contour. Before the operation, the orthopedic plate 2 is cooled to reduce its hardness, so that the orthopedic plate 2 can be bent into the first preset curvature and connected to the auxiliary plate 1. Specifically, the first mounting hole 21 and the first fixing hole 12 are connected by a first fixing device, and the second mounting hole 22 and the second fixing hole 13 are connected by a second fixing device. The first fixing device and the second fixing device are generally a combination of bolts and nuts or other equivalent connectors that can be used for surgery.

[0055] Then, the combination of the auxiliary plate 1 and the orthopedic plate 2 can be smoothly inserted into the chest cavity along the collapsed contour of the pectus excavatum because the combination of the auxiliary plate 1 and the orthopedic plate 2 has a first preset curvature that conforms to the sinking curve.

[0056] When the predetermined position is reached, the first fixing device and the second fixing device are removed, the auxiliary plate 1 is taken out from the incision on the other side, and the orthopedic plate 2 is connected to the sternum.

[0057] Subsequently, the chest cavity is heated up so that the hardness of the orthopedic plate 2 increases and returns to the second preset curvature.

[0058] During the above process, since the auxiliary plate 1 has a first preset curvature that conforms to the collapsed shape and has a high hardness, it can be inserted into the chest cavity more conveniently, avoiding the inconvenience of the insertion process of the non-flipping orthotic plate in the prior art. At the same time, by using memory metal to prepare the orthotic plate 2, it can be smoothly inserted into the chest cavity for support, avoiding the problem of poor insertion or damage to the chest cavity.

[0059] In one embodiment, the second fixing hole 13 is in a strip shape and is arranged along the long axis direction of the auxiliary plate 1 .

[0060] Specifically, to address the issue of patients of varying body shapes requiring orthopedic plates 2 of varying sizes during surgery, in this embodiment, the shape of the second fixing hole 13 has been adjusted to form an elongated strip, arranged along the long axis of the auxiliary plate 1. This oblong second fixing hole 13 can accommodate orthopedic plates 2 of any length and be clamped and secured by the second fixing device.

[0061] In one embodiment, a first sinking structure is provided at the first end of the orthopedic plate 2, and the thickness of the first sinking structure in the cross section is less than the thickness of the main body of the orthopedic plate;

[0062] The first mounting hole 21 is provided on the first sinking structure;

[0063] The second end of the orthopedic plate 2 is provided with a second sunken structure, and the thickness of the second sunken structure in the cross section is smaller than the thickness of the main body;

[0064] The second mounting hole 22 is provided on the second sinking structure.

[0065] Specifically, in order to facilitate the insertion of the combined auxiliary plate 1 and the orthopedic plate 2, in this embodiment, the connection structure on both sides of the orthopedic plate 2 is adjusted, and a first sinking structure and a second sinking structure with smaller thickness are provided, which can reduce the thickness of the joint part during the subsequent connection process.

[0066] In one embodiment, Figure 3 、 Figure 4 As shown, the main body portion includes a separable first main body portion 23 and a second main body portion 24;

[0067] The tail end of the first main body portion 23 is provided with a sliding guide groove 25;

[0068] A sliding structure 26 matching the sliding guide groove 25 is provided at the front end of the second main body portion 24 .

[0069] Specifically, for some patients, chest expansion may occur during the postoperative recovery process, and the fixed-length orthotic plate cannot well meet the needs of chest deformation. In this embodiment, the main part of the orthotic plate 2 is set to a detachable first main part 23 and a second main part 24, which are matched by a sliding guide groove 25 and a sliding structure 26. When the patient's chest cavity expands, relative displacement will occur between the sliding guide groove 25 and the sliding structure 26 to extend the overall length of the orthotic plate 2, thereby meeting relevant needs.

[0070] Among them, such as Figure 5 As shown, the cross section of the sliding guide groove 25 is concave, and the sliding guide groove 25 is grooved in the front view direction.

[0071] The sliding guide groove 25 includes a bottom surface and sidewalls on both sides of the groove, and the upper edge of the groove extends inward to clamp the sliding structure.

[0072] Correspondingly, the sliding structure 26 includes a fork portion 261 , a transition section 262 and a main body section 263 ;

[0073] The left and right sides of the fork portion 261 are aligned with the sliding guide groove 25 , and a recess is formed at the front end of the fork portion 261 ;

[0074] The transition section 262 is connected to the end of the fork portion 261. The width of the transition section 262 is narrower than the width of the fork portion. The transition section 262 bulges upward from the hollow portion of the sliding guide groove.

[0075] The main body section 263 is connected to the end of the transition section.

[0076] Specifically, to achieve a better connection and fixation effect, in this embodiment, the bottom surface of the sliding guide groove 25 is grooved in the front view direction. The sliding guide groove 25 is provided on one side of the back of the orthopedic plate 2. The left and right sides of the fork portion 261 match the sliding guide groove 25. The front end of the fork portion 261 has a recessed portion that forms an arc structure with the groove position of the sliding guide groove 25.

[0077] Subsequently, the transition section 262 is connected to the end of the fork 261, and the width of the transition section 262 is narrowed relative to the width of the fork so that the transition section 262 can pass through the slot of the sliding guide groove 25. The transition section 262 bulges upward from the hollow part of the sliding guide groove to the front of the orthopedic plate 2, and finally, the main body section 263 is connected.

[0078] By means of the above-mentioned curved slide groove structure, both ends of the orthopedic plate 2 can have the same horizontal height, and can meet the requirements of sliding extension and overall thickness consistency.

[0079] In one embodiment, a plurality of pairs of round teeth are machined on the main body along the short axis direction.

[0080] In one embodiment, the penetration head 11 is in the shape of an isosceles trapezoid when viewed from above, and the width of the end point of the penetration head 22 is smaller than the width of the main body of the auxiliary plate;

[0081] The two top corners of the isosceles trapezoid are processed with round chamfers;

[0082] The penetration head 22 is in the shape of a rounded cone when viewed from the front, and a circular arc is provided at the rear of the penetration head.

[0083] In one embodiment, Figure 6 As shown, it also includes a flexible heating tube 3, a traction hole 31 is provided at the head of the flexible heating tube 3, the traction hole 31 is connected to the second fixing hole 22, a heat circulation tube 32 is provided in the flexible heating tube 3, the heat circulation tube 32 is connected to the external heating device and is filled with physiological saline.

[0084] Specifically, after inserting the orthotic plate 2 and removing the auxiliary plate 1, the orthotic plate 2 needs to be heated to restore its shape due to its material properties. To address this issue, a flexible heating tube 3 is also designed in this embodiment. A heat circulation tube 32 is provided within the flexible heating tube 3, which is connected to an external heating device and is fed with saline solution. Specifically, the flexible heating tube 3 is in the shape of an elongated rectangle and includes a polymer sleeve. A heat circulation tube 32 is wrapped within the polymer sleeve as a water channel that connects to an external heating device and is fed with saline solution. The heating device circulates the saline solution through a pump and heats it.

[0085] A wire spring is wound around the heat circulation pipe 32 to increase the strength of the pipe. A thermal sensor 33 is provided at the bend near the end of the heat circulation pipe 32 to collect and control the temperature.

[0086] Figure 7 Schematic diagram of the combination of the above-mentioned instruments.

[0087] During implementation, the correction device may be used in accordance with the following procedures, including:

[0088] 1. Select the correct orthotic plate and auxiliary plate for the PE patient, clean and disinfect them. Shape the orthotic plate in ice water and connect it to the already formed auxiliary plate.

[0089] 2. Set an incision on the patient's chest. Insert the combined orthopedic plate and auxiliary plate into the patient's chest wall, and use an endoscope to observe the insertion of the combined plate until it exits through the incision at the other end of the chest wall.

[0090] 3. Separate the orthopedic plate and the auxiliary plate, and use the hole at the tail of the auxiliary plate to connect the connecting device on the saline heating circulation flexible heating tube. Slowly pull out the auxiliary plate and at the same time pull the flexible heating tube into the chest wall (this tube is basically close to the orthopedic plate). When the auxiliary plate is completely pulled out and the flexible heating tube reaches the position, separate the auxiliary plate and the flexible heating tube.

[0091] 4. Start heating the flexible heating tube to heat the orthotic plate and restore its shape to the designed state. Pull out the flexible heating tube.

[0092] 5. Suture and bandage according to normal surgical requirements.

[0093] 6. After 2 to 3 years, the orthotic plate will be removed according to the recovery situation. An incision can be made at both ends of the chest cavity, and the orthotic plate can be slowly pulled to separate the connecting section in the middle of the orthotic plate, and then pulled out from the incisions on both sides of the chest at the same time.

[0094] The above are only preferred embodiments of the present invention and do not limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An assembled, non-flipping pectus excavatum correction device, characterized in that: Including auxiliary boards and orthotic boards; The auxiliary plate is in the shape of an elongated strip, a first end of the auxiliary plate is provided with a penetration head, a rear end of the penetration head is provided with a first fixing hole, and a second end of the auxiliary plate is provided with a second fixing hole; The auxiliary plate is pre-bent into a first preset curvature; The orthopedic plate is in the shape of an elongated strip, a first end of the orthopedic plate is provided with a first mounting hole, and a second end of the orthopedic plate is provided with a second mounting hole; The orthopedic plate is pre-bent into a second preset curvature, and the orthopedic plate is made of memory metal; The orthopedic plate is arranged to fit the auxiliary plate in a low hardness state, the first mounting hole and the first fixing hole are connected by a first fixing device, and the second mounting hole and the second fixing hole are connected by a second fixing device.

2. The non-inversion pectus excavatum correction device according to claim 1, characterized in that: The second fixing hole is in the shape of an elongated strip and is arranged along the long axis direction of the auxiliary plate.

3. The non-inversion pectus excavatum correction device according to claim 1, characterized in that: A first sinking structure is provided at the first end of the orthopedic plate, wherein the thickness of the first sinking structure in a cross section is smaller than the thickness of the main body of the orthopedic plate; The first mounting hole is provided on the first sinking structure.

4. The non-inversion pectus excavatum correction device according to claim 3, characterized in that: The second end of the orthopedic plate is provided with a second sunken structure, wherein the thickness of the second sunken structure in the cross section is smaller than the thickness of the main body portion; The second mounting hole is provided on the second sinking structure.

5. The non-inversion pectus excavatum correction device according to claim 3, characterized in that: The main body portion includes a separable first main body portion and a second main body portion; A sliding guide groove is provided at the tail end of the first main body portion; The front end of the second main body is provided with a sliding structure matching the sliding guide groove.

6. The non-inversion pectus excavatum correction device according to claim 5, characterized in that: The cross section of the sliding guide groove is concave-shaped, and the sliding guide groove is grooved in the front view direction.

7. The non-inversion pectus excavatum correction device according to claim 5, characterized in that: The sliding structure includes a fork portion, a transition section and a main body section; The left and right sides of the fork are aligned with the sliding guide groove, and a recess is formed at the front end of the fork; The transition section is connected to the end of the fork portion, the width of the transition section is narrower than the width of the fork portion, and the transition section bulges upward from the hollow portion of the sliding guide groove; The main body section is connected to the end of the transition section.

8. The non-inversion pectus excavatum correction device according to claim 3, characterized in that: The main body is machined with a plurality of pairs of round teeth along the minor axis direction.

9. The non-inversion pectus excavatum correction device according to claim 1, characterized in that: The penetration head is in the shape of an isosceles trapezoid when viewed from above, and the width of the end point of the penetration head is smaller than the width of the main body of the auxiliary plate; The two upper corners of the isosceles trapezoid are processed with round chamfers; The penetration head is in the shape of a round cone in the front view direction, and a circular arc is arranged at the rear of the penetration head.

10. The non-inversion pectus excavatum correction device according to claim 1, characterized in that: The non-inversion pectus excavatum correction device also includes a flexible heating tube, a traction hole is provided at the head of the flexible heating tube, the traction hole is connected to the second fixing hole, a heat circulation tube is provided inside the flexible heating tube, the heat circulation tube is connected to an external heating device and is filled with physiological saline.

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