CN209695263U - A kind of unloading apparatus of support frame for Nuss operation - Google Patents

Abstract

The utility model relates to an unloading instrument for a support frame used in Nuss surgery. The support frame includes a main steel plate and a fixed plate. holes, the two ends of the fixing plate are provided with a second installation hole, and the unloading instrument includes a first rod body and a second rod body, both of which have a first end and a second end, and the first rod body and the second rod body The first end is formed with a grip portion for holding by human hands, the second end of the first rod is formed with a first protrusion, and the second end of the second rod is formed with a second protrusion. The unloading device uses the method of rotating and sliding to convert the rotational force into the force of sliding and detaching the fixed plate, which makes the disassembly of the support frame for Nuss surgery more effective, greatly reduces the surgical intensity of the medical staff, makes the operation more convenient, and improves the operation efficiency; And the doctor only needs to operate with one hand, and the other hand is used as an assistant, which makes the operation process more stable.

Description

A kind of unloading apparatus of support frame for Nuss operation

technical field

The utility model relates to an unloading instrument for a support frame used in Nuss operation.

Background technique

Pectus excavatum Nuss operation is a minimally invasive operation for the treatment of pectus excavatum developed by Dr. Donald Nuss of Children's Hospital of King'sDaughters in Virginia, USA in 1998. The method is simple and the postoperative effect is remarkable. It not only corrects the position of the sternum and ribs , have a full chest, improve cardiopulmonary function, and there is no incision on the front chest wall, no need for rib resection and pectoralis major muscle incision, and it is quickly accepted by doctors and patients all over the world. After ten years of continuous improvement, it has become the standard operation for the treatment of pectus pectus excavatum. 6 to 12 years old is considered to be the best time for Nuss to correct the pectus pectus excavatum. This surgery is to implant a shaped support frame under the guidance of thoracoscopic surgery to correct the depression of the sternum and ribs. The support frame generally needs to be left in the body for more than 2 years before it is removed. The support frame mainly includes an arc-shaped NUSS main steel plate made of titanium alloy and a fixed plate that fixes the main steel plate at the ribs on both sides of the patient. When performing Nuss surgery, the traditional NUSS main steel plate needs to be passed through plastic clamps or benders first. Bend it into an arc, insert the main NUSS steel plate into the human body through the operation port, then take the fixing plate, insert the two ends of the main NUSS steel plate into the slots of the two fixing plates respectively, and then use surgical sutures Suture the fixed plate on the patient's periosteum; when the support frame is removed after 2 years, the surgical opening is cut at the fixed plate of the human body, and the fixed plate whose card slot is stuck on the main steel plate needs to be removed from the main steel plate first , it is necessary to slide the position of the fixing plate relative to the main steel plate to make it fall off from the end of the main steel plate. However, since the main steel plate and the fixing plate have been left in the human body for many years, their position is fixed relative to the human body. The fixing plate slides down from the main steel plate, and the process is very difficult. In the prior art, the doctor uses one hand to clamp the fixing plate through the surgical wound with pliers or instruments, and the other hand uses another forceps or instrument to insert the fixed plate through the surgical wound. The main steel plate is stabilized, and then dragged hard to make the fixed plate slide down from the end of the main steel plate. It is necessary to overcome the resistance of the muscles and use a lot of force. Moreover, due to the constraints of the small wound and the position of the wound, the force cannot be smoothly exerted. , often in the process of dragging, it is easy to make the pliers or instruments slip off from the main steel plate or the fixed plate, so that the fixed block will slide back to its original position, and it is necessary to apply force again until the fixed plate is separated from the main steel plate. This process is directly affected by the hand feeling. It often takes many efforts to separate the fixed plate from the main steel plate. Repeated operations not only aggravate the pain of the patient, but also consume a lot of energy of the medical staff, and the efficiency of the operation is very low; currently there is no special The instrument used to slide the fixation plate off the end of the main plate. Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a medical device that can make the fixing block easy to remove.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, and provide an unloading instrument for a support frame used in Nuss surgery.

For solving the problems of the technologies described above, the technical scheme that the utility model takes is as follows:

An unloading instrument for a support frame used in Nuss surgery, the support frame includes a main steel plate and a fixed plate, the fixed plate is provided with a draw-in slot that cooperates with the end of the main steel plate, the two ends of the main steel plate are provided with a first installation hole, and the fixed plate There are second installation holes at both ends of the unloading device. The unloading instrument is in the shape of a pliers, which includes a first rod body and a second rod body that are intersected and rotated at the intersection. The first rod body and the second rod body have a second rod body located on the same side. One end and the second end on the same side, the first ends of the first rod body and the second rod body are formed with gripping parts for human hands to hold, and the second end of the first rod body is formed with a The first protruding column, the second end of the second rod body is formed with a second protruding column that fits and engages with the second mounting hole.

Preferably, the first rod body and the second rod body are made of stainless steel, which is easy to manufacture. Compared with the high price of the Nuss surgical support frame, the manufacturing cost of the forceps unloading instrument is very low.

Preferably, the length of the first protrusion is 2.85±0.05mm, and the diameter of the first protrusion is 3.85±0.05mm.

Preferably, the length of the second protrusion is 3.35±0.05mm, and the diameter of the second protrusion is 5.75±0.05mm.

Preferably, when the first rod body and the second rod body are rotated close together, the linear distance from the first protruding post to the second protruding post is 12 mm to 18 mm. It is more convenient for the first rod body and the second rod body to be opened. And the appropriate straight-line distance makes it convenient to manually control the opening distance from the first boss to the second boss during the operation, so that the first boss and the second boss are adjusted to a suitable distance value and inserted into the first boss respectively. mounting hole and the second mounting hole.

Preferably, both the first rod body and the second rod body have a straight rod segment and an oblique rod segment connected near their second ends, the first protrusion is formed on the straight rod segment of the first rod body, and the second protrusion is formed on the straight rod segment of the first rod body. On the straight rod section of the second rod body, the oblique rod section of the first rod body and the oblique rod segment of the second rod body both extend toward the rotational connection between the first rod body and the second rod body.

Preferably, the angle between the connected straight bar section and the inclined bar section is 150°-160°.

Preferably, the lengths of the straight rod section of the first rod body and the straight rod segment of the second rod body are both 11 mm to 15 mm.

Preferably, the lengths of the oblique rod section of the first rod body and the oblique rod segment of the second rod body are both 15 mm to 19 mm.

Preferably, the rod diameter of each straight rod segment and the rod diameter of each oblique rod segment are both 7mm-7.5mm. Guarantee the optimal strength of the straight and diagonal sections to avoid bending due to excessive force.

Preferably, the total length of the first rod body and the total length of the second rod body are both a, the straight rod section of the first rod body plus the total length of the diagonal rod segment and the straight rod section of the second rod body plus the total length of the diagonal rod segment The total length is 1/6~1/5 of a. Provides the best moment arm.

Due to the implementation of the above technical solutions, the utility model has the following advantages compared with the prior art:

The unloading instrument of the Nuss surgical support frame of the utility model is a pincer-shaped instrument, and a first convex post and a second convex post are arranged at its far end. When in use, the first convex post and the second convex post are inserted into the first installation hole and the second mounting hole, and then apply a rotational force on the gripping parts of the first rod body and the second rod body, so that the second boss rotates around the first boss, and the fixed plate will be rotated during the rotation Slide off the end of the main plate. The unloading instrument of the support frame for Nuss surgery of the utility model uses the way of rotation and sliding to convert the rotational force into the force of the sliding and detaching of the fixed plate, so that the work of dismantling the support frame for Nuss surgery can be done with half the effort, greatly reducing the surgical intensity of the medical staff. It makes the operation more convenient and improves the efficiency of the operation; and the doctor only needs to operate with one hand, and the other hand is used as an auxiliary, making the operation process more stable.

Description of drawings

Fig. 1 is the schematic diagram of the three-dimensional structure of the main steel plate and the fixed plate of the present invention when they are installed in cooperation;

Fig. 2 is the three-dimensional structure schematic diagram of the fixed plate of the present invention;

Fig. 3 is a schematic diagram of the main structure of the unloading device of the present invention;

Among them: 1. The first rod body; 10. The gripping part of the first rod body; 11. The first convex column; 12. The straight rod section of the first rod body; 13. The oblique rod section of the first rod body; 2. The second rod body ; 20, the grip part of the second rod body; 21, the second convex post; 22, the straight rod section of the second rod body; 23, the oblique rod section of the second rod body; 30, the main steel plate; 301, the first installation hole; 40. Fixed plate; 401. Second installation hole; 402. Card slot.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

As shown in Figures 1 to 3, an unloading instrument for a Nuss surgical support frame, the support frame includes a main steel plate 30 and a fixed plate 40, and the fixed plate 40 is provided with a card slot 402 that is engaged with the end of the main steel plate 30. The two ends of the steel plate 30 are provided with a first installation hole 301, and the two ends of the fixed plate 40 are provided with a second installation hole 401. The unloading instrument is in the shape of a pincer, which includes the first rod body 1 and the first rod body 1 which intersect and rotate at the intersection. The second rod body 2, the first rod body 1 and the second rod body 2 all have a first end on the same side and a second end on the same side, and the first ends of the first rod body 1 and the second rod body 2 form a During the operation, the hand holds the grip part 10 of the first rod body and the grip part 10 of the second rod body for operation. The first protruding post 11 connected to the second rod body 2 is formed with a second protruding post 21 that fits into the second mounting hole 401 at the second end.

The material of the first rod body 1 and the second rod body 2 of the utility model is stainless steel, which is simple to manufacture. Compared with the high price of the Nuss surgical support frame, the manufacturing cost of the pliers-shaped unloading device is very low.

Specifically, the length of the first protrusion 11 is 2.85 mm, and the diameter of the first protrusion 11 is 3.85 mm. The length of the second protrusion 21 is 3.35 mm, and the diameter of the second protrusion 21 is 5.75 mm. After the first rod body 1 and the second rod body 2 are turned close together, the linear distance from the first protruding post 11 to the second protruding post 21 is 12 mm. It is more convenient to open the first rod body 1 and the second rod body 2 . And a suitable linear distance makes it convenient to manually control the opening distance between the first boss 11 and the second boss 21 during the operation, so that after the first boss 11 and the second boss 21 are adjusted to a suitable distance value, Insert them into the first mounting hole 301 and the second mounting hole 401 respectively.

Further, the first rod body 1 and the second rod body 2 both have a straight rod section and an oblique rod section connected near their second ends, the first boss 11 is formed on the straight rod section 12 of the first rod body, and the second The protruding column 21 is formed on the straight rod section 12 of the second rod body, and the oblique rod section 12 of the first rod body and the oblique rod segment 12 of the second rod body both extend toward the rotational joint of the first rod body 1 and the second rod body 2 . The lengths of the straight rod section 12 of the first rod body and the straight rod section 12 of the second rod body are both 13mm. The lengths of the oblique rod section 12 of the first rod body and the oblique rod section 12 of the second rod body are both 17mm. The included angle between the connected straight bar section and the inclined bar section is 155°. The rod diameter of each straight rod segment and the rod diameter of each oblique rod segment are 7mm. Guarantee the optimal strength of the straight and diagonal sections to avoid bending due to excessive force. Assuming that the total length of the first rod body 1 and the total length of the second rod body 2 are a, the straight rod section 12 of the first rod body plus the total length of the oblique rod section and the straight rod section 12 of the second rod body plus the oblique rod section The total length of is 1/6 of a. The setting of the above parameter values can provide the best arm and the best strength for the unloading device. The operation can be carried out smoothly.

In summary, the unloading instrument of the Nuss surgical support frame of the present utility model is a pincer-like instrument, and a first convex post and a second convex post are arranged at its far end, and the first convex post and the second convex post are arranged in use. The post is inserted into the first installation hole and the second installation hole, and then a rotational force is applied to the holding part of the first rod body and the second rod body, so that the second post rotates around the first post. The middle fixing plate then slides away from the end of the main steel plate. The unloading instrument of the support frame for Nuss surgery of the utility model uses the way of rotation and sliding to convert the rotational force into the force of the sliding and detaching of the fixed plate, so that the work of dismantling the support frame for Nuss surgery can be done with half the effort, greatly reducing the surgical intensity of the medical staff. It makes the operation more convenient and improves the efficiency of the operation; and the doctor only needs to operate with one hand, and the other hand is used as an auxiliary, making the operation process more stable. In addition, the unloading device of the utility model is simple to manufacture, and the manufacturing cost is very low.

The utility model has been described in detail above, its purpose is to allow those familiar with the technology in this field to understand the content of the utility model and implement it, and can not limit the scope of protection of the utility model. All equivalent changes or modifications made in essence shall fall within the protection scope of the present utility model.

Claims (10)

1. an unloading apparatus of a Nuss operation support frame, the support frame includes a main steel plate and a fixed plate, and the fixed plate is provided with a draw-in groove cooperating with the end of the main steel plate, and the two sides of the main steel plate A first installation hole is opened at one end, and a second installation hole is opened at both ends of the fixing plate. It is characterized in that: the unloading instrument is in the shape of a pincer, which includes a first rod body and a The second rod body, the first rod body and the second rod body have a first end on the same side and a second end on the same side, the first ends of the first rod body and the second rod body are formed with The second end of the first rod body is formed with a first boss that fits and engages with the first installation hole, and the second end of the second rod body is formed with a protrusion that is engaged with the second installation hole. Cooperate with the snap-fitted second boss. 2 . The unloading instrument for Nuss surgical support frame according to claim 1 , characterized in that: the length of the first protrusion is 2.85±0.05mm, and the diameter of the first protrusion is 3.85±0.05mm. 3 . The unloading instrument for Nuss surgery support frame according to claim 1 , characterized in that: the length of the second protrusion is 3.35±0.05mm, and the diameter of the second protrusion is 5.75±0.05mm. 4. The unloading instrument of the Nuss surgical support frame according to any one of claims 1 to 3, characterized in that: when the first rod body and the second rod body are rotated to close together, the first boss to The linear distance of the second protrusion is 12mm-18mm. 5. the unloading instrument of Nuss operation support frame according to claim 1, is characterized in that: described first body of rod and second body of rod all have the straight bar section and the oblique bar section that are connected near its second end, The first protrusion is formed on the straight section of the first rod body, the second protrusion is formed on the straight section of the second rod body, the oblique section of the first rod body and the second The oblique rod sections of the rod body all extend toward the rotational connection between the first rod body and the second rod body. 6. The unloading apparatus of the Nuss surgical support frame according to claim 5, wherein the angle between the connected straight bar section and the inclined bar section is 150° to 160°. 7. The unloading apparatus of the Nuss surgical support frame according to claim 5, wherein the lengths of the straight section of the first rod body and the straight section of the second rod body are both 11 mm to 15 mm. 8 . The unloading apparatus of the Nuss surgical support frame according to claim 5 , wherein the lengths of the oblique segment of the first rod body and the oblique rod segment of the second rod body are both 15 mm to 19 mm. 9. The unloading apparatus of the Nuss surgical support frame according to claim 5, characterized in that: the rod diameter of each said straight rod section and the rod diameter of each said inclined rod section are 7mm ~ 7.5mm. 10. the unloading apparatus of Nuss operation bracing frame according to claim 5, is characterized in that: the total length of setting described first rod body and the total length of second rod body are a, the straight rod of described first rod body section plus the total length of the oblique rod section and the straight rod section of the second rod body plus the total length of the oblique rod section are 1/6 to 1/5 of a.