A medical device knife device for rib cartilage extraction surgery

Abstract

The present invention relates to the field of medical devices, and particularly to a medical device knife device for rib cartilage resection surgery. The present invention provides a medical device knife device for rib cartilage resection surgery, which includes a base tube. The distal end of the base tube includes a rib receiving groove. A bone cutting blade body that cooperates with the rib receiving groove and a driving slider for driving the bone cutting blade body to reciprocate relative to the rib receiving groove are provided in the inner cavity of the base tube. A holding portion and a driving portion for driving the driving slider to move are provided at the proximal end of the base tube. A measuring block receiving track with an extending direction matching that of the base tube is further provided on the side wall of the base tube. One end of the measuring block receiving track close to the rib receiving groove includes a measuring block abduction window, and a measuring device is provided in the measuring block receiving track. The present invention performs rib cartilage resection and measurement through a rib receiving groove, a holding portion, a measuring device, etc., enabling a doctor to safely and effectively quantitatively resect rib cartilage during the operation.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to a medical device knife device for rib cartilage harvesting surgery. Background Art

[0002] There are 24 rib cartilages in the human body, which are rich in sources and have strong regenerative ability. They are important donor areas for plastic repair surgeries. In rhinoplasty, ear reconstruction, and craniofacial deformity surgeries, autologous rib cartilage is a very important repair material, with advantages that cannot be compared by artificial materials. However, currently, harvesting rib cartilage requires an approach through an incision in the chest wall skin, resulting in scars in the donor area. Some of these scars are prone to hyperplasia and even form keloids, seriously affecting aesthetics, making patients very distressed and deterring beauty seekers, severely restricting the clinical application of autologous rib cartilage.

[0003] The navel hole is the only scar left on the body after a person is born and leaves the mother's body. Its position is very concealed, making it a natural concealed donor area incision. However, how to harvest rib cartilage that is 5 cm or even longer from a 1 - 2 cm navel hole incision? We thought of applying transumbilical single - port endoscopic technology to harvest rib cartilage and verified its feasibility in clinical practice, reducing the surgical scars on the chest wall skin. Currently, in rib cartilage harvesting surgery, generally a small section of the sixth, seventh, and eighth rib cartilages is taken, and the harvest is based on individual actual needs. However, in the current rib cartilage harvesting instruments, it is impossible to measure the rib cartilage part during the operation. In rib cartilage harvesting surgery, an internal ultrasonic scalpel or an external rongeur is required to harvest the rib cartilage. However, whether it is the internal ultrasonic scalpel or the external rongeur for clamping and cutting, the instrument is prone to slipping when operating on the rib cartilage. And beside the rib cartilage are important organs such as the liver. During the operation by the doctor, the instrument slipping easily leads to damage to soft tissues such as blood vessels and pleura around the rib cartilage. The damage to the pleura and blood vessels will cause internal bleeding, hemorrhagic shock, pneumothorax, hemothorax, etc., and in severe cases, it will even endanger the patient's life.

[0004] Therefore, how to solve the above - mentioned technical problems has become an urgent problem for those skilled in the art. Summary of the Invention

[0005] In view of the above - mentioned disadvantages of the prior art, the purpose of the present invention is to provide a medical device knife device for rib cartilage harvesting surgery to solve the problems in the prior art.

[0006] To achieve the above and other related objectives, the present invention provides a medical device knife for costal cartilage resection surgery, including a base tube. The distal end of the base tube includes a rib receiving groove, and the extending direction of the rib receiving groove is adapted to the inner cavity of the base tube. A bone cutting blade body adapted to the rib receiving groove and a driving slider for driving the bone cutting blade body to reciprocate relative to the rib receiving groove are provided in the inner cavity of the base tube. A holding portion and a driving portion for driving the driving slider to move are provided at the proximal end of the base tube. A measuring block receiving track with an extending direction adapted thereto is further provided on the side wall of the base tube. One end of the measuring block receiving track close to the rib receiving groove includes a measuring block abduction window. A measuring device is provided in the measuring block receiving track. From the distal end to the proximal end of the base tube, the measuring device sequentially includes a measuring block and a pushing slider. When the pushing slider moves towards the distal end of the measuring block receiving track, the measuring block can abduct in the measuring block abduction window and, after abduction, is adapted to the extending direction of the rib receiving groove. At least a part of the proximal end of the pushing slider is exposed outside the base tube.

[0007] In some embodiments of the present invention, the driving portion includes a driving handle rotatable along a rotating shaft and a reset member for driving the driving slider to reset. The driving handle is rotatably connected to the driving slider and at least partially exposed outside the base tube.

[0008] In some embodiments of the present invention, the moving direction of the driving handle is adapted to the holding portion.

[0009] In some embodiments of the present invention, the reset member includes a first reset member. The first reset member is located in the inner cavity of the base tube and is connected to the driving handle and / or the driving slider.

[0010] In some embodiments of the present invention, the reset member includes a second reset member. The second reset member is respectively connected to the driving handle and the holding portion and is located between them.

[0011] In some embodiments of the present invention, the base tube is cylindrical.

[0012] In some embodiments of the present invention, the length of the base tube is 300 mm to 500 mm, and the outer diameter is 5 mm to 15 mm.

[0013] In some embodiments of the present invention, the width of the rib receiving groove is 15 mm to 35 mm, and the depth is 4 mm to 10 mm.

[0014] In some embodiments of the present invention, the measuring device includes a first sub-measuring block, a second sub-measuring block, and a pushing slider that are sequentially hinged to each other. The distal end of the first sub-measuring block is hinged to the base tube. The shapes and sizes of the first sub-measuring block and the second sub-measuring block generally match and are adapted to the measuring block abduction window.

[0015] In some embodiments of the present invention, the angle between the extending direction of the rib receiving groove and the extending direction of the inner cavity of the base tube is 85 to 90°. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the overall structure of the medical device knife for rib cartilage cutting surgery provided by the present invention.

[0017] Figure 2 Shown is a schematic diagram of the overall structure of the medical device knife for rib cartilage cutting surgery provided by the present invention.

[0018] Figure 3 Shown is a schematic diagram of the sectional structure of the medical device knife for rib cartilage cutting surgery provided by the present invention.

[0019] Figure 4 Shown is a schematic diagram of the sectional structure of the medical device knife for rib cartilage cutting surgery provided by the present invention.

[0020] Figure 5 Shown is a schematic diagram of the partial structure of the measuring block of the medical device knife for rib cartilage cutting surgery provided by the present invention.

[0021] DESCRIPTION OF REFERENCE NUMERALS

[0022] 1 Base tube

[0023] 11 Rib receiving groove

[0024] 111 Scale

[0025] 12 Inner cavity

[0026] 13 Measuring block receiving track

[0027] 131 Measuring block abduction window

[0028] 2 Bone cutting blade

[0029] 3 Driving slider

[0030] 4 Holding part

[0031] 5 Driving part

[0032] 51 Driving handle

[0033] 511 Rotating shaft

[0034] 52 First resetting member

[0035] 53 Second resetting member

[0036] 6 Measuring device

[0037] 61 Measuring block

[0038] 611 First sub - measuring block

[0039] 612 Second sub - measuring block

[0040] 62 Pushing slider

[0041] 621 Exposed part of the slider

[0042] 622 Elastic member Detailed implementation manners

[0043] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0044] Please refer to Figures 1 to 5 Note that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that the technical content disclosed by the present invention can cover. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the scope for the implementation of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope within which the present invention can be implemented.

[0045] Refer to Figures 1 to 2, the present invention provides a medical device knife device for rib cartilage resection surgery, including a base tube 1. The distal end of the base tube 1 includes a rib receiving groove 11, and the extending direction of the rib receiving groove 11 is matched with the inner cavity 12 of the base tube 1. A bone cutting blade body 2 matched with the rib receiving groove 11 and a driving slider 3 for driving the bone cutting blade body 2 to reciprocate relative to the rib receiving groove 11 are arranged in the inner cavity 12 of the base tube 1. A holding part 4 and a driving part 5 for driving the driving slider 3 to move are arranged at the proximal end of the base tube 1. A measuring block receiving track 13 with a matching extending direction is further arranged on the side wall of the base tube 1. One end of the measuring block receiving track 13 close to the rib receiving groove 11 includes a measuring block abduction window 131. A measuring device 6 is arranged in the measuring block receiving track 13. From the distal end to the proximal end of the base tube 1, the measuring device 6 sequentially includes a measuring block 61 and a pushing slider 62. When the pushing slider 62 moves towards the distal end of the measuring block receiving track 13, the measuring block 61 can be abducted out of the measuring block abduction window 131 and, after abduction, is matched with the extending direction of the rib receiving groove 11. At least a part of the proximal end of the pushing slider 62 is exposed outside the base tube 1. When the medical device knife device provided by the present invention is used, a doctor can hold the holding part by hand, pass the front part of the base tube 1 of the medical device knife device into the abdomen through the navel through a laparoscope, and clamp the rib cartilage through the rib receiving groove 11, and press the holding part 4 and its corresponding driving part 5, so as to drive the driving slider 3 to eject the bone cutting blade body 2. The tip of the bone cutting blade body 2 can abut against the rib cartilage. The width of the rib cartilage is determined through the laparoscope and the scale. Then, by further pushing the pushing slider 62, the pushing slider 62 pushes the measuring block 61 to be abducted out of the measuring block abduction window 131, and the length of the rib cartilage is measured by the measuring block 61. During the operation, according to the measured length and width of the rib cartilage, the doctor cuts the required rib cartilage by squeezing the bone cutting blade body 2. During the whole bone taking process, the rib cartilage can be fully clamped through the rib receiving groove 11, and it is not easy to slip and damage soft tissues such as blood vessels and pleura around the rib cartilage, and the rib cartilage can be quantitatively cut according to the actual required rib cartilage of the patient, and the rib cartilage resection surgery can be accurately completed.

[0046] In the medical device knife device for harvesting costal cartilage provided by the present invention, the base tube 1 can generally be a tube body with a suitable extension length and shape. For example, the base tube 1 can generally be a cylindrical structure. For another example, in terms of its extension direction, its length can be 300 mm to 500 mm, 300 mm to 350 mm, 350 mm to 400 mm, 400 mm to 450 mm, or 450 mm to 500 mm, and the outer diameter can be 5 mm to 15 mm, 5 mm to 7 mm, 7 mm to 9 mm, 9 mm to 11 mm, 11 mm to 13 mm, or 13 mm to 15 mm. For another example, the base tube 1 can generally be provided with an opening at the distal end that cooperates with the rib receiving groove 11, and the proximal end can be closed. The position of the rib receiving groove 11 is generally located at the distal end of the base tube 1 (i.e., the end far from the holding portion 4, which is also the end that needs to be inserted into the human body during the operation). The rib receiving groove 11 is generally as close as possible to the distal end of the base tube 1, and its extension direction generally cooperates with the extension direction of the inner cavity of the base tube 1. For example, they are generally staggered and have a certain angle (for example, it can be about 85 to 90°), so that when the osteotomy blade body 2 in the inner cavity of the base tube 1 is pushed out of the inner cavity, the costal cartilage located in the rib receiving groove 11 can be cut appropriately. The extension direction of the inner cavity is generally basically the same as that of the base tube 1, and the shape generally needs to cooperate with the driving slider 3 and the osteotomy blade body 2, so as to ensure that the two can move reciprocally in the inner cavity smoothly. The size and dimensions of the rib receiving groove 11 generally need to cooperate with the size of the costal cartilage to be cut. For example, the width of the rib receiving groove 11 (i.e., the dimension in the extension direction of the base tube 1) can be 15 mm to 35 mm, 15 mm to 20 mm, 20 mm to 25 mm, 25 mm to 30 mm, or 30 mm to 35 mm, and the depth can be 4 mm to 10 mm, 4 mm to 6 mm, 6 mm to 8 mm, or 8 mm to 10 mm.

[0047] In the medical device knife device for harvesting costal cartilage provided by the present invention, the driving part 5 can include a driving handle 51 that can rotate along the rotating shaft 511 and a reset member for driving the driving slider 3 to reset, so that the driving slider 3 and the osteotomy blade body 2 can move reciprocally in the inner cavity of the base tube 1. The driving handle 51 can generally be rotatably connected to the driving slider 3 and at least partially exposed outside the base tube 1, so as to form a cooperation with the holding portion 4. The movement direction of the driving handle 51 generally cooperates with the holding portion 4.

[0048] In the medical device knife device for rib cartilage resection provided by the present invention, the reset member may include a first reset member 52 (for example, it may be a spring, etc.) and / or a second reset member 53 (for example, an elastic bracket, etc.). The first reset member 52 may be located in the inner cavity of the base tube 1. The first reset member 52 may be connected to the driving handle 51 and / or the driving slider 3, so that when the driving slider 3 is pushed towards the distal end, the driving slider 3 can be pulled back towards the proximal end. The second reset member 53 may be located between the driving handle 51 and the holding portion 4. The second reset member 53 may also be respectively connected to the driving handle 51 and the holding portion 4. After the driving handle 51 and the holding portion 4 move towards each other and drive the driving slider 3 to move towards the distal end of the base tube 1, the driving handle 51 and the holding portion 4 can return to their original positions, so that the driving slider 3 is pulled back towards the proximal end.

[0049] In the medical device knife device for rib cartilage resection provided by the present invention, the measuring device 6 may be located in the measuring block receiving track 13. The measuring device 6 may include a first sub-measuring block 611, a second sub-measuring block 612 and a pushing slider 62 that are sequentially hinged to each other. The distal end of the first sub-measuring block 611 may be hinged to the base tube 1. The shapes and sizes of the first sub-measuring block 611 and the second sub-measuring block 612 generally match and can cooperate with the measuring block abduction window 131 (for example, the length may be 15 mm to 40 mm, 15 mm to 20 mm, 20 mm to 25 mm, 25 mm to 30 mm, 30 mm to 35 mm, or 35 mm to 40 mm, and the outer diameter may be 4 mm to 12 mm, 4 mm to 6 mm, 6 mm to 8 mm, 8 mm to 10 mm, or 10 mm to 12 mm). When the pushing slider 62 moves towards the distal end, the first sub-measuring block 611 and the second sub-measuring block 612 can be abducted in the measuring block abduction window 131 and the side walls of the two can abut against each other. Thus, when the pushing slider 62 moves as close as possible to the distal end of the measuring block receiving track 13, the first sub-measuring block 611 and the second sub-measuring block 612 can be erected and fixed at a position consistent with the extending direction of the rib receiving groove 11. At least a part of the proximal end of the pushing slider 62 is exposed outside the base tube 1, so that a slider exposed portion 621 can be formed. Through the slider exposed portion 621, the pushing slider 62 can be pushed to drive the measuring block 61 to move in the measuring block receiving track 13. The pushing slider 62 may also include an elastic member 622 (for example, a spring, etc.). Along the extending direction of the pushing slider 62 and / or the measuring block receiving track 13, the elastic member 622 is generally a part of the pushing slider 62. The elastic member 622 generally needs to have appropriate elasticity so that the pushing slider 62 can be smoothly pushed out or pulled back.

[0050] The above-mentioned medical device knife device is mainly used for cutting costal cartilage during the costal cartilage resection operation. In the current costal cartilage resection operation, it is usually difficult to cut costal cartilage with a traditional costal cartilage knife, and it is easy to slip and damage surrounding organs such as the liver, and quantitative cutting cannot be achieved. To solve the above problems, the present invention cuts and measures costal cartilage through a rib receiving groove, a holding portion, a measuring device, etc., enabling a doctor to safely and effectively cut costal cartilage quantitatively during the operation.

[0051] In summary, the present invention effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0052] The above embodiments are only illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A medical device knife device for rib cartilage excision surgery, characterized in that, It includes a base tube (1), the distal end of the base tube (1) includes a rib receiving groove (11), and the angle between the extending direction of the rib receiving groove (11) and the extending direction of the inner cavity (12) of the base tube (1) is 85 to 90°. A bone cutting blade body (2) matching with the rib receiving groove (11) and a driving slider (3) for driving the bone cutting blade body (2) to reciprocate relative to the rib receiving groove (11) are arranged in the inner cavity (12) of the base tube (1). A holding part (4) and a driving part (5) for driving the driving slider (3) to move are arranged at the proximal end of the base tube (1). A measuring block receiving track (13) with a matching extending direction is further arranged on the side wall of the base tube (1). One end of the measuring block receiving track (13) close to the rib receiving groove (11) includes a measuring block abduction window (131). A measuring device (6) is arranged in the measuring block receiving track (13). From the distal end of the base tube (1) towards the proximal end, the measuring device (6) sequentially includes a measuring block (61) and a pushing slider (62). When the pushing slider (62) moves towards the distal end of the measuring block receiving track (13), the measuring block (61) abducts out of the measuring block abduction window (131) and, after abduction, is in the same extending direction as the rib receiving groove (11). At least a part of the proximal end of the pushing slider (62) is exposed outside the base tube (1). The measuring device (6) includes a first sub-measuring block (611), a second sub-measuring block (612) and a pushing slider (62) which are sequentially hinged to each other. The distal end of the first sub-measuring block (611) is hinged to the base tube (1). The shapes and sizes of the first sub-measuring block (611) and the second sub-measuring block (612) match and are matched with the measuring block abduction window (131).

2. The medical device knife device for rib cartilage excision surgery according to claim 1, characterized in that, The driving part (5) includes a driving handle (51) rotatable along a rotating shaft and a resetting member for driving the driving slider (3) to reset. The driving handle (51) is rotatably connected to the driving slider (3) and at least partially exposed outside the base tube (1).

3. The medical device knife device for rib cartilage excision surgery according to claim 2, characterized in that, The moving direction of the driving handle (51) is matched with the holding part (4).

4. The medical device knife device for rib cartilage excision surgery according to claim 2, characterized in that, The resetting member includes a first resetting member (52). The first resetting member (52) is located in the inner cavity of the base tube (1), and the first resetting member (52) is connected to the driving handle (51) and / or the driving slider (3).

5. The medical device knife device for rib cartilage excision surgery according to claim 2, characterized in that, The resetting member includes a second resetting member (53). The second resetting member (53) is respectively connected to the driving handle (51) and the holding part (4) and is located between them.

6. The medical device knife device for rib cartilage excision surgery according to claim 1, characterized in that, The base tube (1) is cylindrical.

7. The medical device knife device for rib cartilage excision surgery according to claim 1, characterized in that, The length of the base tube (1) is 300 mm to 500 mm, and the outer diameter is 5 mm to 15 mm.

8. The medical device knife device for rib cartilage excision surgery according to claim 1, characterized in that, The width of the rib receiving groove (11) is 15 mm to 35 mm, and the depth is 4 mm to 10 mm.

Images