High-speed bending planer tool and system thereof

Abstract

The invention relates to a high-speed bending planer tool and a system thereof, and belongs to the technical field of orthopedic medical instruments, and the high-speed bending planer tool comprises a holding part which is configured to facilitate an operator to operate and control the high-speed bending planer tool; the insertion part extends from the handle, the insertion part comprises an inner tube and an outer tube, the inner tube is movably arranged in the outer tube, and the insertion part is provided with a bent section; the outer pipe comprises a bent section and a linear section, and the bent section is a hard bent pipe or an adjustable soft bent pipe; the inner pipe comprises a bent section and a linear section, the bent section is a soft bent pipe, a braid layer is arranged outside the soft bent pipe, the inner pipe is connected with the torque transmission element / assembly, and the torque transmission element / assembly is connected and used for driving the inner pipe to rotate; the cutting part comprises an outer cutting tool bit and an inner cutting tool bit, the outer cutting tool bit is arranged at the far end of the outer tube, and the inner cutting tool bit is arranged at the far end of the inner tube. According to the high-speed bending planing tool, the angle of the planing tool can be flexibly adjusted in a narrow and complex operation environment.

Description

Technical Field

[0001] The invention belongs to the technical field of orthopedic medical instruments, and in particular relates to a high-speed curved planer and a system thereof. Background Art

[0002] In the existing medical device field, especially in orthopedic surgery, planers are commonly used as a tool for cutting and shaping soft tissues. However, with the increasing complexity and precision requirements of medical surgery, traditional planers have gradually exposed many shortcomings.

[0003] First, the traditional planer has a fixed structure and the blade head is divided into a straight rod, which makes it very difficult for doctors to operate when the surgical site is in a difficult-to-reach position during surgery. Especially when it is necessary to deal with complex anatomical structures, traditional planers often cannot meet surgical needs, causing doctors to have to build a larger channel or even use an orthopedic grinding head to remove healthy bones to complete the operation. This not only reduces surgical efficiency, but also greatly increases surgical costs.

[0004] Currently, there are some planers with bending functions, but the bending range of these planers is limited and they cannot meet the multi-angle and multi-directional operation requirements; the existing planer design still cannot meet clinical needs.

[0005] In order to solve the above problems, a high-speed curved planer is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a high-speed curved planer and a system thereof, which improves the operation space and operation comfort of the planer.

[0007] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] A high-speed curved planer, comprising:

[0009] A grip portion configured as a handheld portion that facilitates an operator to operate and control the high-speed bending planer;

[0010] An insertion portion extending from the handle, the insertion portion comprising an inner tube and an outer tube, the inner tube being movably disposed in the outer tube, and the insertion portion being provided with a bending section;

[0011] The outer tube comprises a curved section and a straight section, wherein the curved section is a hard curved tube or an adjustable soft curved tube;

[0012] The inner tube comprises a curved section and a straight section, wherein the curved section is a soft curved tube, a braided layer is arranged outside the soft curved tube, and the inner tube is connected to a torque transmission element / assembly, wherein the torque transmission element / assembly is connected to drive the inner tube to rotate;

[0013] The cutting part comprises an outer cutting head and an inner cutting head, wherein the outer cutting head is arranged at the distal end of the outer tube, and the inner cutting head is arranged at the distal end of the inner tube.

[0014] On the other hand, a high-speed curved planer system includes the above-mentioned high-speed curved planer, and further includes a power source for driving the planer, wherein the power source is connected to the inner tube through a torque transfer element / assembly in the gripping part to provide rotational power for the inner tube.

[0015] Beneficial effects:

[0016] The high-speed curved planer has a soft and hard curved structure, which allows the angle of the planer to be flexibly adjusted in narrow and complex surgical environments, thereby enhancing the flexibility and adaptability of the operation, especially in hard-to-reach bone tissue areas, and can effectively improve the accuracy of the operation.

[0017] Through the design of soft adjustable curved tube, the cutting range and angle can be precisely controlled as needed during surgery to avoid large-scale cutting of healthy tissue, thereby effectively reducing damage to surrounding bones and soft tissues.

[0018] Due to the bendable insertion portion, the planer can pass smoothly through complex bone structures or narrow surgical channels, reducing dependence on larger surgical channels and thereby improving the utilization efficiency of the operating space.

[0019] The braided layer structure on the inner tube can improve the transmission stability of the hose and obtain higher speed and torque.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is an overall structural diagram of the embodiment of the present disclosure;

[0023] Figure 2 This is a diagram of the overall structure of the double bend according to the embodiment of the present disclosure;

[0024] Figure 3 This is a structural diagram of the outer tube of an embodiment of the present disclosure;

[0025] Figure 4 This is a diagram of the inner tube structure of an embodiment of the present disclosure;

[0026] Figure 5 This is a structural diagram of the front end of the inner tube in an embodiment of the present disclosure;

[0027] Figure 6 This is a structural diagram of a cutter head outside the embodiment of the present disclosure;

[0028] Figure 7 This is a diagram of the winding layer structure of an embodiment of the present disclosure;

[0029] Figure 8 This is a diagram of the matching structure of the cutter head in the embodiment of the present disclosure;

[0030] Fig. 9 This is a structural diagram of a traction rope according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0032] It should be noted that the "distal end" and "far side" mentioned in the present invention can be understood as the end away from the operator, and the "proximal end" and "near side" can be understood as the end close to the operator;

[0033] In one embodiment, Figure 1-Figure 2 As shown, the structure of a high-speed curved planer provided by the present application includes a gripping portion 5, an inserting portion 1 and a cutting portion;

[0034] The inserting portion 1 comprises an outer tube 11 and an inner tube 12 . The inner tube 12 is movably installed in the outer tube 11 . The outer tube 11 is fixedly arranged on the gripping portion 5 . A bending section is arranged on the inserting portion 1 .

[0035] The cutting part includes an outer cutting head 113 and an inner cutting head 123, wherein the outer cutting head 113 is arranged at the distal end of the outer tube 11, and the inner cutting head 123 is arranged at the distal end of the inner tube 12;

[0036] In order to facilitate the user to operate the high-speed bending planer, a gripping portion 5 is provided for the user to grasp. The gripping portion 5 not only provides a position for the user to hold and operate the high-speed bending planer, but also has a structure inside which provides rotational power for the inner tube 12 .

[0037] like Figure 2As shown, the straight sections of the outer tube 11 and the inner tube 12 are stainless steel tubes, and the curved section of the outer tube 11 can be a hard curved tube or an adjustable soft curved tube; the inner tube is connected to a torque transmission element / component, and the torque transmission element / component is used to drive the inner tube to rotate; the torque transmission element / component can be driven by a motor.

[0038] A hard curved tube is used with an integrated structure with the outer tube 11, and the curved section is set by bending it. The advantage of such a setting is that the setting has high strength and strong support, which can ensure the strength of the curved section of the outer tube. At the same time, the structure is simple and easy to process. However, the setting method cannot be adjusted, which will make the surgical channel larger. At the same time, it is impossible to perform real-time adjustment under the endoscope to adapt to operations in different positions.

[0039] The bending section is set by using an adjustable soft curved tube, and the adjustable soft curved tube can be connected to other parts of the outer tube by crimping or welding. The advantage of such a setting is that the setting can be adjusted in real time under the endoscope to adapt to operations at different positions.

[0040] In some embodiments, the adjustable soft elbow structure can be as follows Figure 3 As shown, the outer soft curved tube 112 has a circular tubular structure, and spring grooves 1121 that are evenly arranged on both sides are staggered with each other. The spring grooves 1121 are V-shaped and open outward. The spring grooves 1121 are arranged on both sides of the outer soft curved tube 112 in the direction in which the bending is required; the soft curved tube is made of spring steel to ensure elasticity and rigidity; further, a cutter head positioning groove 1122 for installing and positioning the external cutting head 113 is provided at the far end of the soft curved tube 112, and a cutter head positioning boss 1131 that cooperates with it is provided on the external cutting head 113.

[0041] A traction rope threading hole 1123 is provided on the outer soft curved tube 112, and a traction rope 2 is provided in the traction rope threading hole 1123. The distal end of the traction rope 2 is fixed on the outer cutting head 113 or the distal end of the outer soft curved tube 112, and the proximal end of the traction rope 2 is arranged on the adjustment mechanism of the gripping part 5. Such a design can complete the angle adjustment under the mirror.

[0042] The part of the adjusting mechanism connected to the proximal end of the traction rope 2 can perform traction and tensioning work on the traction rope 2. The adjusting mechanism can be driven proximally by sliding, rotating, etc., and the control method of the existing snake-bone adjusting handle can be adopted.

[0043] The inner tube 12 includes a hose section and a hard tube section. The hose section is provided on the insertion portion 1 and has a bending section. The hose section and the hard tube section are connected by crimping or welding. The hose section can be a spring, a cutting hose, etc. Based on torque transmission and high-speed stability, this application proposes a hose such as Figure 4As shown, in some embodiments, the inner tube 12 is provided with a hard tube section 121, an inner hose section 122, and an inner cutting head 123 in sequence from the proximal end to the distal end; the inner hose section 122 includes a plurality of inner hose intermediate components 1221 and a distal joint 1223 and a proximal joint 1222 respectively arranged at both ends of the inner hose section 122, the inner hose intermediate components 1221 are connected end to end, and the inner hose intermediate component 1221 is in a circular ring shape as a whole.

[0044] The connection method of the inner hose intermediate part 1221 is as follows Figure 7 As shown, the distal end of the inner hose middle part 1221 is provided with two circumferentially distributed distal connection grooves 1229, and the distal connection grooves 1229 are provided with distal fixing bosses 1228. The distal end of the distal fixing boss 1228 is circular and the connection part thereof with the inner hose middle part 1221 is a trapezoid that gradually increases in size from the distal end to the proximal end.

[0045] The proximal end of the inner hose middle part 1221 is provided with a proximal connection boss 1225 that cooperates with the distal connection groove 1229. The proximal connection boss 1225 is arranged in the distal connection groove 1229. The proximal connection boss 1225 and the distal connection groove 1229 are provided with an installation gap for making way when bending. The distal connection groove 1229 is provided with a proximal connection groove 1226 that cooperates with the distal fixing boss 1228. The distal fixing boss 1228 is arranged in the proximal connection groove 1226; the proximal connection boss 1225 is provided with an external anti-dropping boss 1227;

[0046] The distal connector 1223 and the proximal connector 1222 are connected to the inner hose middle component 1221 via the same connection structure as the inner hose middle component 1221; the inner hose middle component 1221, the distal connector 1223, and the proximal connector 1222 are close to each other on both sides of the connection structure, so as to ensure that no interference occurs when the inner hose section 122 is bent.

[0047] In some embodiments, a winding layer is provided on the outer side of the inner hose section 122;

[0048] Furthermore, the winding layer is composed of multiple stainless steel braided flexible shafts 3, and the winding direction is determined by the rotation direction of the inner tube 12. The winding layer is tightened as the inner tube 12 rotates, so that the torque can be transmitted through the winding layer while ensuring the stability of the inner hose section 122. Figure 7 As shown, a plurality of flexible shaft installation grooves 1230 can be provided on the outside of the inner hose section 122 during the setting; such a setting can ensure the stability of the flexible shaft installation of the stainless steel braided flexible shaft 3, and the stainless steel braided flexible shaft 3 adopts a structure of multiple winding braiding of a coreless shaft, and the spiral directions of the two adjacent layers of braiding are opposite.

[0049] In some embodiments, Figure 4 As shown, the winding layer can be a plurality of strands of stainless steel soft wire tightly wound, and the winding direction is determined by the rotation direction of the inner tube 12. It is tightened as the inner tube 12 rotates, thereby ensuring the firmness and stability of the components of the inner hose section 122. At the same time, the outermost winding layer can play a role in transmitting torque.

[0050] In some embodiments, the inner cutting head 123 is provided with a plurality of inner raised cutting edges 1231 for cutting, and the outer cutting head 113 is provided with a plurality of outer raised cutting edges 1231 for cutting, so as to avoid channel blockage caused by cutting too much soft tissue.

[0051] Since the outer soft curved tube 112 needs greater rigidity to ensure its stability during operation, it is difficult to ensure a safety margin under such tension by using a single traditional snake-bone controlled traction rope. When multiple traction ropes are used for operation at the same time, due to the consistency of the force direction, the existing adjustment handle is driven by a more or less rigid moving part and it is difficult to ensure that each traction rope is uniformly stressed. In some embodiments, two traction rope threading holes 1123 are provided on the inner side of the outer soft curved tube 112 when it is bent during operation.

[0052] The distal end of the outer cutting blade 113 or the outer soft curved tube 112 is provided with a U-shaped through hole for installing the traction rope 2. The through hole is provided with two outlets at both ends, respectively, and penetrates the surface to form a through hole structure with a U-shaped path. After the traction rope 2 passes through the U-shaped through hole, both ends of the traction rope 2 pass through the traction rope threading holes 1123 in turn and are connected to the adjustment mechanism of the gripping portion 5. In this way, the traction rope 2 can slide in the U-shaped through hole to ensure that the traction rope 2 on both sides is evenly stressed.

[0053] In some specific embodiments, the U-shaped through hole is provided on the outer cutting blade 113, such as Figure 6 As shown, a U-shaped suture installation hole 1132 is provided on the outer cutting blade head 113, and threading holes 1133 are provided at both ends of the U-shaped suture installation hole 1132. Such a design can facilitate installation and can make the force point close to the far end for easy adjustment.

[0054] like Fig. 9 As shown, the traction rope 2 can be divided into a movable section 21 arranged in the U-shaped through hole, the fixed ends 25 arranged at the two sections of the traction rope 2 are connected to the adjustment mechanism of the gripping portion 5, the threading section 22 at the proximal end of the movable section 21 is arranged in the threading hole 1133, and a connecting section 23 is provided between the threading section 22 and the fixed end 25. A protective sleeve 24 is provided outside the connecting section 23, and the protective sleeve 24 is provided on the outside of the outer tube 11. Furthermore, a groove for installing the protective sleeve 24 is provided on the outside of the outer tube 11. The protective sleeve 24 is a stainless steel tube, and the traction rope 2 is a high-strength metal wire, which can be a stainless steel wire or a nickel-titanium wire.

[0055] Since the strength of the soft shaft is lower than that of the rigid shaft, in order to avoid the inner cutter head from falling off and breaking, and more importantly, the length and position of the hose need to be coordinated with the bending angle and radius of the outer tube so as to avoid failure and breakage of the soft elbow 112 during high-speed rotation. Based on this, in some embodiments, such as Figure 8 As shown, a fixing buckle installation groove 1135 is provided on the outer cutting blade head 113, and an annular fixing groove 1233 is provided on the proximal portion 1232 of the inner cutting blade head 123. A fixing buckle 4 is provided in the fixing buckle installation groove 1135. The fixing buckle 4 includes an arc-shaped main body end 41, and both sides of the arc-shaped main body end 41 are provided with fixing pin ends 42 that cooperate with the annular fixing groove 1233. At the same time, such a design can avoid the fracture and failure of the soft bend pipe 112, which is the stability of the blade head and ensures that no secondary damage is caused. At the same time, it can be determined that the soft bend pipe 112 and the bending position are fixed to ensure the best combination.

[0056] In one embodiment, if Figure 2 As shown, the high-speed curved planer adopts a double-bend structure design, which provides a more flexible operating angle and range. The outer tube 11 and the inner tube 12 are both provided with a corresponding double-bend structure;

[0057] The curved section of the outer tube 11 can be a combination of a fixed curved section and an adjustable soft curved section. The fixed curved section is located at one end close to the gripping portion to ensure that the planer has sufficient rigidity and support at the basic angle. The adjustable soft curved section is located at the distal end, allowing the operator to adjust it through the handle during the operation to achieve multi-angle and multi-directional surgical operations; the design of the inner tube 12 matches the outer tube 11, and its curved section is composed of a soft hose section.

[0058] Furthermore, we can Figure 2 As shown, the outer tube of the distal bend 100 is made of a flexible spring hose, and the proximal bend 200 is made of a rigid tube by bending.

[0059] The high-speed bending planer in the above embodiment is also equipped with a traction adjustment mechanism for controlling the bending angle of the adjustable distal bend 100. The mechanism is connected to the traction rope 2 through a rotating or sliding adjustment device on the grip 5. One end of the traction rope 2 is fixed to the distal end of the outer cutting head 113 or the outer soft bending tube 112, and the other end is connected to the adjustment device. The traction rope passes through the bending section of the outer tube through the U-shaped through hole 1123 to achieve uniform force during double bending operation.

[0060] The high-speed curved planer with double bending structure can adapt to complex surgical environments, especially in narrow or difficult-to-access surgical areas, under the operation of double bending of the inner and outer tubes, which significantly improves the flexibility and accuracy of the operation. The combination of the double bending structure and the adjustment mechanism makes the planer system more stable and flexible during the operation. At the same time, the adjustable bending angle under the microscope at the distal end can increase the operating space and comfort, reduce the doctor's dependence on the surgical channel, and avoid damage to healthy bone tissue, improving the efficiency and safety of the operation.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0062] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. High-speed curved planer, characterized in that: include: A grip portion configured as a handheld portion that facilitates an operator to operate and control the high-speed bending planer; An insertion portion extending from the handle, the insertion portion comprising an inner tube and an outer tube, the inner tube being movably disposed in the outer tube, and the insertion portion being provided with a bending section; The outer tube comprises a curved section and a straight section, wherein the curved section is a hard curved tube or an adjustable soft curved tube; The inner tube comprises a curved section and a straight section, wherein the curved section is a soft curved tube, a braided layer is arranged outside the soft curved tube, and the inner tube is connected to a torque transmission element / assembly, wherein the torque transmission element / assembly is connected to drive the inner tube to rotate; A cutting part, comprising an outer cutting head and an inner cutting head, wherein the outer cutting head is arranged at the distal end of the outer tube, and the inner cutting head is arranged at the distal end of the inner tube; A fixing buckle installation groove is provided on the outer cutting blade head, and an annular fixing groove is provided at the proximal end of the inner cutting blade head. A fixing buckle is arranged in the fixing buckle installation groove. The fixing buckle includes an arc-shaped main body end, and fixing pin ends cooperating with the annular fixing groove are arranged on both sides of the arc-shaped main body end.

2. The high-speed curved planer according to claim 1, characterized in that: The inserting portion is provided with two curved sections in opposite directions.

3. The high-speed curved planer according to claim 1 or 2, characterized in that: The curved section of the outer tube close to the cutting portion is an adjustable soft curved tube; The structure of the soft bending pipe is a circular tube, and mutually staggered spring grooves are evenly arranged on both sides. The spring grooves are V-shaped and open outward. The spring grooves are arranged on both sides of the bending direction of the outer soft bending pipe. A traction rope threading hole is provided on the outer soft curved tube, a traction rope is provided in the traction rope threading hole, the distal end of the traction rope is fixed to the distal end of the outer cutting blade or the outer soft curved tube, and the proximal end of the traction rope is connected to the adjustment mechanism of the gripping part.

4. The high-speed curved planer according to claim 1 or 2, characterized in that: The curved section of the inner tube is an inner hose section, which includes a plurality of inner hose intermediate components and a distal joint and a proximal joint respectively arranged at both ends of the inner hose section; The inner hose middle part is in the shape of a ring, connected end to end, and the distal end of the inner hose middle part is provided with two distal connection grooves distributed in a circumference, and a distal fixing boss is provided in the distal connection groove, and the distal end of the distal fixing boss is circular, and the connection part with the inner hose middle part is a trapezoid that gradually increases from the distal end to the proximal end; The proximal end of the inner hose intermediate component is provided with a proximal connection boss that cooperates with the distal connection groove, the proximal connection boss is arranged in the distal connection groove, and an installation gap is provided with the distal connection groove for making way when bending, the distal connection groove is provided with a proximal connection groove that cooperates with the distal fixing boss, the distal fixing boss is arranged in the proximal connection groove, and the proximal connection boss is provided with an external anti-slip boss; The distal end connector and the proximal end connector are connected to the inner hose middle part through the same connection structure as the inner hose middle part; The inner hose middle component, the distal end connector and the proximal end connector are each provided with a bending clearance groove on one side where they are close to each other.

5. The high-speed curved planer according to claim 1 or 2, characterized in that: The winding layer is composed of a plurality of stainless steel braided flexible shafts, and the winding direction is determined according to the rotation direction of the inner tube, and the winding layer is tightened as the inner tube rotates.

6. The high-speed curved planer according to claim 1 or 2, characterized in that: The winding layer can be a plurality of stainless steel soft wires tightly wound together, and the winding direction thereof is determined according to the rotation direction of the inner tube, and the winding layer is tightened as the inner tube rotates.

7. The high-speed curved planer according to claim 1 or 2, characterized in that: The inner cutting blade head is provided with a plurality of inner protruding cutting edges for cutting, and the outer cutting blade head is provided with a plurality of outer protruding cutting edges for cutting.

8. The high-speed curved planer according to claim 1 or 2, characterized in that: The distal end of the outer cutting blade or the outer soft curved tube is provided with a U-shaped through hole for installing a traction rope; The through hole is provided with two outlets at both ends respectively, penetrating the surface to form a through hole structure with a U-shaped path. After the traction rope passes through the U-shaped through hole, the two ends pass through the traction rope threading holes in turn and are connected to the adjustment mechanism of the gripping part.

9. The high-speed curved planer according to claim 1 or 2, characterized in that: The traction rope is provided with a protective sleeve outside, and the protective sleeve is arranged on the outside of the outer tube.

10. A high-speed curved planer system, characterized in that: It comprises a high-speed curved planer according to any one of claims 1-9, and further comprises a power source for driving the planer, wherein the power source is connected to the inner tube through a torque transfer element / assembly in the gripping portion to provide rotational power for the inner tube.

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