Thigh quadriceps tendon retractor

Abstract

The application discloses a quadriceps tendon taking device and belongs to the technical field of medical devices. The quadriceps tendon taking device comprises a tendon taking column, a cavity is integrally formed in the inside of the tendon taking column, a limiting cavity is fixedly connected to the left side of the tendon taking column, a clamping cavity is fixedly connected to the left side of the limiting cavity, a cutting cavity is clamped and connected to the inside of the clamping cavity, a tendon taking opening is formed in the right side of the outside wall of the tendon taking column, and a rotary cutter head is fixedly connected to the right end of the tendon taking column. The quadriceps tendon taking device provides a precise and stable operation environment for tendon taking surgery through the cooperative design of multiple components. The limiting block in the limiting cavity and the limiting clamping groove of the fixing cavity are precisely matched, unnecessary displacement of the fixing cavity in the horizontal direction and other directions is effectively limited, the cutting cavity and the cutting arc-shaped cutter are ensured to be always in the accurate working position, the risk of incorrect tendon cutting caused by the position deviation of the components is greatly reduced, and the accuracy of the tendon taking cutting action is ensured. The elastic clamping block in the clamping cavity is tightly clamped with the fixing cavity by using the restoring force generated by the elastic deformation when the fixing cavity is inserted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a quadriceps tendon harvester. BACKGROUND

[0002] At present, in the operation of knee cruciate ligament reconstruction, the ratio of using quadriceps tendon as a graft is increasing. With the continuous development of medical technology, the requirements for tendon harvesting instruments are also increasing. The traditional tendon harvesting method often relies on relatively simple surgical instruments, such as ordinary surgical knives, scissors, etc. These tools have many limitations in the operation process. The traditional instrument is difficult to accurately control the depth, angle and range of cutting. Since human tendons cannot be regenerated, once there is a cutting error in the tendon harvesting process, such as excessive cutting or deviation of the cutting position, it is easy to cause permanent damage to the tendon function, which seriously affects the postoperative recovery of the patient's limb function. The traditional tendon harvesting method is more tricky when dealing with tendon and surrounding tissue adhesion, and lacks a structure specially designed for efficient separation of adhesion tissue while ensuring tendon integrity. Due to the special anatomy of the quadriceps tendon, the use of the common hamstring tendon harvesting device to cut the quadriceps tendon is not suitable, which will cause excessive tissue damage, cause complications in the donor area and unnecessary waste. In addition, during the operation, for some auxiliary operations such as marking and fixing the tendon for subsequent processing, there is a lack of integrated functional design, and additional tools often need to be prepared, which not only increases the operation time, but also may introduce new risks due to the inconvenience of tool switching during the operation.

[0003] The traditional instrument also has deficiencies in overall structural stability. During long and complex tendon harvesting operations, instrument parts are prone to looseness, displacement and other situations, further affecting the accuracy and safety of the operation. Therefore, it is an urgent need for the development of orthopedic surgical instruments to develop a quadriceps tendon harvesting device that is specifically designed for quadriceps tendon harvesting, has precise cutting, effective tissue processing, multifunctional assistance, and high stability structure. SUMMARY

[0004] The purpose of the present application is to provide an operation that is simple and has low learning cost. The present application also has the purpose of providing good storage and auxiliary functions.

[0005] Technical scheme: The quadriceps tendon harvesting device comprises a tendon harvesting column, an internal cavity is integrally formed in the tendon harvesting column, a limiting cavity is fixedly connected to the left side of the tendon harvesting column, a clamping cavity is fixedly connected to the left side of the limiting cavity, a cutting cavity is clamped and connected in the clamping cavity, a tendon harvesting port is formed in the right side of the outer wall of the tendon harvesting column, and a rotating knife head is fixedly connected to the right end of the tendon harvesting column.

[0006] Further, the cutting cavity comprises a fixing cavity, the right side of the fixing cavity is fixedly connected with a cutting column, the right side of the cutting column is fixedly connected with a cutting arc-shaped knife, and the fixing cavity is clamped and connected with the clamping cavity.

[0007] Further, the left side of the fixing cavity is fixedly connected with a clamping cavity, and the outer side wall of the clamping cavity is provided with a clamping groove.

[0008] Further, the left side of the fixing cavity is fixedly connected with a wire storage cavity, the outer side wall of the wire storage cavity is provided with a wire winding groove, and the outer side wall of the wire winding groove is provided with a disinfection fine wire.

[0009] Further, the left side of the wire storage cavity is provided with a needle storage groove, the inside of the needle storage groove is clamped and connected with a disinfection lead needle, the left side of the needle storage groove is clamped and connected with a plug groove block, and the inside of the needle storage groove is provided with a needle clamping opening on the right side.

[0010] Further, the inside of the limiting cavity is fixedly connected with a limiting block in a symmetrical manner, the outer side wall of the fixing cavity is provided with a limiting clamping groove in a symmetrical manner, and the inside of the clamping cavity is fixedly connected with a ring-shaped elastic clamping block.

[0011] Further, the outer side wall of the wire storage cavity is provided with a layer of soft sleeve.

[0012] Further, the outer side wall of the cavity is fixedly connected with an anti-skid block in a symmetrical manner.

[0013] Beneficial effects: the tendon taking device provides a precise and stable operation environment for tendon taking surgery through the cooperative design of multiple components. The limiting block in the limiting cavity and the limiting clamping groove of the fixing cavity are precisely matched, which effectively limits unnecessary displacement of the fixing cavity in the horizontal and other directions, ensures that the cutting cavity and the cutting arc-shaped knife are always in the accurate working position, greatly reduces the risk of incorrect tendon cutting caused by the position deviation of the components, and guarantees the accuracy of the tendon cutting action. The elastic clamping block in the clamping cavity tightly clamps the fixing cavity by using the restoring force generated by elastic deformation when the fixing cavity is inserted, which further enhances the connection stability. This high stability and precision are crucial for the human tendon which cannot be regenerated, can effectively avoid permanent damage to the tendon function caused by improper surgical operation, and thus lays a solid foundation for good recovery of the limb movement function of the patient after surgery.

[0014] The wire storage cavity and its related structure brings great convenience and efficiency to the tendon harvesting operation. The wire groove stores the sterilized fine wire, and its appropriate width and depth prevent the fine wire from falling out and facilitate the use. In the operation, it can be used for temporary marking, binding and fixing of the cut tendon, which helps to maintain the shape and position of the tendon and facilitates the subsequent operation steps. The needle storage groove stably stores the sterilized lead needle, and the needle storage groove enhances the fixing effect through the needle clamping port, cooperates with the blocking block to prevent external pollution and accidental sliding of the needle body, and ensures the cleanliness and availability of the surgical tool. When the fine wire needs to pass through the tissue, the sterilized lead needle can perfectly cooperate with the sterilized fine wire to quickly and accurately complete the threading action, reduce the operation time and operation difficulty, improve the efficiency and quality of the whole tendon harvesting operation, and also provide strong support for the fine operation in the operation process. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the overall structure schematic diagram of the present application;

[0016] Figure 2 is the overall structure schematic diagram of the cut-off cavity of the present application;

[0017] Figure 3 is the cross-sectional structure schematic diagram of the tendon harvesting column of the present application;

[0018] Figure 4 is the cross-sectional structure schematic diagram of the needle storage groove of the present application.

[0019] In the figure: 1, tendon harvesting column; 2, cavity; 3, limiting cavity; 4, clamping cavity; 5, cut-off cavity; 6, tendon harvesting port; 7, rotary cutter head; 8, fixed cavity; 9, cut-off column; 10, cut-off arc-shaped cutter; 11, clamping cavity; 12, clamping groove; 13, wire storage cavity; 14, wire groove; 15, sterilized fine wire; 16, needle storage groove; 17, sterilized lead needle; 18, needle clamping port; 19, limiting block; 20, limiting clamping groove; 21, elastic clamping block; 22, soft sleeve; 23, anti-skid block; 24, blocking block. DETAILED DESCRIPTION

[0020] In order to make the technical scheme of the present application clearer, the present application will be further described in detail in combination with the drawings and specific embodiments. EMBODIMENT

[0021] As Figures 1-4As shown, the quadriceps tendon is provided with a tendon extractor, the inside of the tendon extraction column 1 is integrally formed with a cavity 2, the left side of the tendon extraction column 1 is fixedly connected with a limiting cavity 3, the left side of the limiting cavity 3 is fixedly connected with a clamping cavity 4, the inside of the clamping cavity 4 is clamped and connected with a cutting cavity 5, the right side of the outer wall of the tendon extraction column 1 is provided with a tendon extraction port 6, the right end of the tendon extraction column 1 is fixedly connected with a rotating knife head 7, the cutting cavity 5 includes a fixed cavity 8, the right side of the fixed cavity 8 is fixedly connected with a cutting column 9, the right side of the cutting column 9 is fixedly connected with a cutting arc-shaped knife 10, the fixed cavity 8 is clamped and connected with the clamping cavity 4, the left side of the fixed cavity 8 is fixedly connected with a clamping cavity 11, the outer wall of the clamping cavity 11 is provided with a clamping groove 12;

[0022] Before operation, separate the limiting cavity 3 from the cutting cavity 5, cut the tendon to the specified size, then use a needle and thread to guide the tendon into the cavity 2, and lead the thread out of the clamping cavity 4. At this time, external force is applied, and the force is transmitted to the rotating knife head 7 through the tendon extraction column 1. Because the tendon extraction column 1 provides stable support, the rotating knife head 7 can perform cutting action in a stable posture. This design enables the cutting force to be concentrated on the blade part, effectively cutting the quadriceps tendon. For example, just like cutting an object with a knife that has a firm handle, the handle cutting column ensures the stability of the cutting of the knife cutting arc-shaped knife. It can rotate and cut into the tissue around the tendon, and can handle some more complex tissue adhesion situations. For example, when the tendon is adhered to the surrounding fascia and other tissues, the rotating knife head 7 can separate and preliminarily cut, improving the efficiency and accuracy of cutting. It should be noted that once the human tendon is damaged and cut, it cannot regenerate itself, so precise cutting operation is particularly important. Any improper cutting may cause permanent damage to the tendon function, affecting the recovery of the patient's limb movement function. The tendon extraction port 6 on the right side of the outer wall of the tendon extraction column 1 provides a special channel for the extraction of the tendon. When the tendon is taken out, the tendon can be easily taken out of the tendon extractor through the tendon extraction port 6. The size and position of the tendon extraction port 6 are carefully designed, and the size is just right for the cut tendon to pass through smoothly. It will not jam the tendon because the opening is too small, nor will it lack protection for the surrounding tissue because the opening is too large. For example, by using a needle and thread to lead the tendon out of the tendon extraction port 6, then clamping the cutting cavity 5 into the inside of the tendon extraction column 1, the tendon is directly cut by the cutting arc-shaped knife 10, the limiting cavity 3 and the clamping cavity 4 play a stabilizing role in the tendon extraction process, and play a role in stabilizing the structure of the entire instrument. The cooperation of each part prevents tissue tearing, and the close cooperation between each part of the entire tendon extractor also helps to prevent tissue tearing. The rotating knife head 7 when separating the tissue, which is very important for protecting the integrity of the tissue at the surgical site and the postoperative recovery of the patient, because if the tissue around the tendon is severely damaged, it may indirectly affect the nutrient supply of the tendon, and the tendon cannot regenerate. A series of adverse effects may hinder the good recovery of the patient's limb function.

[0023] In the embodiment, the left side of the fixed cavity 8 is fixedly connected with a wire storage cavity 13, the outer side wall of the wire storage cavity 13 is provided with a winding groove 14, the outer side wall of the winding groove 14 is provided with a disinfection fine wire 15, the left side of the wire storage cavity 13 is provided with a needle storage groove 16, the inside of the needle storage groove 16 is clampedly connected with a disinfection lead needle 17, the left side of the needle storage groove 16 is clampedly connected with a plug groove block 24, and the inside right side of the needle storage groove 16 is provided with a needle clamping opening 18.

[0024] The storage wire cavity 13 is fixedly connected to the left side of the fixed cavity 8, which serves as a unique functional area of the entire tendon extractor and expands the accessory functions of the instrument. The connection between the storage wire cavity 13 and the fixed cavity 8 is stable and reliable, and such stability ensures that the storage wire cavity 13 will not be loose or displaced during various operations of the tendon extractor and movement and storage, thereby ensuring that the relevant items stored inside can be in a stable state and ready for use at any time. The wire winding groove 14 is opened on the outer side wall of the storage wire cavity 13 and has a carefully designed shape and size. The wire winding groove 14 is in the form of an elongated recess, the width of which is just suitable for the diameter of the sterilized fine wire 15, and the depth can ensure that the fine wire will not easily come out after being wound, and will not be too deep to affect the subsequent operation of using the fine wire. The sterilized fine wire 15 is orderly wound on the wire winding groove 14, and through such a winding method, not only can the fine wire be neatly stored to avoid entanglement and difficulty in use, but also when the fine wire is needed, the operator can conveniently and smoothly pull out the corresponding length of the sterilized fine wire 15 from the wire winding groove 14. The sterilized fine wire 15 itself is strictly sterilized, and the material thereof is selected from medical materials with certain strength and flexibility, such as medical silk thread. It has an important use in the tendon extraction operation, such as being used for temporarily marking and binding the cut tendon. The design of the needle clamping port 18 is ingenious, which can clamp the corresponding part of the sterilized lead needle 17, further enhance the fixing effect of the needle in the needle storage groove 16, prevent the needle from accidentally slipping out of the needle storage groove 16 in the case of moving the tendon extractor, and avoid causing damage to the needle body or safety hazards to the surrounding personnel and instruments. The sterilized lead needle 17, as a surgical auxiliary tool, is also strictly sterilized. It can be used in cooperation with the sterilized fine wire 15, for example, when the sterilized fine wire 15 needs to be passed through the tendon or other tissue for marking, fixing, etc., the sterilized lead needle 17 can smoothly pass through the corresponding tissue with the sterilized fine wire 15. The blocking groove block 24 is connected with the left side of the needle storage groove 16, which is like a “safety door” of the needle storage groove 16. The blocking groove block 24 can tightly block the left opening of the needle storage groove 16, on the one hand, to prevent dust, impurities, etc. from entering the needle storage groove 16 to pollute the sterilized lead needle 17, maintain the cleanliness of the needle, and ensure that it meets the requirements of sterile operation; on the other hand, it further enhances the fixing effect of the sterilized lead needle 17 in the needle storage groove 16, so that the needle can be stably stored in the needle storage groove 16 when not in use, ready for use at any time and can guarantee the safety and effectiveness in use.

[0025] In the embodiment, the inside of the limiting cavity 3 is fixedly connected to the limiting block 19, the outer side wall of the fixed cavity 8 is symmetrically provided with the limiting clamping groove 20, and the inside of the clamping cavity 4 is fixedly connected to a circle of elastic clamping blocks 21;

[0026] The limiting blocks 19 are symmetrically fixed and connected inside the limiting cavity 3. They are cuboids in shape, with moderate size, which can effectively limit and will not occupy too much space inside the limiting cavity 3.

[0027] During the entire operation of the tendon extractor, the limiting blocks 19 play a key role in positioning and limiting the moving direction. When assembled with the fixed cavity 8, the limiting blocks 19 will interact with the limiting clamping grooves 20 opened on the outer side wall of the fixed cavity 8. The accuracy and stability of the connection between the various components of the instrument are extremely high during the tendon extraction operation. The limiting blocks 19 can accurately limit the position of the fixed cavity 8 in the limiting cavity 3 by embedding the limiting clamping grooves 20, preventing it from deviating in the horizontal direction or other unnecessary directions, thereby ensuring that the components such as the cutting cavity 5 and the cutting arc-shaped knife 10 connected thereto can always be in the accurate working position, ensuring the accuracy of the tendon cutting action, avoiding incorrect cutting of the tendon due to the deviation of the component position, and affecting the recovery of the patient's tendon function after the operation.

[0028] The limiting clamping grooves 20 are symmetrically opened on the outer side wall of the fixed cavity 8, which are adapted in shape to the limiting blocks 19, generally presenting a long strip-shaped recessed form, with a depth and width that can just accommodate the embedding of the limiting blocks 19. The assembly and disassembly operation between the fixed cavity 8 and the limiting cavity 3 is smoother, which is convenient for the maintenance, cleaning and component replacement of the tendon extractor. During the assembly process of the tendon extractor, the elastic clamping block 21 plays an important role in clamping and fixing. When the fixed cavity 8 is inserted into the clamping cavity 4, the elastic clamping block 21 will be extruded and slightly expanded around due to its elastic properties. When the fixed cavity 8 reaches the appropriate position, the elastic clamping block 21 will tightly clamp the fixed cavity 8 by relying on its elastic restoring force, further enhancing the connection stability between the fixed cavity 8 and the clamping cavity 4.

[0029] In this embodiment, the outer side wall of the wire storage cavity 13 is provided with a layer of soft sleeve 22;

[0030] The material of the soft sleeve 22 usually has the characteristics of softness, skin-friendliness and good flexibility. For example, it is made of medical silica gel or soft medical rubber and other materials. Medical silica gel material has the advantages of non-toxic, odorless and good biocompatibility, and will not cause irritation or allergic reaction to human tissues.

[0031] In this embodiment, the outer side wall of the cavity 2 is symmetrically fixed and connected with the anti-skid block 23;

[0032] When the tendon is taken out by the tendon taking device, the doctor often needs to hold the tendon taking device and perform various fine actions, such as rotating, pushing and pulling, etc. The existence of the anti-skid block 23 can well meet this requirement. The anti-skid block 23 increases the friction between the tendon taking device and the hand of the user, so that the doctor can hold the tendon taking device more stably, and effectively prevent the tendon taking device from accidentally falling in the hand.

[0033] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A tendon harvester for the quadriceps tendon, comprising a harvesting column (1), characterized in that: The inside of the tendon taking column (1) is integrally formed with a cavity (2), the left side of the tendon taking column (1) is fixedly connected with a limiting cavity (3), the left side of the limiting cavity (3) is fixedly connected with a clamping cavity (4), the inside of the clamping cavity (4) is clamped and connected with a cutting cavity (5), the right side of the outer wall of the tendon taking column (1) is provided with a tendon taking port (6), the right end of the tendon taking column (1) is fixedly connected with a rotary tool bit (7), the cutting cavity (5) comprises a fixed cavity (8), the right side of the fixed cavity (8) is fixedly connected with a cutting column (9), the right side of the cutting column (9) is fixedly connected with a cutting arc-shaped knife (10), the fixed cavity (8) is clamped and connected with the clamping cavity (4), the left side of the fixed cavity (8) is fixedly connected with a wire storage cavity (13), the outer wall of the wire storage cavity (13) is provided with a wire winding groove (14), the outer wall of the wire winding groove (14) is wound with a disinfecting fine wire (15), the left side of the wire storage cavity (13) is provided with a needle storage groove (16), the inside of the needle storage groove (16) is clamped and connected with a disinfecting lead needle (17), the left side of the needle storage groove (16) is clamped and connected with a groove block (24), the inside of the needle storage groove (16) is provided with a needle clamping port (18), the inside of the limiting cavity (3) is fixedly connected with a limiting block (19) in a symmetrical manner, the outer wall of the fixed cavity (8) is provided with a limiting clamping groove (20) in a symmetrical manner, and the inside of the clamping cavity (4) is fixedly connected with a ring-shaped elastic clamping block (21).

2. The hamstring tendon retractor of claim 1, wherein: The outer wall of the wire storage cavity (13) is wound with a layer of soft sleeve (22).

3. The hamstring tendon retractor of claim 1, wherein: The left side of the fixed cavity (8) is fixedly connected with a clamping cavity (11), and the outer wall of the clamping cavity (11) is provided with a clamping groove (12).

4. The hamstring tendon retractor of claim 1, wherein: The outer wall of the cavity (2) is fixedly connected with an anti-skid block (23) in a symmetrical manner.

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