Rotary cutting device and rotary cutting system

Abstract

The utility model provides a rotary cutting device and a rotary cutting system, and belongs to the technical field of medical instruments, and the rotary cutting device comprises a sheathing canal and an operating handle connected to the near end of the sheathing canal; a rotary cutting opening is formed in the far end of the sheathing canal; an adsorption mechanism is arranged in the sheath tube, a rotary cutting tool bit corresponding to the rotary cutting opening is arranged in the sheath tube, the rotary cutting tool bit is rotatably installed in the sheath tube, a puncture fixing needle is further arranged in the sheath tube, the puncture fixing needle is located in the sheath tube and corresponds to the rotary cutting opening, and the puncture fixing needle is used for being inserted into tissue entering the rotary cutting opening so as to fix the tissue. According to the utility model, the tissue to be cut is sucked into the sheath tube by spinning the incision, the puncture fixing needle moves along the axis direction of the sheath tube to gradually puncture and enter the tissue to be cut, the tissue to be cut is fixed, and the tissue to be cut entering the rotary incision can be cut off by rotating the rotary cutting tool bit. Cutting stability of to-be-cut tissue can be guaranteed, operation precision is improved, the operation success rate is guaranteed, and operation risks are reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a rotary cutting device and rotary cutting system. Background Technology

[0002] Thyroid cancer is a malignant tumor originating from the follicular epithelium or follicular epithelial cells of the thyroid gland. In recent years, the incidence of thyroid cancer has increased rapidly worldwide. In urban areas of my country, thyroid cancer ranks fourth among all malignant tumors in women, and is increasing at a rate of 20% annually. Most patients with thyroid nodules are asymptomatic and are usually discovered during physical examinations through thyroid palpation and neck ultrasound. Most thyroid nodules are benign, with malignant tumors accounting for approximately 5%-10%.

[0003] Existing abnormal tissues such as tumors or cysts within the thyroid gland are typically removed using radiofrequency ablation, laser ablation, or microwave ablation. However, this approach often results in incomplete removal of abnormal tissue, potentially leading to recurrence. After ablation surgery, it takes time for residual nodules to shrink and disappear within the body, causing psychological distress for patients regarding potential tumor metastasis. Furthermore, the ablation zone often appears disorganized on ultrasound, making it easy for inexperienced ultrasound technicians to misdiagnose it as a malignant nodule.

[0004] In existing treatment options, cutting devices can be used to remove abnormal tissues such as tumors or cysts in the thyroid gland. However, once these cutting devices are inserted into the patient's body, the abnormal tissues are often unstable, resulting in low precision in the cutting process. Utility Model Content

[0005] This utility model provides a rotary cutting device and a rotary cutting system to solve the defects of cutting devices in the prior art.

[0006] This utility model provides a rotary cutting device, comprising: a sheath and an operating handle connected to the proximal end of the sheath; a rotary cutting port is provided at the distal end of the sheath; an adsorption mechanism is provided inside the sheath, and a rotary cutting head is provided inside the sheath corresponding to the rotary cutting port. The adsorption mechanism is used to draw at least a portion of the tissue to be cut into the rotary cutting port, and the rotary cutting head is rotatably mounted in the sheath. The portion of the tissue to be cut that has entered the rotary cutting port is removed by rotating the rotary cutting head. A puncture and fixation needle is also provided inside the sheath, located inside the sheath and corresponding to the rotary cutting port. The puncture and fixation needle can move linearly along the axial direction of the sheath and is used to insert into the tissue that has entered the rotary cutting port to fix the tissue.

[0007] According to the rotary cutting device provided by this utility model, the adsorption mechanism further includes a negative pressure tube and a drive button; the drive button is movably installed on the operating handle; one end of the negative pressure tube is connected to the drive button and communicates with an external negative pressure device, and the other end of the negative pressure tube is connected to the puncture and fixation needle; the negative pressure tube has a negative pressure hole on the side wall near the end of the puncture and fixation needle.

[0008] According to the rotary cutting device provided by this utility model, a negative pressure hole is provided on the side wall of the puncture and fixing needle.

[0009] According to the present invention, a rotary cutting device is provided with a puncture head on the distal side of the sheath. The rotary cutting head can move linearly relative to the sheath along the axial direction of the sheath. The puncture head extends out of the distal end of the sheath and can retract into the sheath.

[0010] According to the present invention, a rotary cutting device is provided with a protective cap at the distal end of the sheath tube. The protective cap covers the distal opening of the sheath tube, the surface of the protective cap is arc-shaped and the connection between the protective cap and the outer wall of the sheath tube is smoothly transitioned; the protective cap has a puncture hole matching the puncture head, and the puncture head can extend out of the sheath tube through the puncture hole.

[0011] According to the present invention, a rotary cutting device is provided in which the piercing head and the rotary cutting head are integrally arranged.

[0012] According to the present invention, a rotary cutting device is provided, wherein the rotary cutting head is connected to a drive tube away from the puncture head, and the drive tube extends to the operating handle; a drive mechanism is provided inside the operating handle, and the drive mechanism is connected to the drive tube to drive the drive tube to rotate about the axis of the sheath tube as the rotation center.

[0013] According to the present invention, a rotary cutting device is provided, wherein the driving mechanism includes a damping motor, the damping motor is connected to a damping sensor, and the damping sensor is used to detect the rotational damping of the rotary cutting head driven by the damping motor.

[0014] According to the present invention, a rotary cutting device is provided, wherein the rotary cutting head includes two rotary cutting arc blades, the two rotary cutting arc blades are respectively located on opposite sides of the rotary cutting opening; the two rotary cutting arc blades are configured to rotate in a direction that is closer to or farther from each other; and the side of the two rotary cutting arc blades facing each other has a cutting edge.

[0015] This utility model also provides a rotary cutting system, including: a negative pressure device and the rotary cutting device described in any one of the above, wherein the negative pressure device is connected to the adsorption mechanism, and the negative pressure device is used to provide negative pressure attraction to enable the adsorption mechanism to draw at least part of the tissue to be cut into the rotary cutting port.

[0016] The rotary cutting device provided by this invention draws the tissue to be cut into a sheath through a rotating incision. A puncture and fixation needle then moves along the axis of the sheath to gradually puncture and penetrate the tissue, thus fixing it in place. The rotating cutting head then removes the tissue from the incision. Therefore, the puncture and fixation needle helps to stabilize the tissue during cutting, ensuring cutting stability, improving surgical precision, increasing the success rate, and reducing surgical risks. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is one of the structural schematic diagrams of the rotary cutting device provided by this utility model;

[0019] Figure 2 yes Figure 1 A magnified view of a portion of region II;

[0020] Figure 3 This is an axial sectional view of the rotary cutting device provided by this utility model;

[0021] Figure 4 yes Figure 3 A magnified view of a portion of region III;

[0022] Figure 5 yes Figure 3 A magnified view of a portion of region IV;

[0023] Figure 6 This is the second structural schematic diagram of the rotary cutting device method provided by this utility model;

[0024] Figure 7 yes Figure 1 A three-dimensional structural schematic diagram of the rotary cutting device shown;

[0025] Figure 8 yes Figure 7 A magnified view of a portion of the V-region;

[0026] Figure 9 yes Figure 7 A partial exploded view of region V in the middle.

[0027] Figure label:

[0028] 10. Rotary cutting device; 101. Rotary cutting nozzle;

[0029] 110. Sheath; 111. Protective cap;

[0030] 120. Operating handle; 121. Sheath knob; 122. Rotary knob; 123. Connector wire;

[0031] 130. Rotary cutting head; 1301. Rotary cutting arc blade; 1302. Tube body; 131. Rotary cutting tube; 132. Cutting hole; 1321. Cutting blade; 133. Drive mechanism; 134. Drive tube; 1341. Gear component; 135. Piercing head;

[0032] 140. Adsorption mechanism; 141. Negative pressure tube; 1411. Negative pressure hole; 142. Drive button;

[0033] 150. Puncture fixation needle. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" indicate the orientation or positional relationship, which is usually based on Figure 1The orientation and position of the rotary cutting device when it is normally placed are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0038] This utility model provides a rotary cutting device, see [link]. Figure 1 , Figure 1 This is a schematic diagram of an embodiment of a rotary cutting device provided in this application. The rotary cutting device 10 includes: a sheath 110 and an operating handle 120 connected to the proximal end of the sheath 110; a rotary cutting port 101 is provided at the distal end of the sheath 110; an adsorption mechanism is provided inside the sheath 110, and a rotary cutting head 130 is provided inside the sheath 110 corresponding to the rotary cutting port 101. The adsorption mechanism is configured to draw at least a portion of the tissue to be cut into the rotary cutting port 101, and the rotary cutting head 130 is configured to be rotatable. The device is installed in the sheath 110 and the portion of the tissue to be cut that enters the rotary cutting opening 101 is removed by rotating the rotary cutting head 130. The sheath 110 is also provided with a puncture and fixation needle 150. The puncture and fixation needle 150 is located in the sheath 110 and is positioned corresponding to the rotary cutting opening 101. The puncture and fixation needle 150 is configured to move linearly along the axial direction of the sheath 110 so that the puncture and fixation needle 150 is inserted into the tissue entering the rotary cutting opening 101 to fix the tissue.

[0039] Therefore, in this embodiment, after the tissue to be cut through the spin-cut incision 101 is drawn into the sheath 110, the puncture and fixation needle 150 can gradually puncture and enter the tissue to be cut by moving along the axis of the sheath 110, thereby fixing the tissue to be cut. Then, the rotation of the rotary cutting head 130 can remove the tissue to be cut from the spin-cut incision 101. Therefore, by using the puncture and fixation needle 150 to fix the tissue to be cut, the cutting stability of the tissue to be cut can be ensured, the surgical precision can be improved, the success rate of the surgery can be ensured, and the surgical risk can be reduced.

[0040] Furthermore, in this embodiment, the adsorption mechanism also includes a negative pressure tube 141 and a drive button 142; the drive button 142 is movably mounted on the operating handle 120; wherein, the rotary cutting head 130 includes a rotary cutting tube 131 and a cutting hole 132 located on the side wall of the rotary cutting tube 131, the cutting hole 132 is provided corresponding to the rotary cutting opening 101, wherein the side wall of the cutting hole 132 has a cutting blade 1321 to facilitate tissue cutting.

[0041] One end of the negative pressure tube 141 is connected to the drive button 142 and communicates with an external negative pressure device, while the other end is connected to the puncture and fixation needle 150. A negative pressure hole 1411 is provided on the side wall of the negative pressure tube 141 near the end of the puncture and fixation needle 150.

[0042] Therefore, in this embodiment, the puncture and fixation needle 150 can be fixedly installed on the negative pressure tube 141, which makes the entire rotary cutting device 10 simple and compact in structure. In addition, after the puncture and fixation needle 150 punctures into the tissue to be cut, after the tissue cutting is completed, the puncture and fixation needle 150 can also help fix the cut tissue, making it easier to remove the excised tissue.

[0043] Optionally, in some alternative embodiments, the puncture fixation needle 150 may be connected to the negative pressure tube 141, and a negative pressure hole may also be opened on the side wall of the puncture fixation needle 150 to fix the excised tissue.

[0044] In addition, after the tissue cutting is completed, the puncture fixation needle 150 can also move in the opposite direction, thereby moving a portion of the excised tissue into the sheath 110 to prevent the excised tissue from falling off during the removal process at the distal end of the sheath 110.

[0045] Please refer to further information. Figures 3-5 .

[0046] In this embodiment, the rotary cutting head 130 is further provided with a 135 on the distal side of the sheath 110. The rotary cutting head 130 is configured to move linearly relative to the sheath 110 along the axial direction of the sheath 110, so as to drive the puncture head 135 to extend out of the distal end of the sheath 110 and be able to retract into the sheath 110.

[0047] Therefore, in this embodiment, by extending the puncture head 135 beyond the distal end of the sheath 110 and exposing it, the puncture head 135 can be inserted into the patient's body to form a surgical channel. This allows the distal end of the sheath 110 to easily enter the body along the surgical channel and reach the location of the tissue to be removed. This approach eliminates the need for additional incisions, facilitating rapid and efficient surgery.

[0048] Optionally, a sheath knob 121 is provided on the operating handle 120. The knob 121 is rotatably mounted on the operating handle 120. The proximal end of the sheath 110 is screwed to the sheath knob 121. By rotating the sheath knob 121, the sheath 110 can move linearly along the axial direction. Specifically, by rotating the sheath knob 121 clockwise or counterclockwise, the sheath 110 can be moved to the point where the puncture head 135 extends out of the distal end of the sheath 110 or the puncture head 135 is retracted into the sheath 110.

[0049] A protective cap 111 is provided at the distal end of the sheath 110. The protective cap 111 covers the distal opening of the sheath 110. The surface of the protective cap 111 is arc-shaped and the connection between the protective cap 111 and the outer wall of the sheath 110 is smooth. The protective cap 111 has a puncture hole that matches the puncture head 135. The puncture head 135 is configured to extend out of the sheath 110 through the puncture hole.

[0050] In this scheme, tissue puncture can be performed by extending the puncture head 135 out of the sheath 110; when the distal end of the sheath 110 enters the corresponding position of the tissue to be cut in the body, the puncture head 135 can be returned to the sheath 110, thereby avoiding unnecessary tissue damage caused by vibration during the cutting process.

[0051] In this embodiment, the puncture head 135 and the rotary cutting head 130 are integrally formed. The rotary cutting head 130 can be a high-frequency electrosurgical unit. By setting the rotation speed of the rotary cutting head 130, the tissue to be cut can be cut and electrocoagulated simultaneously. That is, after the rotary cutting head 130 completes the rotational cutting, the wound can also be hemostatically removed, which can further improve the safety of the operation.

[0052] Furthermore, a connector wire 123 is connected to the tail end of the operating handle 120. The connector wire 123 is electrically connected to the rotary cutting head 130. The connector in the connector wire 123 can be electrically connected to an external high-frequency electrical signal output device, so that the high-frequency electrical signal output by the high-frequency electrical signal output device can be transmitted to the rotary cutting head 130 to realize electric cutting.

[0053] In this embodiment, the rotary cutting head 130 is connected to a drive tube 134 away from the piercing head 135, and the drive tube 134 extends to the operating handle 120. A rotary knob 122 can also be provided on the operating handle 120. The rotary knob 122 is rotatably mounted on the operating handle 120, and the operating handle 120 is connected to the drive tube 134. By rotating the rotary knob 122, the drive tube 134 can be rotated, thereby realizing the rotary cutting of the rotary cutting head 130. A gear component 1341 can be provided on the surface of the drive tube 134, and the gear component 1341 can mesh with the drive tube 134.

[0054] It should be noted that the sheath 110 is sleeved on the drive tube 134, and the drive tube 134 can be sleeved on the negative pressure tube 141. The rotary cutting tube 131 and the drive tube 134 can be integrally formed or they can be formed separately and then connected. The puncture and fixation needle 150 can be located inside the rotary cutting tube 131.

[0055] Please see Figure 6 . Figure 6 yes Figure 3 A schematic diagram of another embodiment of the rotary cutting device is shown.

[0056] In this embodiment, a drive mechanism 133 is also provided inside the operating handle 120. The drive mechanism 133 is connected to the drive tube 134 to drive the drive tube 134 to rotate around the axis of the sheath tube 110. The drive mechanism 133 may include a damping motor, which is connected to a damping sensor (not shown in the figure). The damping sensor is used to detect the rotational damping of the rotary cutting head 130 driven by the damping motor. Therefore, the rotational damping detected by the damping sensor can detect the cutting difficulty and adaptively adjust the driving force output by the damping motor.

[0057] Please see Figures 7-9 , Figure 7 yes Figure 1 A three-dimensional structural schematic diagram of another embodiment of the rotary cutting device shown; Figure 8 yes Figure 7 A magnified view of a portion of the rotary cutting device in region V; Figure 9 yes Figure 7 The exploded view of a portion of region V after the sheath is removed by the rotary cutting device shown.

[0058] In this embodiment, the rotary cutting head 130 includes two rotary cutting arc blades 1301, which are located on opposite sides of the rotary cutting opening 101. The two rotary cutting arc blades 1301 are configured to rotate in directions that are closer to or further away from each other. Each rotary cutting arc blade 1301 has a cutting edge on its side facing each other. The two rotary cutting arc blades 1301 can also rotate to complete the cutting process through the cooperation of a drive motor and gear assembly. In this design, the cutting edges of the two rotary cutting arc blades 1301 form a cutting motion similar to that of scissors.

[0059] The two rotary cutting blades 1301 are respectively connected to the two sleeved tubes 1302. By driving the two tubes 1302 to rotate, the two rotary cutting blades 1301 can rotate toward or away from each other to achieve the cutting action.

[0060] Furthermore, based on the same inventive concept, this application also provides a rotary cutting system. The rotary cutting system includes a negative pressure device and a rotary cutting device 10 as described in the preceding embodiments. The negative pressure device is connected to an adsorption mechanism and is used to provide negative pressure suction to allow the adsorption mechanism to draw at least a portion of the tissue to be cut into the rotary cutting opening.

[0061] When the rotary cutting head 130 of the rotary cutting device 10 is electrically operated, the rotary cutting system may also include a control device. The control device can provide power to the rotary cutting device 10 and can also send high-frequency electrical signals to the rotary cutting head 130 to realize high-frequency electric knife cutting.

[0062] In summary, this application provides a rotary cutting device and a rotary cutting system. The rotary cutting device of this application draws the tissue to be cut into a sheath through a rotary incision. A puncture and fixation needle moves along the axis of the sheath to gradually puncture and penetrate the tissue, thereby fixing it in place. Then, the rotation of the rotary cutting head removes the tissue that has entered the incision. Therefore, by using the puncture and fixation needle to fix the tissue, the cutting stability of the tissue can be ensured, surgical precision can be improved, the success rate of the surgery can be increased, and the surgical risk can be reduced.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rotary cutting device, characterized in that, include: A sheath and an operating handle connected to the proximal end of the sheath; The distal end of the sheath is provided with a rotary cutting port; an adsorption mechanism is provided inside the sheath, and a rotary cutting head is provided inside the sheath corresponding to the rotary cutting port. The adsorption mechanism is used to draw at least part of the tissue to be cut into the rotary cutting port, and the rotary cutting head is rotatably installed in the sheath. The portion of the tissue to be cut that has entered the rotary cutting port is removed by rotating the rotary cutting head. The sheath is further provided with a puncture and fixation needle, which is located inside the sheath and corresponds to the rotary incision. The puncture and fixation needle can move linearly along the axial direction of the sheath. The puncture and fixation needle is used to insert into the tissue that enters the rotary incision to fix the tissue.

2. The rotary cutting device according to claim 1, characterized in that, The adsorption mechanism also includes a negative pressure tube and a drive button; the drive button is movably mounted on the operating handle; one end of the negative pressure tube is connected to the drive button and communicates with an external negative pressure device, and the other end of the negative pressure tube is connected to the puncture and fixation needle; the negative pressure tube has a negative pressure hole on the side wall near the end of the puncture and fixation needle.

3. The rotary cutting device according to claim 2, characterized in that, The puncture fixation needle has a negative pressure hole on its side wall.

4. The rotary cutting device according to claim 3, characterized in that, The rotary cutting head is also provided with a puncture head on the distal side of the sheath. The rotary cutting head can move linearly relative to the sheath along the axial direction of the sheath. The puncture head extends out of the distal end of the sheath and can retract into the sheath.

5. The rotary cutting device according to claim 4, characterized in that, The distal end of the sheath is provided with a protective cap, which covers the distal opening of the sheath. The surface of the protective cap is arc-shaped and the connection between the protective cap and the outer wall of the sheath is smoothly transitioned. The protective cap has a puncture hole that matches the puncture head, through which the puncture head can extend out of the sheath.

6. The rotary cutting device according to claim 4, characterized in that, The piercing head and the rotary cutting head are integrally formed.

7. The rotary cutting device according to claim 4, characterized in that, The rotary cutting head is connected to a drive tube away from the puncture head, and the drive tube extends to the operating handle; the operating handle is provided with a drive mechanism, which is connected to the drive tube to drive the drive tube to rotate about the axis of the sheath tube as the rotation center.

8. The rotary cutting device according to claim 7, characterized in that, The drive mechanism includes a damping motor, which is connected to a damping sensor. The damping sensor is used to detect the rotational damping of the rotary cutting head driven by the damping motor.

9. The rotary cutting device according to claim 1, characterized in that, The rotary cutting head includes two rotary cutting blades, which are located on opposite sides of the rotary cutting opening. The two rotary cutting blades are configured to rotate in a direction that is closer to or farther from each other. The two rotary cutting blades have cutting edges on the side facing each other.

10. A rotary cutting system, characterized in that, The rotary cutting system includes a negative pressure device and a rotary cutting device as described in any one of claims 1-9, wherein the negative pressure device is connected to the adsorption mechanism, and the negative pressure device is used to provide negative pressure attraction to enable the adsorption mechanism to draw at least part of the tissue to be cut into the rotary cutting port.

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