Ultrasonic cutter
By designing the inclined cutting section and the inner spoon-face suction port structure of the ultrasonic scalpel, the problem of bone debris affecting the cutting effect was solved, achieving efficient removal of bone debris and improving surgical efficiency and mechanical strength.
Patent Information
- Application Number
- CN202422909315.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Bone debris generated during ultrasonic cutting of bone surfaces can affect the cutting effect and reduce surgical efficiency.
An ultrasonic cutter was designed, including a cutter bar and a cutter head. The cutting part of the cutter head is set at an angle and has an outer spoon surface and an inner spoon surface. The inner spoon surface is concave and a hollow channel runs through the inner spoon surface to form a suction port. Bone debris is suctioned out through the hollow channel by negative pressure.
It improves surgical efficiency, ensures the mechanical strength of the cutting area, reduces operational difficulty, expands the surgical field exposure range, and improves the overall efficiency of the surgery.
Smart Images
Figure CN223930204U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field, concretely relates to an ultrasonic cutter. BACKGROUND
[0002] The ultrasonic cutter is a surgical instrument for breaking and removing biological soft tissue and hard tissue by cavitation effect and mechanical effect of ultrasonic vibration energy. It has been widely applied in the field of surgical operation such as tumor surgery and neurosurgery because of its good tissue selectivity, strong controllability and less bleeding.
[0003] A large amount of bone slag is produced when the bone surface is cut by the ultrasonic cutter, and the contact between the bone slag and the end of the ultrasonic cutter reduces the cutting effect and the operation efficiency. UTILITARY MODEL
[0004] Therefore, the utility model provides an ultrasonic cutter to solve the problem of bone slag affecting cutting effect and reducing operation efficiency when the bone surface is cut by the ultrasonic cutter.
[0005] The utility model provides an ultrasonic cutter, which comprises:
[0006] A cutter rod is provided with a hollow channel penetrating through the proximal end and the distal end;
[0007] A cutter head is connected with the distal end of the cutter rod and comprises a cutting part extending obliquely relative to the cutter rod, the cutting part has an outer spoon surface and an inner spoon surface, the outer spoon surface is a convex surface, the inner spoon surface is a concave surface, and the hollow channel extends to penetrate through the inner spoon surface to form an attraction port.
[0008] Optionally, the hollow channel extends along the central axis of the cutter rod, and the included angle between the extension direction of the cutting part and the central axis ranges from 5 degrees to 40 degrees.
[0009] Optionally, the inner spoon surface comprises a first inner spoon surface, and the attraction port penetrates through the first inner spoon surface; the first inner spoon surface is provided with a second inner spoon surface and a third inner spoon surface on opposite sides of the first inner spoon surface and in the shape of a concave surface, and the second inner spoon surface and the third inner spoon surface extend from the position close to the attraction port to the end close to the cutting part.
[0010] Optionally, the first inner spoon surface is provided with a blocking part, and the attraction port is located between the blocking part, the second inner spoon surface and the third inner spoon surface.
[0011] Optionally, the blocking part is a point-shaped protrusion, a ring-shaped protrusion or a convex rib.
[0012] Optionally, the cutting part comprises a cutting edge, and the inner spoon surface extends to be close to the cutting edge.
[0013] Optionally, taking the intersection of the arc surface where the first inner spoon surface is located and the central axis of the hollow channel as the base point, the line connecting the top of the cutting blade and the base point has a first angle with the central axis, the first angle ranging from 5 degrees to 40 degrees.
[0014] Optionally, the cutting part is provided with a plurality of cutting blades, a cutting groove is formed between two adjacent cutting blades, and a transition surface is provided between the cutting groove and the second inner spoon surface and / or the third inner spoon surface.
[0015] Optionally, the near end of the tool holder is provided with a clamping part, and the hollow channel passes through the clamping part.
[0016] Optionally, the blade includes an extension located between the cutting section and the blade holder, and one end of the inner spoon surface extends from the extension toward the distal end of the cutting section.
[0017] Beneficial effects:
[0018] The ultrasonic cutting tool provided by this utility model includes: a tool holder and a tool head.
[0019] The blade holder has a hollow channel extending through its proximal and distal ends. The blade head is connected to the distal end of the blade holder and includes a cutting section that extends at an angle relative to the blade holder. The cutting section has an outer spoon surface and an inner spoon surface. The outer spoon surface is convex, and the inner spoon surface is concave. The hollow channel extends through the inner spoon surface to form a suction port.
[0020] In use, medical staff can use the cutting section to cut the bone surface. The outer convex surface of the spoon conforms to the bone surface, making it easy for medical staff to scrape away bone. The inner concave surface facilitates the collection of bone fragments. Specifically, because the hollow channel runs through the inner spoon surface, when a negative pressure is applied to the suction port formed on the inner spoon surface, bone fragments on the bone surface can slide along the inner spoon surface and enter the hollow channel through the suction port until they are discharged from the other end of the blade through the hollow channel. This removes bone fragments from the bone surface, ensuring the cutting effect of the cutting section and improving surgical efficiency. Moreover, while providing suction space, the inner spoon surface also greatly ensures the mechanical strength of the cutting section.
[0021] In addition, because the cutting section is tilted relative to the blade holder, it makes it easier for medical staff to find the appropriate cutting and suction angles, resulting in a wider surgical field, reduced operational difficulty, and further improved surgical efficiency. Attached Figure Description
[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the structure of the ultrasonic cutter according to an embodiment of the present invention;
[0024] Figure 2 This is a cross-sectional structural diagram of the ultrasonic cutter according to an embodiment of the present invention;
[0025] Figure 3 This is a schematic diagram of the structure of the inner spoon surface in an embodiment of the present invention;
[0026] Figure 4 This is a cross-sectional structural diagram of the inner spoon surface according to an embodiment of the present utility model;
[0027] Figure 5 This is a schematic diagram of one embodiment of the blocking part of this utility model;
[0028] Figure 6 This is a schematic diagram of another embodiment of the blocking part of this utility model;
[0029] Figure 7 This is a schematic diagram of the transition surface in an embodiment of the present invention;
[0030] Figure 8 This is a reference diagram showing the usage state of the ultrasonic cutter according to an embodiment of the present invention.
[0031] Explanation of reference numerals in the attached figures:
[0032] 1. Blade head; 11. Cutting section; 111. Cutting blade; 101. Cutting groove; 112. Inner spoon surface; 113. Outer spoon surface; 114. First inner spoon surface; 115. Second inner spoon surface; 116. Third inner spoon surface; 117. Blocking section; 118. Transition surface; 12. Extension section; 2. Blade holder; 3. Clamping block; 4. Connector; 5. Hollow channel; 51. Connection port; 52. Suction port; 6. Bone tissue; 7. Bone fragments. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments 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.
[0034] like Figure 1 , Figure 2 and Figure 8 As shown, Figure 1 A schematic diagram of the structure of the ultrasonic cutter according to an embodiment of the present invention is shown. Figure 2 This diagram shows a cross-sectional view of the ultrasonic cutter according to an embodiment of the present invention, specifically illustrating the connection relationship between the hollow channel 5, the inner spoon surface 112, and the suction port 52. Figure 8 A reference diagram showing the usage status of the cutting section is provided.
[0035] This embodiment provides an ultrasonic cutting tool, including: a tool holder 2 and a tool head 1.
[0036] The tool holder 2 is provided with a hollow channel 5 that runs through the proximal and distal ends. The hollow channel 5 can be connected to a negative pressure structure, which is used to provide negative pressure to the hollow channel 5.
[0037] The blade head 1 is connected to the distal end of the blade shank 2 and includes a cutting portion 11 that extends obliquely relative to the blade shank 2. The cutting portion 11 has an outer spoon surface 113 and an inner spoon surface 112. The outer spoon surface 113 is convex and the inner spoon surface 112 is concave. The hollow channel 5 extends through the inner spoon surface 112 to form a suction port 52. When the hollow channel 5 has a negative pressure, the suction port 52 can attract bone fragments or other tissues near the inner spoon surface 112.
[0038] In use, medical staff can use the cutting section 11 to cut the bone surface. The outer spoon surface 113 is convex and can fit against the bone surface, making it easy for medical staff to scrape away bone. The inner spoon surface 112 is concave and can facilitate the collection of bone fragments. Specifically, since the hollow channel 5 runs through the inner spoon surface 112, when there is negative pressure in the suction port 52 formed on the inner spoon surface 112, bone fragments on the bone surface can slide along the inner spoon surface 112 and enter the hollow channel 5 through the suction port 52 until they are discharged from the other end of the hollow channel 5 located on the blade 2, thereby removing bone fragments from the bone surface, ensuring the cutting effect of the cutting section 11 and improving surgical efficiency. Moreover, the inner spoon surface 112 provides suction space while also greatly ensuring the mechanical strength of the cutting section. The outer spoon surface 113 can increase the thickness of the cutting section 11 and reduce the impact of the inner spoon surface 112 on the mechanical strength of the cutting section 11.
[0039] In addition, since the cutting section 11 is tilted relative to the blade 2, it is easier for medical staff to find the appropriate cutting angle and suction angle, the surgical field is exposed more widely, the operation difficulty is reduced, and the surgical efficiency is further improved.
[0040] For example Figure 8 As shown, medical staff can cut the bone tissue 6, and the bone fragments 7 produced by cutting can be removed through the suction port 52. Since the cutting part 11 is set at an angle, it is easy for medical staff to find the appropriate cutting angle and suction angle.
[0041] like Figure 1 and Figure 2 As shown, in this embodiment, the hollow channel 5 extends along the central axis of the tool holder 2. Figure 2 The dotted line in the diagram represents the central axis of the tool holder 2. The hollow channel 5, positioned along the central axis, reduces its impact on the strength of the tool holder 2.
[0042] The angle between the extension direction of the cutting part 11 and the central axis is between 5 degrees and 40 degrees. Within this range, when the angle is less than 5 degrees, it is not easy to find the suction port and find a suitable suction angle. When the angle is greater than 40 degrees, the end of the cutting part 11 deviates too much from the central axis of the cutter bar 2, which is not easy to find a suitable cutting angle for the cutting part 11. Therefore, the angle range is set between 5 degrees and 40 degrees.
[0043] like Figure 3 and Figure 4 As shown, Figure 3 A schematic diagram of the inner spoon surface of an embodiment of the present invention is shown. Figure 4 A cross-sectional structural diagram of the inner spoon surface of an embodiment of the present invention is shown, specifically illustrating the way the first inner spoon surface is engaged with the suction port.
[0044] In this embodiment, the inner spoon surface 112 includes a first inner spoon surface 114, and the suction port 52 penetrates through the first inner spoon surface 114. The first inner spoon surface 114 extends to the end of the cutting part 11. This arrangement allows the bone fragments cut off by the cutting part 11 to quickly come into contact with the first inner spoon surface 114 and slide along the surface of the first inner spoon surface 114 to the suction port 52, thereby improving the efficiency of bone fragment removal.
[0045] In this embodiment, the inner spoon surface 112 further includes a second inner spoon surface 115 and a third inner spoon surface 116, which are concave and disposed on opposite sides of the first inner spoon surface 114. The second inner spoon surface 115 and the third inner spoon surface 116 are symmetrically arranged about the central axis. The second inner spoon surface 115 and the third inner spoon surface 116 extend from a position near the suction port 52 toward an end near the cutting part 11. The second inner spoon surface 115 and the third inner spoon surface 116 can increase the internal space size of the inner spoon surface. The bone fragments on the bone surface are irregularly arranged at the end of the suction port 52 facing the cutting part 11, so that the bone fragments have an acceleration along the central axis after being attracted. This arrangement allows the bone fragments that are directly opposite the first inner spoon surface 114 to enter the suction port 52 along the first inner spoon surface 114, and allows the bone fragments that are deviated from the first inner spoon surface 114 to enter the second inner spoon surface 115 or the third inner spoon surface 116 for buffering before entering the suction port 52, effectively preventing the bone fragments from overflowing.
[0046] In practical applications, the suction function can be achieved by setting the first inner spoon surface 114 alone. The suction effect can be increased by setting the second inner spoon surface 115 and the third inner spoon surface 116 on the basis of the first inner spoon surface 114. Production can be carried out according to actual needs.
[0047] like Figure 5 and Figure 6 As shown, in this embodiment, a blocking part 117 is provided on the first inner spoon surface 114, and the suction port 52 is located between the blocking part 117, the second inner spoon surface 115, and the third inner spoon surface 116. Since the proximal end of the first inner spoon surface 114 is unobstructed, bone fragments are very likely to pass through the proximal end of the first inner spoon surface 114, resulting in a prolonged suction time. Therefore, the blocking part 117 can block bone fragments that slide along the first inner spoon surface 114 and exceed the suction port 52, effectively preventing bone fragments from overflowing and facilitating subsequent suction of bone fragments by the suction port 52.
[0048] like Figure 5 As shown, in one specific embodiment of this example, the blocking part 117 is a dot-shaped protrusion. Multiple dot-shaped protrusions are staggered and spaced apart at the proximal end of the first inner spoon surface 114, thereby blocking bone fragments.
[0049] like Figure 6 As shown, in one specific embodiment of this example, the blocking part 117 is an annular protrusion. One or more annular protrusions are spaced apart at the proximal end of the first inner spoon surface 114, and the annular surface faces the end of the cutting part 11, thereby blocking the bone fragments.
[0050] Of course, the blocking part 117 can also be configured as a protruding ridge or other structure that can slow down or prevent the movement of bone fragments.
[0051] like Figure 3 andFigure 5 As shown, in this embodiment, the cutting part 11 includes a cutting blade 111 and an inner spoon surface extending close to the cutting blade 111. Specifically, the first inner spoon surface 114 extends to abut against the cutting blade 111, so that after the cutting blade 111 removes the bone fragments, the bone fragments can slide along the inner wall of the first inner spoon surface 114 into the suction port 52, so as to remove bone fragments while cutting, and ensure that the cutting work is carried out efficiently.
[0052] The end of the cutting part 11 can be either curved or flat, and the cutting blades 111 are arranged at even intervals on the end face of the cutting part 11.
[0053] like Figure 4 As shown, Figure 4 The angle of the cutting blade 111 is also shown. In this embodiment, the intersection of the arc surface where the first inner spoon surface 114 is located and the central axis of the hollow channel 5 is taken as the base point. For example, the intersection of the two dashed lines in the figure is recorded as the base point. The line connecting the top of the cutting blade 111 and the base point has a first angle with the central axis. The range of the first angle is 5 degrees to 40 degrees. Within this range, the outer edge of the cutting blade 111 can be allowed to have a certain curvature, so as to facilitate the cutting blade 111 to make point contact cutting with the bone surface, thereby achieving precise cutting.
[0054] like Figure 3 , Figure 5 and Figure 7 As shown, in this embodiment, the cutting part 11 is provided with a plurality of cutting blades 111, and a cutting groove 101 is formed between two adjacent cutting blades 111. A transition surface 118 is provided between the cutting groove 101 and the second inner spoon surface 115 and / or the third inner spoon surface 116. The cutting groove 101 can also perform cutting work. Bone fragments can enter the second inner spoon surface 115 and / or the third inner spoon surface 116 along the transition surface 118, and then enter the suction port 52, which increases the suction angle of the bone fragments.
[0055] like Figure 1 As shown, in this embodiment, a clamping part is provided at the proximal end of the blade holder 2, and a hollow channel 5 passes through the clamping part. The clamping part is rod-shaped and may include a clamping block 3 and a connector 4. The clamping block 3 facilitates the installation operation, and the connector 4 can be connected to the ultrasonic handpiece. The hollow channel 5 can extend through the connector 4 to form a connection port 51, which can communicate with the negative pressure channel of the ultrasonic handpiece.
[0056] like Figure 1 and Figure 2 As shown, in this embodiment, the blade 1 includes an extension 12 located between the cutting section 11 and the blade 2. One end of the inner spoon surface 112 extends from the extension 12 to the far end of the cutting section 11, thereby increasing the extension length of the inner spoon surface 112 and thus increasing the attraction coverage area of the inner spoon surface 112.
[0057] like Figure 1 As shown, in this embodiment, the clamping part, the tool holder 2, and the extension part 12 can be made with variable diameter, thereby reducing the vibration amplitude of the tool holder 2, which is beneficial to achieving precise cutting.
[0058] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.
Claims
1. An ultrasonic cutting tool, characterized in that, include: The tool holder (2) is provided with a hollow channel (5) that runs through the proximal and distal ends; The blade (1) is connected to the distal end of the blade (2) and includes a cutting portion (11) that extends obliquely relative to the blade (2). The cutting portion (11) has an outer spoon surface (113) and an inner spoon surface (112). The outer spoon surface (113) is convex and the inner spoon surface (112) is concave. The hollow channel (5) extends through the inner spoon surface (112) to form a suction port (52).
2. The ultrasonic cutting tool according to claim 1, characterized in that, The hollow channel (5) extends along the central axis of the blade (2); the angle between the extension direction of the cutting part (11) and the central axis is in the range of 5 degrees to 40 degrees.
3. The ultrasonic cutting tool according to claim 1, characterized in that, The inner spoon surface (112) includes a first inner spoon surface (114), through which the suction port (52) passes; it also includes a second inner spoon surface (115) and a third inner spoon surface (116) disposed on opposite sides of the first inner spoon surface (114) and having a concave shape, the second inner spoon surface (115) and the third inner spoon surface (116) extending from a position near the suction port (52) toward an end near the cutting part (11).
4. The ultrasonic cutting tool according to claim 3, characterized in that, A blocking part (117) is provided on the first inner spoon surface (114), and the suction port (52) is located between the blocking part (117), the second inner spoon surface (115), and the third inner spoon surface (116).
5. The ultrasonic cutting tool according to claim 4, characterized in that, The blocking part (117) is a dot-shaped protrusion, an annular protrusion, or a ridge.
6. The ultrasonic cutting tool according to any one of claims 3 to 5, characterized in that, The cutting portion (11) includes a cutting blade (111), and the inner spoon surface extends close to the cutting blade (111).
7. The ultrasonic cutting tool according to claim 6, characterized in that, Taking the intersection of the arc surface where the first inner spoon surface (114) is located and the central axis of the hollow channel (5) as the base point, the line connecting the top of the cutting blade (111) and the base point has a first angle with the central axis, and the first angle ranges from 5 degrees to 40 degrees.
8. The ultrasonic cutting tool according to claim 6, characterized in that, The cutting part (11) is provided with a plurality of cutting blades (111), and a cutting groove is formed between two adjacent cutting blades (111). A transition surface (118) is provided between the cutting groove and the second inner spoon surface (115) and / or the third inner spoon surface (116).
9. The ultrasonic cutting tool according to claim 1, characterized in that, The tool holder (2) has a clamping part at its near end, and the hollow channel (5) passes through the clamping part.
10. The ultrasonic cutting tool according to claim 1, characterized in that, The blade (1) includes an extension (12) located between the cutting section (11) and the blade (2), with one end of the inner spoon surface extending from the extension (12) toward the distal end of the cutting section (11).