Energy-based surgical cutter head for large vessel closure and surgical ultrasonic surgical instrument

Abstract

The application provides a large blood vessel closure energy-based surgical cutter head and a surgical ultrasonic surgical instrument, and relates to the field of medical instruments.The length direction of the surgical cutter head is formed in a first direction, two ends of the cutter head in the length direction are respectively formed into a head and a root, and the surgical cutter head comprises: a main cutting surface, which is a plane and extends from the root to the head; and cutting auxiliary surfaces, which are both planes and are located on both sides of the main cutting surface in a width direction, wherein the width direction is perpendicular to the length direction; and wherein one cutting auxiliary surface forms a first included angle with the main cutting surface, and the other cutting auxiliary surface forms a second included angle with the main cutting surface.The surgical cutter head can improve the coagulation and closure capacity of the surgical cutter head while having sufficient cutting capacity.

Description

Technical Field

[0001] This application relates to the field of medical devices, and more particularly to an energy-based surgical tip and surgical ultrasound instrument suitable for large blood vessel closure. Background Technology

[0002] Surgical instruments enable procedures such as cutting biological tissues and closing blood vessels. They are characterized by less bleeding, less damage to surrounding tissues, and faster postoperative recovery. They act on human tissues to cut and seal them.

[0003] The cutting cross-section of the surgical instrument's blade is an arc groove, which makes it less effective at clotting large blood vessels. Summary of the Invention

[0004] This application provides an energy-based surgical tip and surgical ultrasound instrument suitable for closing large blood vessels. The energy can be ultrasound, and / or any other suitable energy, such as monopolar radiofrequency energy, bipolar radiofrequency energy, etc. In particular, with the support of radiofrequency and ultrasound combined energy, it can close large blood vessels larger than 7mm and facilitate tissue dissection.

[0005] This application provides an energy-based surgical tip for large vessel closure. The surgical tip has its length direction defined in a first direction, with a head and a root formed at its two ends along this length. The surgical tip includes: a main cutting surface, which is planar and extends from the root to the head; and two cutting auxiliary surfaces, which are planar and perpendicular to the length direction, located on either side of the main cutting surface in a width direction. One of the cutting auxiliary surfaces forms a first angle with the main cutting surface, and the other forms a second angle with it. This allows the surgical tip to form a larger contact area with larger blood vessels requiring closure, such as those larger than 7 mm, thereby generating a greater burst pressure and achieving a better closure effect. Furthermore, the edges between the auxiliary surfaces and the cutting surface ensure that the surgical tip still retains good cutting capabilities.

[0006] In some embodiments, the width of the main cutting surface decreases in the direction from the root to the head. Thus, different positions of the main cutting surface have different widths, allowing for selection of different positions for operation according to surgical needs, thereby eliminating the need for frequent tool changes during surgery.

[0007] In some embodiments, the width of the main cutting surface is between 0.2 mm and 1.5 mm. This size range allows the surgical tip to generate greater burst pressure on large blood vessels while maintaining cutting efficiency.

[0008] In some embodiments, the first and second included angles are equal and located between 25 and 40 degrees. This angle range allows the scalpel tip to generate greater burst pressure on large blood vessels while maintaining cutting efficiency.

[0009] In some embodiments, the surgical blade further includes: a first cutting surface located on one side of the first auxiliary cutting surface in a direction perpendicular to the length, the first auxiliary cutting surface being located between the main cutting surface and the first cutting surface; and a second cutting surface located on one side of the second auxiliary cutting surface in a direction perpendicular to the length, the second auxiliary cutting surface being located between the main cutting surface and the second cutting surface. Thus, cutting portions can be formed on both sides of the surgical blade in the width direction, making cutting and dissection operations of the surgical blade more convenient.

[0010] In some embodiments, the first cutting surface includes a first cutting plane and a first cutting arc surface, arranged sequentially in the direction from the root to the head, with a non-smooth transition between the first cutting plane and the first cutting arc surface; the second cutting surface includes a second cutting plane and a second cutting arc surface, arranged sequentially in the direction from the root to the head, with a smooth transition between the second cutting plane and the second cutting arc surface. Thus, there are no sharp edges between the second cutting plane and the second cutting arc surface, allowing the surgical tip to meet different needs during cutting or peeling operations, choosing either the side with the sharp edges or the side without sharp edges.

[0011] In some embodiments, at least a portion of the first cutting arc surface is concave towards the main cutting surface. This creates a wider range of width dimensions at different positions of the scalpel tip, further meeting diverse surgical needs.

[0012] In some embodiments, the scalpel tip further includes a dissection surface located on the side opposite the main cutting surface in the thickness direction, the thickness direction being perpendicular to both the length and width directions; wherein the main cutting surface is a plane, the main cutting surface and the dissection surface form a third angle, and the thickness of the scalpel tip decreases from the root to the head. This allows for a scalpel tip structure that is thick at the root and thin at the head, not only providing greater structural strength at the root of the scalpel tip but also making it easier for the tip to penetrate between the tissues to be dissected.

[0013] In some embodiments, the third included angle is between 2 and 3 degrees. This allows the tip of the scalpel to easily penetrate between the tissues to be dissected while maintaining sufficient structural strength at the base of the scalpel.

[0014] The second aspect of this application provides a surgical ultrasound instrument, which is a surgical ultrasound instrument using multiple energy types for treating hepatobiliary tissues. It includes: a housing with an internal receiving cavity; a rear grip assembly located outside the receiving cavity and movably connected to the housing; a cutting section located outside the receiving cavity and movably connected to the rear grip assembly, the cutting section and the rear grip assembly located at opposite ends of the housing; and a transmission section located within the receiving cavity and connecting the rear grip assembly and the cutting section. The cutting section includes a forceps assembly and a surgical blade as provided in the first aspect of the above embodiment. The rear grip assembly allows the forceps assembly and the surgical blade to move closer or further apart. Thus, the rear grip assembly and the front grip assembly form a stable gripping structure, and the driving force provided by the rear grip assembly allows for more convenient control of the forceps head and the wave knife bar to perform operations such as traction, separation, cutting, and coagulation on tissues.

[0015] This application provides an energy-based surgical tip and surgical ultrasound instrument suitable for large blood vessel closure. The surgical tip is formed along its length in a first direction, with a head and a root at both ends along the length. The surgical tip includes a main cutting surface extending from the root to the head, and two auxiliary cutting surfaces disposed on both sides of the main cutting surface in the width direction. The main cutting surface and the two auxiliary cutting surfaces are planar, thereby allowing the surgical tip to form a larger contact area with the tissue to be coagulated, thus enabling the surgical tip to generate a larger burst pressure. This results in better closure of larger blood vessels, especially those larger than 7 mm. Furthermore, the two auxiliary cutting surfaces are not parallel to the main cutting surface, thus forming an edge between the two auxiliary cutting surfaces and the main cutting surface, allowing the surgical tip to still maintain a good cutting effect. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of an energy-based surgical tip for closure of large blood vessels provided in this application embodiment; Figure 2 A schematic diagram showing the angle relationship between a first auxiliary cutting surface, a second auxiliary cutting surface, and a main cutting surface in an energy-based surgical tip for large vessel closure provided in an embodiment of this application; Figure 3 A schematic diagram illustrating the relative positional relationship between the main cutting surface and the dissection surface in an energy-based surgical tip for large vessel closure provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of a surgical ultrasound instrument provided in an embodiment of this application; Figure 5 This is an assembly diagram of a front handle and a rear handle in a surgical ultrasound instrument provided in an embodiment of this application; Figure 6 This is an assembly diagram of a rear latch and a sliding latch in a surgical ultrasound instrument provided in an embodiment of this application; Figure 7 This is an assembly diagram of a connecting part, a shank, and a cutting head in a surgical ultrasound instrument provided in an embodiment of this application; Figure 8 This is a schematic diagram illustrating the assembly of a scalpel and a scalpel head in a surgical ultrasound instrument provided in an embodiment of this application. Figure 9 A schematic diagram showing the width of the main cutting surface of the surgical blade in the surgical ultrasound instrument provided in this application embodiment; Figure 10 This is a schematic diagram of another surgical blade provided in an embodiment of this application.

[0017] Explanation of reference numerals in the attached figures 1. Main rod assembly; 12. Transmission unit; 13. Connecting unit; 111. Pliers head assembly; 112. Scalpel head; 1121. Main cutting surface; 1122. First auxiliary cutting surface; 1123. Second auxiliary cutting surface; 1124. Second cutting arc surface; 1125. Peeling surface; 1126. First end cutting plane; 1127. First cutting arc surface; 1128. Second cutting plane; 2. Main body assembly; 21. Housing; 22. Rear handle assembly; 23. Front handle; 221. Sliding latch; 222. Latch pin; 223. Connecting rod; 224. Connecting rod pin; 225. Rear handle pin; 226. Rear handle. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] The specific technical features described in the various embodiments in the detailed implementation can be combined in various ways without contradiction. For example, different implementation methods can be formed by combining different specific technical features. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features in this invention will not be described separately.

[0020] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0021] Additionally, it should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In the following description, the terms "first," "second," etc., are used merely to distinguish different objects and do not indicate any similarity or connection between them. It should be understood that the directional descriptions such as "above," "below," "inside," and "outside" refer to the orientation under normal use conditions.

[0022] In the following specific embodiments, the surgical ultrasound surgical instrument can be applied to any surgical scenario, such as kidney surgery or liver and gallbladder surgery. The scalpel has a surgical blade head, which can achieve cutting and blood vessel coagulation functions. The shape and function of the surgical blade head are illustrated below with reference to various embodiments.

[0023] In some embodiments, such as Figure 1 As shown, the surgical blade 112 forms a length direction in a first direction, and a head and a root are formed at both ends of the surgical blade 112 in the length direction. The surgical blade 112 includes a main cutting surface 1121, a first auxiliary cutting surface 1122, and a second auxiliary cutting surface 1123.

[0024] The main cutting surface 1121 is planar and extends from the root to the head, thus enabling the scalpel tip 112 to cut along its entire length. Simultaneously, in the width direction, the first auxiliary cutting surface 1122 and the second auxiliary cutting surface 1123 are located on either side of the main cutting surface 1121. Both auxiliary cutting surfaces are planar, and their directions form a first angle and a second angle with the direction of the main cutting surface 1121, respectively. This means that neither auxiliary cutting surface is parallel to the main cutting surface 1121, thereby creating a cutting surface at the intersection of the main cutting surface 1121 and the two auxiliary cutting surfaces. By setting the main cutting surface 1121, the first auxiliary cutting surface 1122, and the second auxiliary cutting surface 1123 as planes, the surgical blade 112 can form a larger contact area with the blood vessel that needs to be coagulated, thereby enabling the surgical blade 112 to generate greater burst pressure on the tissue. This allows the surgical blade 112 to have a better coagulation effect on blood vessels, especially large blood vessels larger than 7 mm. At the same time, by setting the two auxiliary cutting surfaces to be on different planes from the main cutting surface, the two edges formed at the intersection allow the surgical blade 112 to still have good cutting ability.

[0025] This invention provides a surgical blade head. The surgical blade head is formed along its length in a first direction. The surgical blade head has a head and a root at both ends along its length. The surgical blade head includes a main cutting surface extending from the root to the head, and two auxiliary cutting surfaces disposed on both sides of the main cutting surface in the width direction. Both the main cutting surface and the two auxiliary cutting surfaces are planar, thereby allowing the surgical blade head to form a larger contact area with the tissue requiring coagulation. This allows the surgical blade head to generate a larger burst pressure, resulting in better coagulation function for larger blood vessels, especially those larger than 7 mm. Furthermore, the two auxiliary cutting surfaces are not parallel to the main cutting surface, thus forming an edge between the two auxiliary cutting surfaces and the main cutting surface, ensuring that the surgical blade head still achieves a good cutting effect.

[0026] In some embodiments, such as Figure 1 As shown, the width of the main cutting surface 1121 decreases from the root to the head. This can be understood as the main cutting surface 1121 being able to form different widths in the length direction. The operator can use a portion of the main cutting surface 1121 with the required width according to different needs, so that the surgical blade 112 can meet different cutting and coagulation requirements. That is, different requirements can be met by one surgical blade, so that the blade does not need to be changed frequently during the operation.

[0027] In some embodiments, such as Figure 1As shown, the size of the main cutting surface 1121 in the width direction is between 0.2 mm and 1.5 mm. It should be noted that the width of the main cutting surface 1121 is related to the thermal damage data of the scalpel tip. Thermal damage data refers to the degree of thermal damage to the surrounding area in addition to the cutting area. If the width of the main cutting surface 1121 is set too large, it will result in an excessively large thermal damage area. By setting the width of the main cutting surface 1121 between 0.2 mm and 1.5 mm, the thermal damage data of the scalpel tip can be controlled within an acceptable range while achieving a greater coagulation effect.

[0028] Please refer to Table 1, which shows the relationship between the width of the main cutting surface 1121, the bursting pressure, and the required cutting time. As shown in Table 1, when cutting blood vessels with a diameter of 8 mm to 9 mm, the burst pressure is significantly higher when the width of the main cutting surface is between 0.2 mm and 1.5 mm than at other widths. Simultaneously, the cutting time is significantly shorter than at other main cutting surface widths. It should be noted that although the cutting time is also short at a main cutting surface width of 0.1 mm, the burst pressure is relatively low, therefore 0.1 mm was not chosen as the width range for the main cutting surface. Preferably, the width of the main cutting surface 1121 is between 0.5 mm and 0.8 mm. Within this width range, the surgical blade can generate a larger burst pressure while maintaining cutting efficiency.

[0029] In some embodiments, such as Figure 2 As shown, the first included angle b is formed between the first auxiliary cutting surface 1122 and the main cutting surface 1121, and the second included angle c is formed between the second auxiliary cutting surface 1123 and the main cutting surface 1121. The first included angle b and the second included angle c are the same and are between 25 degrees and 40 degrees. It should be noted that the two included angles will affect the coagulation ability and thermal damage data of the scalpel tip. If the two included angles are too large, the total width of the main cutting surface 1121 and the two auxiliary cutting surfaces will be too small, thereby reducing the coagulation ability of the scalpel tip. If the two included angles are too small, the total width of the main cutting surface 1121 and the two auxiliary cutting surfaces will be too large, thereby causing thermal damage to the excessively large area by the scalpel tip. By controlling the first included angle and the second included angle between the two auxiliary cutting surfaces and the main cutting surface between 25 degrees and 40 degrees, the thermal damage data can be controlled within an acceptable range while the scalpel tip has a better coagulation effect.

[0030] Please refer to Table 2, which shows the relationship between the angle range of the second included angle, the blasting pressure, and the cutting time (the first included angle is the same as the second included angle). As shown in Table 2, when cutting blood vessels with a diameter of 8 mm to 9 mm, the burst pressure is significantly greater than that of other widths when the first and second included angles are within the range of 25 degrees to 40 degrees. At the same time, the cutting time is significantly shorter than that of other main cutting surfaces within the width range.

[0031] In some embodiments, such as Figure 1 As shown, the scalpel head also includes a first cutting surface and a second cutting surface. The first cutting surface and the second cutting surface are located on both sides of the main cutting surface 1121, and the first auxiliary cutting surface 1122 is located between the main cutting surface 1121 and the first cutting surface. The second auxiliary cutting surface 1123 is located between the main cutting surface 1121 and the second cutting surface. It can be understood that, in the width direction, the first cutting surface and the second cutting surface are located at both ends of the scalpel head, so that a cutting function part can be formed at both ends of the width direction of the scalpel head, and the cutting and dissection of tissue can be realized at both ends of the scalpel head.

[0032] In some embodiments, such as Figure 1 As shown, the first cutting surface includes a first cutting plane 1126 and a first cutting arc surface 1127, arranged sequentially from the root towards the head. Simultaneously, the second cutting surface includes a second cutting plane 1128 and a second cutting arc surface 1124, arranged sequentially from the root towards the head. This can be understood as the scalpel tip having both planar and arc surfaces. Depending on the size or shape of the tissue to be cut, the corresponding planar or arc surface can be adaptively selected for cutting or dissecting, thus adapting the scalpel tip to different surgical needs. Furthermore... The first cutting plane 1126 and the first cutting arc surface 1127 have a non-smooth transition, thus forming an edge between them. At the same time, the second cutting plane 1124 and the second cutting arc surface 1127 have a smooth transition, so that there is no edge between them. This allows cutting surfaces with cutting capabilities to be formed on both sides of the scalpel head in the width direction. The operator can choose to use the side with the edge for cutting or peeling, or the side without the edge, according to the peeling requirements. This allows the scalpel head to further meet different cutting or peeling needs.

[0033] In some embodiments, such as Figure 1As shown, at least a portion of the first cutting arc surface 1127 is concave in the direction of the main cutting surface 1121, so that at least a portion of the first cutting arc surface 1127 is located below the first cutting plane 1124. This structure allows the total width of the scalpel head to decrease uniformly from the root to the head, but a portion of it decreases at a different rate than the other portions, thus allowing the width of the scalpel head to form a wider range of dimensions to further meet different surgical needs.

[0034] In some embodiments, such as Figure 3 As shown, the scalpel tip also includes a dissection surface 1125, which is located on the opposite side of the main cutting surface 1121 in the thickness direction. Figure 1 The length direction and Figure 1 The width direction is perpendicular, and the dissection surface can more easily dissect the tissue. The main cutting surface 1121 and the dissection surface 1125 form a third angle, and the thickness of the scalpel head decreases from the root to the head, so that the thickness of the head is smaller, making it easier for the head of the scalpel head to be inserted between the tissues to be dissected. At the same time, the root of the scalpel head has a large thickness, so that the scalpel head has strong structural strength.

[0035] In some embodiments, such as Figure 3 As shown, the third included angle c is between 2 and 3 degrees. It should be noted that if the third included angle is too large, the thickness of the scalpel tip will vary too much, making it impossible to balance the dissection requirements between the scalpel tip and the structural strength requirements of the scalpel tip root. If the third included angle is too small, the range of variation in the thickness of the scalpel tip will be too small, thus making the scalpel tip unable to meet different surgical needs. Setting the third included angle c between 2 and 3 degrees allows the scalpel tip to have sufficient structural strength while meeting different surgical needs.

[0036] Optionally, at least one plane is formed at the head of the scalpel tip. This can be understood as the main cutting surface, the first cutting surface, the second cutting surface, and the dissection surface converging at the head to form a plane with a very small area, thereby allowing the tip of the scalpel tip to extend into small tissue pores. Optionally, the head of the scalpel tip is formed with an arc-shaped curved surface, thereby reducing the possibility of tissue damage caused by the head of the scalpel tip.

[0037] This invention also provides a surgical ultrasound surgical instrument, which can be any surgical instrument. For example, the surgical ultrasound surgical instrument can be a surgical robot or an ultrasonic scalpel. The surgical ultrasound surgical instrument uses the scalpel head provided in the above embodiments. The structure and function of the surgical ultrasound surgical instrument will be described by way of example below.

[0038] In some embodiments, such as Figures 4 to 8 As shown, the surgical ultrasound instrument includes a housing 21, a rear handle assembly 22, a cutting part, and a transmission part 12. A receiving cavity is formed inside the housing 21. The rear handle assembly 22 is located outside the receiving cavity and is movably connected to the housing 21. The cutting part is located outside the receiving cavity and is movably connected to the ultrasonic scalpel housing. The cutting part and the rear handle assembly 22 are located at both ends of the housing 21. The transmission part 12 is located inside the receiving cavity and connects the rear handle assembly 22 and the cutting part. The cutting section includes a pliers assembly 111 and a... Figures 1 to 3 The surgical blade 112 shown in any of the images has a forceps assembly 111 and a surgical blade 112 movably connected to form a scissor-like structure. The rear handle assembly 22 can control the forceps assembly 111 and the surgical blade 112 to move closer or further apart, thereby realizing the cutting, separation and sealing functions of the cutting part.

[0039] This invention also provides a non-dominant-handed bipolar ultrasonic surgical scalpel for the liver and gallbladder, such as... Figures 4 to 8 The ultrasonic scalpel shown includes a main shaft assembly 1, which includes a cutting section, a connecting section 13, and a transmission section 12; and a housing assembly 2, which is located on the side of the main shaft assembly near the transmission section 12 and encloses the transmission section 12. The housing assembly includes an ultrasonic scalpel housing, a rear handle assembly 22 connected to the connecting section 13, a transmission structure and a forceps gripping force stabilization structure device located inside the housing. The gripping operation mode of the front handle 23 and the rear handle assembly 22 improves the gripping stability during surgery. The rear handle assembly 22 is used as the driving force to control the forceps head and the scalpel head 112 to pull, separate, cut, and coagulate the tissue to be cut.

[0040] The gripping stability structure consists of an ultrasonic scalpel housing, a front gripping hand 23 that fixes the four fingers of the forefoot, and a rear gripping hand assembly 22 that uses the thumb as the driving force to grip the front gripping hand 23. The rear gripping hand assembly 22 is always in the zero position and automatically returns to the zero position by the return spring after activation.

[0041] Optionally, the front hand 23 is fixed to the housing by two positioning pin holes, forming a rigid connection with the housing to provide gripping space for the four fingers of the forehand. The vertical gap inside the front hand 23 is between 55 mm and 60 mm to provide space for the three fingers when gripping. The diameter of the inner circle of the finger hook structure at the tail of the front hand 23 should be between 14 mm and 16 mm to provide gripping space for the little finger.

[0042] Optionally, the rear handle assembly 22 comprises a sliding latch 221, a latch pin 222, a connecting rod 223, a connecting rod pin 224, a rear handle 226 pin 225, and a rear handle 226. The sliding latch 221 and latch pin 222 are interference-fitted and fit within a groove inside the ultrasonic scalpel housing, providing a limiting function. The connecting rod 223 serves as an intermediate connector between the sliding latch 221 and the rear handle 226, with both ends hinged to the connecting rod pin 224 and latch pin 222 respectively, acting as a transmission component to provide a transmission function. The rear handle assembly 22 is hinged to the rear handle 226 pin hole inside the ultrasonic scalpel housing by the rear handle 226 pin 225, allowing for counter-clockwise selection at the illustrated position, enabling the sliding latch 221 to move back and forth within the groove. The internal oval dimensions of the rear buckle 226 should be between 26 mm and 28 mm in length and between 20 mm and 22 mm in width, and should work in conjunction with the thumb to provide driving force when engaged.

[0043] The transmission part 12 is divided into an inner tube and an outer tube, which are concentrically slidingly fitted. The connecting part 13 is located on one side of the inner tube.

[0044] Optionally, the cutting section includes a pliers assembly and a blade. The pliers assembly is connected to the side of the transmission section 12 away from the connecting section 13. The blade is a large blade shape and is located inside the connecting section 13. It has a main cutting surface, a first auxiliary cutting surface and a second auxiliary cutting surface on the upper and lower sides of the main cutting surface, a peeling surface on the back of the main cutting surface, an upper cutting surface and an upper cutting arc surface between the peeling surface and the first auxiliary cutting surface, and a lower cutting surface and a lower cutting arc surface between the peeling surface and the second auxiliary cutting surface.

[0045] Optionally, the cross-section of the blade head is trapezoidal. The width of the main cutting surface in the cross-section, the angles b and c of the first auxiliary cutting surface and the second auxiliary cutting surface, and the width of the cutting part determine the cutting efficiency and thermal damage data of the surgical blade head 112. To ensure the optimal data of the surgical blade head 112, the width at the blade head d is between 3.2 mm and 2.8 mm, the optimal width of the main cutting surface is between 0.2 mm and 1 mm, and the degrees of angles b and c are between 30 degrees and 40 degrees.

[0046] Optional, such as Figure 9 As shown, the data for the cutting part can also be: the width at the blade d is between 4 mm and 3.8 mm, the width of the main cutting surface is between 1.5 mm and 1 mm, and the degrees of angles b and c are between 25 degrees and 40 degrees.

[0047] Optionally, the lower cutting surface and the lower cutting arc surface are tangentially connected, while the upper cutting surface and the upper cutting arc surface are not tangential. A portion of the upper cutting arc surface is below the horizontal position of the upper cutting surface. This design allows for a more precise cutting tip, enabling doctors to perform precise dissections using the cutting tip.

[0048] Optional, such as Figure 10 As shown, the cutter head can also be round-headed. The cutting part also includes a main cutting surface, a first auxiliary cutting surface and a second auxiliary cutting surface arranged on the upper and lower sides of the main cutting surface, a peeling surface arranged on the back of the main cutting surface, an upper cutting surface and an upper cutting arc surface arranged between the peeling surface and the first auxiliary cutting surface, and a lower cutting surface and a lower cutting arc surface arranged between the peeling surface and the second auxiliary cutting surface. The difference is that the front end of the cutting part is round-headed, and the width of the main cutting surface decreases uniformly from the tail to the head.

[0049] Optionally, the dissection surface and the main cutting surface are set at an angle α, with the angle α being 2°-3°, and the tip of the cutting part is exactly at the thinnest part of the dissection surface and the main cutting surface; this allows the surgeon to use the thinner side of the cutting part for dissection during the operation.

[0050] Optionally, the pliers assembly has two symmetrical first connecting holes on one side, and two symmetrical hooks below the first connecting holes. The outer tube has a second connecting hole that mates with the first connecting holes. The second connecting hole and the first connecting hole are concentrically engaged by a connecting rod. The inner tube has two circular slots that mate with the hooks. The hooks move within the circular slots. When the latch is engaged, the latch assembly 22 pulls the connecting part 13 backward, causing the inner tube to move backward, thus allowing the pliers assembly to move towards the blade head to achieve the clamping function.

[0051] Optionally, the shape of the pliers head assembly can be matched with different pliers head assemblies depending on the shape of the cutting head.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An energy-based surgical tip for closing large blood vessels, characterized in that, The surgical blade head forms its length direction in a first direction, and the two ends of the surgical blade head in the length direction respectively form a head and a root. The surgical blade head includes: The main cutting surface is a plane that extends from the root to the head. Two cutting auxiliary surfaces are located on either side of the main cutting surface in the width direction. The cutting auxiliary surfaces are planes, and the width direction is perpendicular to the length direction. The first cutting surface is located on one side of the first auxiliary cutting surface in a direction perpendicular to the length. The first auxiliary cutting surface is located between the main cutting surface and the first cutting surface. The first cutting surface includes a first cutting plane and a first cutting arc surface. In the direction from the root to the head, the first cutting plane and the first cutting arc surface are arranged in sequence. The second cutting surface is located on one side of the second auxiliary cutting surface in a direction perpendicular to the length. The second auxiliary cutting surface is located between the main cutting surface and the second cutting surface. The second cutting surface includes a second cutting plane and a second cutting arc surface. In the direction from the root to the head, the second cutting plane and the second cutting arc surface are arranged in sequence. One of the cutting auxiliary surfaces forms a first angle with the main cutting surface, and the other cutting auxiliary surface forms a second angle with the main cutting surface.

2. The energy-based surgical tip for closing large blood vessels according to claim 1, characterized in that, The dimension of the main cut surface decreases in the width direction in the direction from the root to the head.

3. The energy-based surgical tip for closure of large blood vessels according to claim 1 or 2, characterized in that, The width dimension of the main cutting surface is between 0.2 mm and 1.5 mm.

4. The energy-based surgical tip for closure of large blood vessels according to claim 1 or 2, characterized in that, The first included angle and the second included angle are equal and are located between 25 degrees and 40 degrees.

5. The energy-based surgical tip for closing large blood vessels according to claim 1, characterized in that, The transition between the first cutting plane and the first cutting arc surface is not smooth. The second cutting plane and the second cutting arc surface have a smooth transition.

6. The energy-based surgical tip for closure of large blood vessels according to claim 5, characterized in that, At least a portion of the first cutting arc surface is concave in the direction of the main cutting surface.

7. The energy-based surgical tip for closing large blood vessels according to claim 1, characterized in that, The surgical blade also includes a dissection surface, which is located on the side opposite to the main cutting surface in the thickness direction, and the thickness direction is perpendicular to the length direction and the width direction. The main cutting surface is a plane, and the main cutting surface and the peeling surface form a third angle. The thickness of the scalpel head decreases in the direction from the root to the head.

8. The energy-based surgical tip for closure of large blood vessels according to claim 7, characterized in that, The third included angle is between 2 and 3 degrees.

9. A surgical ultrasound instrument, characterized in that, The surgical ultrasound instrument is a surgical ultrasound instrument that uses multiple energy types and is used for the treatment of hepatobiliary tissues. The surgical ultrasound instrument includes: The shell has an internal cavity; The rear handle assembly is located outside the receiving cavity and is movably connected to the housing; A cutting section is located outside the receiving cavity and is movably connected to the rear handle assembly. The cutting section and the rear handle assembly are located at both ends of the housing. The transmission part is located within the receiving cavity and connects the rear handle assembly and the cutting part; The cutting section includes a clamping head assembly and an energy-based surgical blade for closure of large blood vessels as described in any one of claims 1 to 8, wherein the rear-clamping hand assembly enables the clamping head assembly and the energy-based surgical blade for closure of large blood vessels to move closer to or further away from each other.

Images