Synchronous operation of cutting and hemostasis blade assembly based on multi-degree-of-freedom ultrasonic knife

Abstract

The present invention discloses a synchronous operation blade head assembly for cutting and hemostasis based on a multi-degree-of-freedom ultrasonic scalpel, and relates to the technical field of ultrasonic scalpels. Based on the basic structure and operation principle of the ultrasonic scalpel, the blade head assembly therein is structurally optimized and improved, which is specifically reflected in the clamping action formed between the bottom cabin and the upper pressure seat. The clamping action cooperates with the high-frequency movement process of the ultrasonic scalpel itself. When clamping the position of the tissue to be cut, the first ball in the upper pressure seat cooperates with the high-frequency movement of the ultrasonic scalpel itself, and on the basis of providing the clamping force, the second ball and the third ball are synchronously used to clamp the non-cutting tissue position. The three structures are used to cooperate with the ultrasonic scalpel to perform compression, which can avoid partial deviation of the clamped tissue due to high-frequency vibration. On this technical basis, in combination with the clamping action and the high-frequency movement action, the second ball and the third ball can perform directional "hydration and cooling" to avoid secondary damage to the non-cutting tissue position.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic scalpels, and in particular to a synchronously operated scalpel head assembly for cutting and hemostasis based on a multi-degree-of-freedom ultrasonic scalpel. Background Art

[0002] An ultrasonic scalpel is a high-frequency electrosurgical device, which is mainly used for operations such as cutting biological tissue and closing blood vessels. Its essence is based on high-frequency mechanical vibration, which causes the tip of the blade to produce high-frequency longitudinal mechanical vibration, thereby achieving tissue cutting and hemostasis. For details, please refer to the relevant content in publication number CN104739458A.

[0003] Conventional ultrasonic scalpels are mostly linear in structure. In order to facilitate the normal progress of the operation, they specifically include linear movement and rotation of the knife rod to perform multi-angle position operations. It should be noted that: when executing the cutting action, it is necessary to press the tissue part to be cut, but one side of the tissue part is subjected to the vibration energy from the tip of the knife head, while the other side is only subjected to the pressing force. As a result, during the high-frequency vibration process, the cutting position may deviate slightly and affect the cutting and hemostasis effects. In addition, the heat generated during the vibration process is too concentrated on one side and the temperature is relatively high, which will cause secondary damage to the adjacent tissue parts. This application proposes a solution. Summary of the invention

[0004] The purpose of the present invention is to provide a cutting and hemostatic synchronous operation blade head assembly based on a multi-degree-of-freedom ultrasonic scalpel. Based on the operating principle of the ultrasonic surgical scalpel, its cutting and hemostatic actions mainly rely on the friction and heat generated by the high-frequency vibration of the blade tip. However, the high-frequency vibration occurs at one side, which will affect the cutting and hemostatic effects.

[0005] The purpose of the present invention can be achieved by the following technical scheme: a synchronous operation blade head assembly based on a multi-degree-of-freedom ultrasonic knife for cutting and hemostasis, including a blade handle, a blade rod, and an ultrasonic blade head, wherein an upper pressure seat and a bottom cabin arranged from top to bottom are arranged at the end of the blade rod, and an inner sleeve rod corresponding to the upper pressure seat is arranged inside the blade rod;

[0006] The ultrasonic blade head is arranged in a position inside the bottom cabin, and the upper surface of the ultrasonic blade head is higher than the upper surface of the bottom cabin, lower dynamic seats are installed on the two sides of the bottom cabin corresponding to the ultrasonic blade head, an upper dynamic seat corresponding to the lower dynamic seat is installed in the upper pressure seat, and a first ball bearing corresponding to the ultrasonic blade head is arranged in the upper pressure seat;

[0007] A transmission guide rod is installed at one end of the ultrasonic knife head corresponding to the knife handle. The transmission guide rod and the end of the inner sleeve rod are arranged in the knife handle. A cooperative sleeve corresponding to the transmission guide rod is slidably installed in the inner position of the inner sleeve rod.

[0008] It is further configured that: the first ball is located directly above the ultrasonic cutter head, and a third ball and a second ball are respectively arranged in the lower dynamic seat and the upper dynamic seat.

[0009] It is further configured as follows: the first ball and the upper pressure seat, the third ball and the lower dynamic seat, and the second ball and the upper dynamic seat are all slidingly connected, and the first ball, the third ball and the second ball are linearly equidistantly arranged along the length direction of the ultrasonic blade.

[0010] It is further configured as follows: the diameter of the second rolling ball is smaller than the diameter of the third rolling ball, and the tangent horizontal plane of the lower side of the first rolling ball is higher than the upper surface position of the ultrasonic blade head.

[0011] It is further configured as follows: through-flow grooves corresponding to the second ball and the third ball are opened in the upper dynamic seat and the lower dynamic seat, and hoses connected to the through-flow grooves are installed on the upper pressure seat and the bottom cabin.

[0012] It is further configured that: the third rolling balls and the second rolling balls are arranged alternately, and the second rolling balls are located just above the middle position of the third rolling balls at two adjacent positions;

[0013] The tangent horizontal plane on the upper side of the third ball contacts the lower surface of the upper dynamic seat, and the tangent horizontal plane on the lower side of the second ball contacts the upper surface of the lower dynamic seat.

[0014] It is further configured as follows: a pressure-changing cavity is opened inside the cooperative sleeve, a pressure-bearing balloon is installed at an external position of the transmission guide rod corresponding to the internal position of the pressure-changing cavity, the pressure-bearing balloon is connected to the hose, and the transmission guide rod and the cooperative sleeve are slidably connected.

[0015] It is further configured that: the cross-sectional width of the pressure-changing cavity decreases in the direction from the bottom cabin to the tool handle, and the cross-sectional width of the pressure-changing cavity close to the bottom cabin is equal to the outer diameter of the pressurized balloon.

[0016] The present invention has the following beneficial effects:

[0017] The present invention optimizes the structure of the blade assembly according to the structural characteristics and operating principle of the ultrasonic scalpel. The structure is firstly reflected in the clamping action performed by the upper pressure seat and the bottom cabin, wherein the bottom cabin is used as a fixed position, and the upper pressure seat is used as an action member in the clamping action. When clamping the position of the tissue to be cut, the first ball corresponding to the ultrasonic blade head in the upper pressure seat cooperates with the high-frequency movement of the ultrasonic blade head. When the tissue to be cut is at the position, the second ball and the third ball are used to press the non-cutting tissue position synchronously. The three structures are used to cooperate with the ultrasonic blade head for pressing, which can avoid the partial deviation of the clamped tissue due to high-frequency vibration.

[0018] In combination with the above content, it is necessary to explain again that: in conjunction with the clamping action and the high-frequency movement process of the ultrasonic blade, the second ball and the third ball will produce non-directional sliding. In this process, the transmission guide rod is used to drive the pressurized balloon to move, so that the overall shape of the pressurized balloon undergoes local compression deformation. The pressurized balloon serves as a temporary storage space for the liquid, thereby cooperating with the high-frequency movement process of the transmission guide rod to squeeze the liquid inside the pressurized balloon into the through flow groove, which is used to carry out directional "hydration and cooling" of the second ball and the third ball to avoid secondary damage to non-cutting tissue areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the structure of the synchronous operation blade assembly for cutting and hemostasis based on a multi-degree-of-freedom ultrasonic scalpel proposed by the present invention;

[0021] Figure 2 A partial cross-sectional view of a knife rod in a synchronously operating knife head assembly for cutting and hemostasis based on a multi-degree-of-freedom ultrasonic knife proposed by the present invention;

[0022] Figure 3 The invention provides a multi-degree-of-freedom ultrasonic knife for synchronously operating a cutting and hemostasis blade assembly. Figure 2 A cross-sectional view of

[0023] Figure 4 It is a transverse cross-sectional view of the upper pressure seat and the bottom cabin in the synchronous operation cutter head assembly for cutting and hemostasis based on the multi-degree-of-freedom ultrasonic knife proposed by the present invention;

[0024] Figure 5 A lateral cross-sectional view of an upper pressure seat and a bottom cabin in a synchronously operating cutter head assembly for cutting and hemostasis based on a multi-degree-of-freedom ultrasonic knife proposed by the present invention;

[0025] Figure 6 This is an expanded view of the upper pressure seat and the bottom cabin in the synchronous operation cutter head assembly for cutting and hemostasis based on the multi-degree-of-freedom ultrasonic knife proposed by the present invention;

[0026] Figure 7 A cross-sectional view of the upper dynamic seat and the lower dynamic seat corresponding to the upper pressure seat and the bottom cabin in the synchronous operation cutter head assembly of the multi-degree-of-freedom ultrasonic knife proposed by the present invention,

[0027] In the figure: 1. knife handle; 2. knife rod; 3. bottom cabin; 4. upper pressure seat; 5. ultrasonic knife head; 6. cooperative sleeve; 7. inner sleeve rod; 8. pressure changing cavity; 9. transmission guide rod; 10. pressure balloon; 11. first ball; 12. through flow slot; 13. lower dynamic seat; 14. second ball; 15. third ball; 16. upper dynamic seat. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1: Based on the operating principle of an ultrasonic surgical knife, its cutting and hemostasis actions mainly rely on the friction and heat generated by the high-frequency vibration of the blade tip. However, the high-frequency vibration occurs at one side, which will affect the cutting and hemostasis effects. The following technical solutions are proposed:

[0030] Reference Figures 1 to 7 The synchronous operation blade assembly for cutting and hemostasis based on the multi-degree-of-freedom ultrasonic knife in this embodiment includes a blade handle 1, a blade rod 2, and an ultrasonic blade head 5. An upper pressure seat 4 and a bottom cabin 3 arranged from top to bottom are arranged at the end of the blade rod 2, and an inner sleeve rod 7 corresponding to the upper pressure seat 4 is arranged inside the blade rod 2;

[0031] The ultrasonic blade head 5 is arranged in the inner position of the bottom cabin 3, and the upper surface of the ultrasonic blade head 5 is higher than the upper surface of the bottom cabin 3. The bottom cabin 3 is provided with lower dynamic seats 13 at the two sides corresponding to the ultrasonic blade head 5, and the upper dynamic seat 16 corresponding to the lower dynamic seat 13 is installed in the upper pressure seat 4, and the first ball 11 corresponding to the ultrasonic blade head 5 is arranged in the upper pressure seat 4;

[0032] A transmission guide rod 9 is installed at one end of the ultrasonic blade head 5 corresponding to the blade handle 1, and the ends of the transmission guide rod 9 and the inner sleeve rod 7 are arranged in the blade handle 1. A cooperative sleeve 6 corresponding to the transmission guide rod 9 is slidably installed in the internal position of the inner sleeve rod 7. The first ball 11 is located directly above the ultrasonic blade head 5, and the third ball 15 and the second ball 14 are respectively arranged in the lower dynamic seat 13 and the upper dynamic seat 16.

[0033] Basic principle: First, the basic structure of the hospital ultrasonic knife is explained. The ultrasonic blade head 5 is based on the principle of high-frequency mechanical vibration. When the ultrasonic blade head is completely in contact with the local tissue, this vibration causes the blade tip to generate high-frequency longitudinal mechanical vibration, thereby achieving tissue cutting and hemostasis. The key structure is the transducer of the ultrasonic blade head 9 inside the handle 1. The transducer uses the electrostrictive effect or magnetostrictive effect to convert ultrasonic electrical energy into mechanical energy to generate high-frequency vibration. Through the coupling effect, the ultrasonic blade head 9 is driven to work and transmit energy to the local tissue of the human body, thereby achieving the purpose of surgical treatment. The clamping action of the upper pressure seat 4 relative to the bottom cabin 3 is specifically completed by the inner sleeve rod 7 inside it. Its essence is that the lower end of the upper pressure seat 4 is hinged on the guide rod 2. This part will not be explained in detail:

[0034] It should be noted that: Figure 3 For example, the ultrasonic blade head 9 performs multiple high-frequency movements in the horizontal direction, and the upper pressure seat 4 moves downward to cooperate with the ultrasonic blade head 9 to complete the clamping of the tissue part to be cut. However, during the clamping process, Figure 4 and Figure 5 The upper side of the tissue part to be cut is mainly compressed by multiple first balls 11, so that when the ultrasonic blade 5 moves at high frequency, the tissue part to be cut is still in a compressed state, but the upper pressure seat 4 does not fully compress the tissue part to be cut, so that the overall compression process still has a range of motion, but it does not mean that the tissue part to be cut will deviate, it is mainly to cooperate with the ultrasonic blade 5 to perform the cutting and hemostasis action.

[0035] Embodiment 2: Further explanation of the clamping action of the upper pressure seat and the bottom cabin to the tissue to be cut:

[0036] The first ball 11 and the upper pressure seat 4, the third ball 15 and the lower dynamic seat 13, and the second ball 14 and the upper dynamic seat 16 are all slidingly connected. The first ball 11, the third ball 15 and the second ball 14 are linearly equidistantly arranged along the length direction of the ultrasonic blade 5. The diameter of the second ball 14 is smaller than the diameter of the third ball 15. The tangent horizontal plane of the lower side of the first ball 11 is higher than the upper surface position of the ultrasonic blade 5.

[0037] Solution description: Combined with the clamping action in Example 1, the following is explained again. Figure 5 and Figure 7 To illustrate, the clamped tissue part to be cut only corresponds to the part of the ultrasonic blade 5 that is in the cutting state, but the two sides of the tissue part to be cut are specifically clamped by the second ball 14 and the third ball 15, which specifically includes the following contents:

[0038] The upper dynamic seat 16 and the lower dynamic seat 13 do not participate in the clamping process of the tissue part to be cut. Specifically, the second ball 14 and the third ball 15 are used to clamp the tissue part to be cut. Figure 7 For example, the center points of the second ball 14 and the third ball 15 are not located on the same vertical axis, and the diameter difference between the second ball 14 and the third ball 15 is further limited, so that the second ball 14 is located in the middle of the third ball 15 in two adjacent positions, and it is necessary to ensure that the second ball 14 contacts the lower dynamic seat 13 and the third ball 15 contacts the lower surface position of the upper dynamic seat 16, so as to be combined with Figure 7 The positional relationship in the figure is explained. When the tissue part to be cut is in the non-cutting position after being clamped, it is "pressed" in a wave shape by the second ball 14 and the third ball 15. The purpose is to increase the pressing force on the non-cutting part and avoid the deviation of the clamping of the tissue part to be cut due to the high-frequency movement of the ultrasonic blade 5.

[0039] Embodiment 3: In combination with Embodiment 2 and Embodiment 1, the following supplementary explanation is provided in conjunction with the clamping action and the high-frequency movement process of the ultrasonic blade head itself:

[0040] The upper dynamic seat 16 and the lower dynamic seat 13 are provided with through-flow grooves 12 corresponding to the second ball 14 and the third ball 15, and the upper pressure seat 4 and the bottom cabin 3 are provided with hoses connected with the through-flow grooves 12. The third ball 15 and the second ball 14 are arranged alternately, and the second ball 14 is located directly above the middle position of the third ball 15 at two adjacent positions;

[0041] The third ball 15 is in contact with the upper tangent horizontal plane and the lower surface of the upper dynamic seat 16, and the second ball 14 is in contact with the lower tangent horizontal plane and the upper surface of the lower dynamic seat 13. A pressure-changing cavity 8 is provided inside the cooperative sleeve 6, and a pressure-bearing balloon 10 is installed at the external position of the transmission guide rod 9 corresponding to the internal position of the pressure-changing cavity 8. The pressure-bearing balloon 10 is connected to the hose, and the transmission guide rod 9 and the cooperative sleeve 6 are slidably connected. The cross-sectional width of the pressure-changing cavity 8 decreases from the bottom cabin 3 to the tool handle 1, and the cross-sectional width of the pressure-changing cavity 8 close to the bottom cabin 3 is equal to the outer diameter of the pressure-bearing balloon 10.

[0042] Solution description: Combined with the first embodiment and the operating principle of the ultrasonic knife, its essence is to convert electrical energy into mechanical vibration to generate high-frequency ultrasonic waves, so that tissue molecules rub against each other to generate heat, thereby achieving a cutting effect, so that the temperature of the tissue to be cut rises rapidly to avoid affecting the non-cut tissue position. It still depends on the second ball 14 and the third ball 15, and specifically includes the following contents:

[0043] S1: Because local disinfection and cooling are required during the cutting process, a conventional ultrasonic knife is equipped with a fluid replenishment structure. However, in this embodiment, a through flow slot 12 is further provided for the arrangement positions of the second ball 14 and the third ball 15 to Figure 7 For example, first, the second ball 14 and the third ball 15 are "embedded" in the upper dynamic seat 16 and the lower dynamic seat 13, respectively, so that the second ball 14 and the third ball 15 can move freely in the upper dynamic seat 16 and the lower dynamic seat 13. This part can refer to the structural principle of the ballpoint pen tip. With the high-frequency movement of the ultrasonic blade head 5, the second ball 14 and the third ball 15 will also move freely, so that the liquid retained in the through-flow groove 12 can be brought out. Taking physiological saline as an example, the non-cutting tissue part can be cooled and cleaned. It should be noted that the free movement process of the second ball 14 and the third ball 15 is synchronized with the high-frequency movement process of the ultrasonic blade head 5, so that the cutting action can be coordinated for synchronous cooling, and it is mainly for the non-cutting tissue part;

[0044] S2: Combined to Figure 3 and Figure 7 Description, the ultrasonic blade 5 is briefly described. The transmission guide rod 9 is the actuating member of the ultrasonic blade 5. It can be understood that the transmission guide rod 9 will perform multiple reciprocating high-frequency movements along the length direction of the blade rod 2 in the cooperative sleeve 6, and in the clamping action, the inner sleeve rod 7 needs to move to the right to ensure that the lower pressure seat 4 completely clamps the tissue part to be cut. This part will not be described in detail;

[0045] It should be noted that the pressurized balloon 10 located inside the pressure-exchanging cavity 8 serves as a temporary storage space for media such as physiological saline. It can be understood that the end of the hose connected to the through-flow groove 12 is mainly installed in the water replenishment structure provided in the ultrasonic knife. The water replenishment structure is mainly represented by transporting liquid to the through-flow groove 12 through the pump body structure, but the hose is also connected to the pressurized balloon 10. When the transmission guide rod 9 is in a stationary state, that is, the ultrasonic blade head 5 does not perform a cutting action, it only relies on the water replenishment structure to replenish the liquid. However, when the ultrasonic blade head 5 performs a cutting action, combined with Figure 3 The cross-sectional width in the middle pressure-exchanging cavity 8, when the transmission guide rod 9 drives the pressurized balloon 10 to move to the right, it is compressed and deformed due to the influence of the structure of the pressure-exchanging cavity 8, and the liquid retained in the pressurized balloon 10 can be further pumped into the through flow groove 12, thereby improving the cooling action on the non-cutting tissue parts. Conversely, when the transmission guide rod 9 drives the pressurized balloon 10 to move to the left and reset, the volume of the pressurized balloon 10 is reset because it continues to be "replenished" by the hydration structure. Combined with the above content, it can be understood that: the pressurized balloon 10 mainly undergoes autonomous deformation in cooperation with the high-frequency movement of the ultrasonic blade 5, thereby improving the cooling action on the non-cutting tissue parts.

[0046] In summary: Based on the basic structure and operating principle of the ultrasonic scalpel, the structure of the blade assembly is optimized and improved, which is specifically reflected in the clamping action formed between the bottom cabin and the upper pressure seat. The clamping action cooperates with the high-frequency movement process of the ultrasonic blade head itself. When clamping the tissue position to be cut, the first ball in the upper pressure seat cooperates with the high-frequency movement of the ultrasonic blade head itself. On the basis of providing the clamping force, the second ball and the third ball are simultaneously used to clamp the non-cutting tissue position. The three structures are used to cooperate with the ultrasonic blade head for compression to avoid partial deviation of the clamped tissue due to high-frequency vibration. On this technical basis, in combination with the clamping action and the high-frequency movement action, the second ball and the third ball can perform directional "hydration and cooling" to avoid secondary damage to the non-cutting tissue position.

[0047] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A synchronously operated blade assembly for cutting and hemostasis based on a multi-degree-of-freedom ultrasonic blade, comprising a blade handle (1), a blade rod (2), and an ultrasonic blade head (5), characterized in that: An upper pressure seat (4) and a bottom cabin (3) are arranged from top to bottom at the end of the knife rod (2), and an inner sleeve rod (7) corresponding to the upper pressure seat (4) is arranged inside the knife rod (2); The ultrasonic blade head (5) is arranged in a position inside the bottom cabin (3), and the upper surface of the ultrasonic blade head (5) is higher than the upper surface of the bottom cabin (3); lower dynamic seats (13) are installed on both sides of the bottom cabin (3) corresponding to the ultrasonic blade head (5); an upper dynamic seat (16) corresponding to the lower dynamic seat (13) is installed in the upper pressure seat (4), and a first ball (11) corresponding to the ultrasonic blade head (5) is arranged in the upper pressure seat (4); A transmission guide rod (9) is installed at one end of the ultrasonic blade head (5) corresponding to the blade handle (1); the transmission guide rod (9) and the ends of the inner sleeve rod (7) are arranged in the blade handle (1); and a cooperating sleeve (6) corresponding to the transmission guide rod (9) is slidably installed in an internal position of the inner sleeve rod (7); The first ball (11) is located directly above the ultrasonic blade (5); the third ball (15) and the second ball (14) are respectively arranged in the lower dynamic seat (13) and the upper dynamic seat (16); the first ball (11) and the upper pressure seat (4), the third ball (15) and the lower dynamic seat (13), and the second ball (14) and the upper dynamic seat (16) are all slidably connected; the first ball (11), the third ball (15) and the second ball (14) are linearly equidistantly arranged along the length direction of the ultrasonic blade (5); the upper dynamic seat (16) and the upper pressure seat (4) are slidably connected to each other; The dynamic seat (16) and the lower dynamic seat (13) are provided with through-flow grooves (12) corresponding to the second ball (14) and the third ball (15); the upper pressure seat (4) and the bottom cabin (3) are provided with hoses connected to the through-flow grooves (12); a pressure-changing cavity (8) is provided inside the cooperative sleeve (6); a pressure-bearing balloon (10) is installed at an external position of the transmission guide rod (9) corresponding to the internal position of the pressure-changing cavity (8); the pressure-bearing balloon (10) is connected to the hose; and the transmission guide rod (9) and the cooperative sleeve (6) are slidably connected.

2. The synchronous operation blade assembly for cutting and hemostasis based on a multi-degree-of-freedom ultrasonic scalpel according to claim 1 is characterized in that: The diameter of the second rolling ball (14) is smaller than the diameter of the third rolling ball (15), and the tangent horizontal plane of the lower side of the first rolling ball (11) is higher than the upper surface position of the ultrasonic knife head (5).

3. The synchronous operation blade assembly for cutting and hemostasis based on multi-degree-of-freedom ultrasonic scalpel according to claim 1 is characterized in that: The third rolling balls (15) and the second rolling balls (14) are arranged in a staggered manner, and the second rolling balls (14) are located directly above the middle position of two adjacent third rolling balls (15); The tangent horizontal surface on the upper side of the third rolling ball (15) is in contact with the lower surface of the upper dynamic seat (16), and the tangent horizontal surface on the lower side of the second rolling ball (14) is in contact with the upper surface of the lower dynamic seat (13).

4. The synchronous operation blade assembly for cutting and hemostasis based on a multi-degree-of-freedom ultrasonic scalpel according to claim 1 is characterized in that: The cross-sectional width of the pressure-changing cavity (8) decreases in the direction from the bottom cabin (3) to the shank (1), and the cross-sectional width of the pressure-changing cavity (8) close to the bottom cabin (3) is equal to the outer diameter of the pressurized balloon (10).

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