Ultrasonic surgical instrument

Abstract

The utility model relates to the technical field of medical instruments, and discloses an ultrasonic surgical instrument, which comprises a main body, a transducer rotatably mounted in the main body, a power line protruding from the main body, and a sliding joint for rotatably connecting the transducer to the power line, the sliding joint includes: a first coupling attached to the power line, and a second coupling rotatably fixed to the first coupling; the third connecting piece is fixed with the transducer; wherein the second coupling includes a first wire and a second wire, the first wire and the second wire being attached to the transducer by a third coupling. The ultrasonic surgical instrument rotatably connects a transducer to a power line through a sliding joint, the power line protruding from a main body is attached to a first coupling, a second coupling is rotatably fixed to the first coupling, and rotation of the transducer does not cause winding of the power line; the first connecting piece and the second connecting piece are rotationally and fixedly connected, the structure is simple, the cost is low, assembly is not needed, and the risk of poor insertion does not exist.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an ultrasonic surgical instrument. Background Art

[0002] With the development of medical industry, ultrasonic surgical instruments such as ultrasonic scalpels have been widely used in clinical operations and used to cut blood vessels or cell tissues. The rapid vibration of the transducer in the ultrasonic scalpel can cause the cell tissue to denature and coagulate. At this time, the denatured cell tissue is cut to reduce the bleeding of the cell tissue.

[0003] In the prior art, an ultrasonic scalpel consists of a cutter, a transducer, and a power supply. One end of the transducer is fixedly connected to the cutter, while the other end is connected to a power cord in the power supply. During surgery, the angle of the cutter is typically adjusted to match the cutting angle of intraperitoneal tissue. However, when the cutter is rotated, the transducer rotates with it, causing the power cord, which is fixedly connected to the transducer, to rotate as well. This can lead to entanglement of the power cord, compromising surgical efficiency.

[0004] Currently, the anti-entanglement structure commonly used in ultrasonic scalpels is implemented using a male-female plug connection, that is, the male head is fixedly connected to the transducer, and the female head is fixedly connected to the power cord, and the male head can rotate relative to the female head. The disadvantages of this structure are: it requires the use of a pair of parts, the structure is complex, and the cost is high; there is a risk of poor contact when the plug-in structure is not fully in contact, which increases the assembly requirements. Utility Model Content

[0005] The purpose of the utility model is to provide an ultrasonic surgical instrument, which solves the technical problems in the prior art of complex structure and high cost caused by the plug-in anti-winding structure, the risk of poor contact when the plug-in structure is not fully in contact, and increased assembly requirements.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] The utility model provides an ultrasonic surgical instrument, comprising a main body, a transducer rotatably mounted in the main body, a power cord protruding from the main body, and a sliding joint rotatably connecting the transducer to the power cord, wherein the sliding joint comprises: a first coupling member attached to the power cord, a second coupling member rotatably fixed to the first coupling member, and a third coupling member fixed to the transducer; wherein the second coupling member comprises a first wire and a second wire, and the third coupling member comprises a first hole and a second hole, the first wire and the second wire respectively pass through the first hole and the second hole from a radial direction of the third coupling member and are attached to the transducer.

[0008] As a preferred solution of the above ultrasonic surgical instrument, the third connecting member further includes a positive terminal and a negative terminal, and the outer ends of the first wire and the second wire are connected to the positive terminal and the negative terminal respectively.

[0009] As a preferred solution of the above ultrasonic surgical instrument, the third connecting member further includes a first groove and a second groove, and the positive terminal and the negative terminal are respectively arranged in the first groove and the second groove.

[0010] As a preferred solution of the above ultrasonic surgical instrument, the third connecting member further includes a well portion, and the first hole and the second hole are provided on a side wall of the well portion.

[0011] As a preferred solution of the above ultrasonic surgical instrument, the third connecting member further includes an outer flange located distal to the well portion, and outer ends of the first and second wires extend along the well portion and the outer flange.

[0012] As a preferred solution of the above ultrasonic surgical instrument, the first groove and the second groove are provided on the outer flange.

[0013] As a preferred solution of the above ultrasonic surgical instrument, the first hole, the second hole, the first groove and the second groove are spaced apart in the circumferential direction of the third connecting member.

[0014] As a preferred solution of the above ultrasonic surgical instrument, the inner ends of the first wire and the second wire extend along the axial direction of the second connecting member.

[0015] As a preferred solution of the above ultrasonic surgical instrument, it further includes a shaft assembly extending distally from the main body, and an end effector extending distally from the shaft assembly.

[0016] Beneficial effects of the utility model:

[0017] The ultrasonic surgical instrument proposed by the present invention connects the transducer to the power cord protruding from the main body in a rotatable manner through a sliding joint. The sliding joint includes a first connecting member, a second connecting member rotatably fixed to the first connecting member, and a third connecting member fixed to the transducer. The power cord protruding from the main body is attached to the first connecting member, the second connecting member is rotationally fixed to the first connecting member, and the first wire and the second wire of the second connecting member are attached to the transducer through the third connecting member. Since the second connecting member is rotationally fixed to the first connecting member, the rotation of the second connecting member, the third connecting member and the transducer will not cause the power cord attached to the first connecting member to be entangled, thereby avoiding the entanglement of the cable. Moreover, the first connecting member and the second connecting member are rotationally fixedly connected, with a simple structure and low cost. No assembly is required during use, and there is no risk of poor connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the ultrasonic surgical instrument provided by the present utility model;

[0019] Figure 2 This is a partial structural diagram of the ultrasonic surgical instrument provided by the present utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the power cord, sliding joint and transducer provided by the utility model to be assembled;

[0021] Figure 4 This is a schematic structural diagram of the assembly of the sliding joint and the transducer provided by the utility model;

[0022] Figure 5 This is an exploded view of the sliding joint provided by the utility model;

[0023] Figure 6 It is a structural schematic diagram of the third connecting piece provided by the utility model.

[0024] In the figure: 10, main body; 21, shaft assembly; 22, end actuator; 30, transducer; 40, power supply device; 41, power cord; 50, sliding joint; 51, first connecting piece; 52, second connecting piece; 521, first wire; 522, second wire; 53, third connecting piece; 531, positive terminal; 532, negative terminal; 533, well; 5331, first hole; 5332, second hole; 534, outer flange; 5341, first groove; 5342, second groove; 535, retaining ring structure; 5350, plug interface; 60, rotating wheel. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0026] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0028] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0029] like Figure 1-Figure 3 As shown, this embodiment provides an ultrasonic surgical instrument, including a main body 10, a power cord 41, a shaft assembly 21 and an end effector 22. The power cord 41 protrudes from the main body 10 to the outside and is connected to the power supply device 40. The shaft assembly 21 extends from the main body 10 toward the distal side (the side close to the patient when the ultrasonic surgical instrument is in use, that is, the side away from the doctor), and the end effector 22 extends from the shaft assembly 21 toward the distal side.

[0030] The ultrasonic surgical instrument also includes a transducer 30 rotatably mounted within the main body 10 and a sliding joint 50 rotatably connecting the transducer 30 to the power cord 41, the sliding joint 50 including a first coupling 51 attached to the power cord 41, a second coupling 52 rotatably fixed to the first coupling 51, and a third coupling 53 fixed to the transducer 30; wherein the second coupling 52 includes a first wire 521 and a second wire 522, and the first wire 521 and the second wire 522 are attached to the transducer 30 via the third coupling 53.

[0031] The ultrasonic surgical instrument rotatably connects the transducer 30 to the power cord 41 protruding from the main body 10 through a sliding joint 50. The sliding joint 50 includes a first coupling 51, a second coupling 52 rotatably fixed to the first coupling 51, and a third coupling 53 fixed to the transducer 30. The power cord 41 protruding from the main body 10 is attached to the first coupling 51, the second coupling 52 is rotationally fixed to the first coupling 51, and the first wire 521 and the second wire 522 of the second coupling 52 are attached to the transducer 30 through the third coupling 53. Since the second coupling 52 is rotationally fixed to the first coupling 51, the rotation of the second coupling 52, the third coupling 53 and the transducer 30 will not cause the power cord 41 attached to the first coupling 51 to be entangled, thereby avoiding entanglement of the cables. Moreover, the first coupling 51 and the second coupling 52 are rotationally fixedly connected, which has a simple structure and low cost. No assembly is required during use, and there is no risk of poor connection.

[0032] Alternatively, as Figure 4-Figure 6 As shown, the third connecting member 53 includes a first hole 5331 and a second hole 5332, and the first wire 521 and the second wire 522 pass through the first hole 5331 and the second hole 5332 respectively from the radial direction of the third connecting member 53 and are attached to the transducer 30. When the transducer 30 rotates, the second connecting member 52 can be driven to rotate through the third connecting member 53; and the first wire 521 and the second wire 522 pass through the first hole 5331 and the second hole 5332 respectively from the radial direction of the third connecting member 53. When the transducer 30 rotates, there is no risk of the first wire 521 and the second wire 522 falling off.

[0033] Optionally, the third connecting member 53 also includes a positive terminal 531 and a negative terminal 532, and the positive terminal 531 and the negative terminal 532 are electrically connected to the transducer 30 respectively. The outer ends of the first wire 521 and the second wire 522 are connected to the positive terminal 531 and the negative terminal 532 respectively. The design of the positive terminal 531 and the negative terminal 532 realizes the connection between the first wire 521 and the second wire 522, and thus realizes the electrical connection with the transducer 30.

[0034] Optionally, in order to achieve positioning and installation of the positive terminal 531 and the negative terminal 532 , the third connecting member 53 further includes a first groove 5341 and a second groove 5342 , and the positive terminal 531 and the negative terminal 532 are respectively arranged in the first groove 5341 and the second groove 5342 .

[0035] Optionally, the third coupling member 53 further includes a well portion 533, and a first hole 5331 and a second hole 5332 are provided on a sidewall of the well portion 533. By providing the first hole 5331 and the second hole 5332 on the sidewall of the well portion 533, the first wire 521 and the second wire 522 are respectively passed through the first hole 5331 and the second hole 5332 in a radial direction of the third coupling member 53. This facilitates the rotation of the second coupling member 52 by the third coupling member 53 when the transducer 30 rotates, thereby preventing the first wire 521 and the second wire 522 from falling off.

[0036] Furthermore, the third coupling member 53 further includes an outer flange 534 located distally of the well 533. The outer flange 534 is disposed on the outer periphery of the well 533, and the outer ends of the first and second wires 521, 522 extend along the well 533 and the outer flange 534. The outer flange 534, located distally of the well 533, enables the outer ends of the first and second wires 521, 522 to extend along the well 533 and the outer flange 534, thereby providing a certain degree of guidance and position limiting for the first and second wires 521, 522.

[0037] The first groove 5341 and the second groove 5342 are provided on the outer flange 534. The first groove 5341 and the second groove 5342 are provided on the outer flange 534 to facilitate positioning of the positive terminal 531 and the negative terminal 532.

[0038] Optionally, the first hole 5331, the second hole 5332, the first groove 5341, and the second groove 5342 are spaced apart in the circumferential direction of the third coupling member 53. This arrangement allows the first and second wires 521, 522 to extend along the well 533 and the outer flange 534 for a distance before being connected to the positive terminal 531 and the negative terminal 532. This prevents the first and second wires 521, 522 from interfering with the positive terminal 531 and the negative terminal 532, and also avoids the problem of difficulty in bending the first and second wires 521, 522 due to the short distance between the first and second wires 521, 522 and the holes 5331, 5332.

[0039] Optionally, the inner ends of the first wire 521 and the second wire 522 extend along the axial direction of the second connecting member 52, so that the second connecting member 52 rotates around the axial direction of the second connecting member 52 during rotation, thereby avoiding eccentric rotation.

[0040] Optionally, the third connecting member 53 also includes a retaining ring structure 535, which is arranged on the outer periphery of the outer flange 534, and a plug-in interface 5350 for plugging in the positive terminal 531 and the negative terminal 532 is formed between the retaining ring structure 535 and the first groove 5341 and the second groove 5342. The corresponding plug-in interface 5350 facilitates the positive terminal 531 and the negative terminal 532 to be plugged into the first groove 5341 and the second groove 5342, thereby preventing the positive terminal 531 and the negative terminal 532 from disengaging from the first groove 5341 and the second groove 5342 along the radial direction of the retaining ring structure 535.

[0041] In this embodiment, the ultrasonic surgical instrument is an ultrasonic scalpel, the shaft assembly 21 is a scalpel rod, and the end effector 22 is a cutting tool.

[0042] Take ultrasonic scalpel as an example to explain in detail:

[0043] like Figure 1-Figure 3 As shown, the ultrasonic scalpel includes a main body 10, a power cord 41, a knife rod and a cutter. The power cord 41 protrudes outward from the main body 10 and is connected to the power supply device 40. The knife rod extends distally from the main body 10 and is connected to the cutter at the distal end. The cutter extends distally from the shaft assembly 21.

[0044] Optionally, the ultrasonic knife further includes a rotating wheel 60 , which is sleeved on the knife rod. The rotating wheel 60 is configured to drive the knife rod to rotate when the rotating wheel 60 rotates, so as to change the angle of the knife head.

[0045] The ultrasonic surgical instrument also includes a transducer 30 rotatably mounted within the main body 10 and a sliding joint 50 rotatably connecting the transducer 30 to the power cord 41, the sliding joint 50 including a first coupling 51 attached to the power cord 41, a second coupling 52 rotatably fixed to the first coupling 51; and a third coupling 53 fixed to the transducer 30; wherein the second coupling 52 includes a first wire 521 and a second wire 522, and the first wire 521 and the second wire 522 are attached to the transducer 30 via the third coupling 53.

[0046] The ultrasonic surgical instrument rotatably connects the transducer 30 to the power cord 41 protruding from the main body 10 through a sliding joint 50. The sliding joint 50 includes a first coupling 51, a second coupling 52 rotatably fixed to the first coupling 51, and a third coupling 53 fixed to the transducer 30. The power cord 41 protruding from the main body 10 is attached to the first coupling 51, the second coupling 52 is rotationally fixed to the first coupling 51, and the first wire 521 and the second wire 522 of the second coupling 52 are attached to the transducer 30 through the third coupling 53. Since the second coupling 52 is rotationally fixed to the first coupling 51, the rotation of the second coupling 52, the third coupling 53 and the transducer 30 will not cause the power cord 41 attached to the first coupling 51 to be entangled, thereby avoiding entanglement of the cables. Moreover, the first coupling 51 and the second coupling 52 are rotationally fixedly connected, the structure is simple, no assembly is required during use, and there is no risk of poor connection.

[0047] Optionally, a portion of the first wire 521 and the second wire 522 is located inside the second connecting member 52, which portion is the inner end of the first wire 521 and the second wire 522, and a portion extends out of the second connecting member 52, which portion is the outer end of the first wire 521 and the second wire 522. The inner ends of the first wire 521 and the second wire 522 extend along the axial direction of the second connecting member 52, so that the second connecting member 52 rotates around the axis of the second connecting member 52 when rotating, avoiding eccentric rotation.

[0048] Alternatively, as Figure 4-Figure 6 As shown, the third connecting member 53 includes a well portion 533, which is an annular structure. A first hole 5331 and a second hole 5332 are provided on the circumferential side wall of the well portion 533. The first hole 5331 and the second hole 5332 are spaced apart along the circumference of the well portion 533. The first wire 521 and the second wire 522 pass through the first hole 5331 and the second hole 5332 respectively from the radial direction of the well portion 533 and are attached to the transducer 30. When the transducer 30 rotates, the second connecting member 52 can be driven to rotate through the third connecting member 53; and the first wire 521 and the second wire 522 pass through the first hole 5331 and the second hole 5332 respectively from the radial direction of the well portion 533. When the transducer 30 rotates, the second connecting member 52 can be driven to rotate through the third connecting member 53; and the first wire 521 and the second wire 522 pass through the first hole 5331 and the second hole 5332 respectively from the radial direction of the well portion 533. There is no risk of the first wire 521 and the second wire 522 falling off when the transducer 30 rotates.

[0049] Optionally, the third connecting member 53 also includes an outer flange 534, which is also an annular structure. The outer flange 534 and the well portion 533 are coaxially arranged, and the outer flange 534 is located on the outer periphery of the far side of the well portion 533. The outer ends of the first wire 521 and the second wire 522 extend along the circumference of the well portion 533 and the end face of the outer flange 534 to play a certain guiding and limiting role on the first wire 521 and the second wire 522.

[0050] Optionally, the third connecting member 53 also includes a positive terminal 531 and a negative terminal 532, and the positive terminal 531 and the negative terminal 532 are respectively electrically connected to the transducer 30. The outer ends of the first wire 521 and the second wire 522 extend out of the well 533 and are respectively connected to the positive terminal 531 and the negative terminal 532. The design of the positive terminal 531 and the negative terminal 532 realizes the connection between the first wire 521 and the second wire 522, and thus realizes the electrical connection with the transducer 30.

[0051] Optionally, in order to achieve positioning and installation of the positive terminal 531 and the negative terminal 532, a first groove 5341 and a second groove 5342 are circumferentially provided on the outer flange 534 of the third connecting member 53, and the positive terminal 531 and the negative terminal 532 are respectively inserted into the first groove 5341 and the second groove 5342.

[0052] Optionally, the first hole 5331, the second hole 5332, the first groove 5341, and the second groove 5342 are spaced apart in the circumferential direction of the third coupling member 53. This arrangement allows the first and second wires 521, 522 to extend along the well 533 and the outer flange 534 for a distance before being connected to the positive terminal 531 and the negative terminal 532. This prevents the first and second wires 521, 522 from interfering with the positive terminal 531 and the negative terminal 532, and also avoids the problem of difficulty in bending the first and second wires 521, 522 due to the short distance between the first and second wires 521, 522 and the holes 5331, 5332.

[0053] Optionally, the third connecting member 53 also includes a retaining ring structure 535, which is arranged on the outer periphery of the outer flange 534, and a plug-in interface 5350 for plugging the positive terminal 531 and the negative terminal 532 is formed between the retaining ring structure 535 and the first groove 5341 and the second groove 5342. The plug-in interface 5350 facilitates the positive terminal 531 and the negative terminal 532 to be plugged into the first groove 5341 and the second groove 5342, thereby preventing the positive terminal 531 and the negative terminal 532 from detaching from the first groove 5341 and the second groove 5342 along the radial direction of the retaining ring structure 535.

[0054] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An ultrasonic surgical instrument, characterized in that: include: Main body (10); a transducer (30) rotatably mounted within the body (10); a power cord (41) protruding from the main body (10); a sliding joint (50) for rotatably connecting the transducer (30) to the power line (41), the sliding joint (50) comprising: a first coupling member (51) attached to the power line (41), and a second coupling member (52) rotatably fixed to the first coupling member (51); and a third connecting member (53) fixed to the transducer (30); The second connecting member (52) includes a first wire (521) and a second wire (522), and the third connecting member (53) includes a first hole (5331) and a second hole (5332), and the first wire (521) and the second wire (522) respectively pass through the first hole (5331) and the second hole (5332) in the radial direction of the third connecting member (53) and are attached to the transducer (30).

2. The ultrasonic surgical instrument according to claim 1, wherein: The third connecting member (53) further includes a positive terminal (531) and a negative terminal (532), and the outer ends of the first wire (521) and the second wire (522) are connected to the positive terminal (531) and the negative terminal (532), respectively.

3. The ultrasonic surgical instrument according to claim 2, wherein: The third connecting member (53) further comprises a first groove (5341) and a second groove (5342), wherein the positive terminal (531) and the negative terminal (532) are respectively arranged in the first groove (5341) and the second groove (5342).

4. The ultrasonic surgical instrument according to claim 3, wherein: The third connecting member (53) further comprises a well portion (533), and the first hole (5331) and the second hole (5332) are arranged on a side wall of the well portion (533).

5. The ultrasonic surgical instrument according to claim 4, characterized in that The third connecting member (53) further includes an outer flange (534) located on the far side of the well portion (533), and the outer ends of the first wire (521) and the second wire (522) extend along the well portion (533) and the outer flange (534).

6. The ultrasonic surgical instrument according to claim 5, wherein: The first groove (5341) and the second groove (5342) are provided on the outer flange (534).

7. The ultrasonic surgical instrument according to claim 6, wherein: The first hole (5331), the second hole (5332), the first groove (5341) and the second groove (5342) are spaced apart in the circumferential direction of the third connecting member (53).

8. The ultrasonic surgical instrument according to claim 1, wherein: The inner ends of the first conductive wire (521) and the second conductive wire (522) extend along the axial direction of the second connecting member (52).

9. The ultrasonic surgical instrument according to any one of claims 1 to 8, characterized in that: The invention also includes a shaft assembly (21) extending distally from the body (10), and an end effector (22) extending distally from the shaft assembly (21).

Images