Ultrasonic clamp holder and ultrasonic surgical instrument thereof

Abstract

The utility model provides an ultrasonic clamp holder. The ultrasonic clamp holder comprises an ultrasonic knife and a clamping arm arranged on the outer side of the ultrasonic knife in a sleeving mode. A gripper arm is pivotable relative to the ultrasonic blade to effect closing and opening of the gripper. And the rear part of the clamping arm is provided with two arc-shaped block bodies which are oppositely arranged. And the front part of the clamping device is a strip-shaped block body. The long-strip-shaped block body extends forwards from the arc-shaped block bodies, and the long-strip-shaped block body protrudes out of the tops connected with the two arc-shaped block bodies. The maximum thickness of the long-strip-shaped block body is 1.5-2 times of the thickness of the top connecting the two arc-shaped block bodies. And when the clamping arm and the ultrasonic knife are in a closed state, the maximum size after the clamping arm and the ultrasonic knife are overlapped is smaller than or equal to 3.5 mm. The size of the operation end of the holder is small, so that the holder can adapt to ultrasonic surgery of small-size patients, such as children.

Description

Technical Field

[0001] This application belongs to the field of medical device technology, and more specifically, relates to an ultrasonic clamp and its ultrasonic surgical instrument. Background Technology

[0002] The ultrasonic clamp, as the actuator of an ultrasonic surgical system, plays a crucial role in the surgical process. Its working principle involves converting electrical energy into mechanical vibration energy through the piezoelectric effect and transmitting it to the front end, causing the ultrasonic scalpel to vibrate, enabling the cutting and coagulation of soft tissue. In practical applications, due to individual differences in patient age, physique, and other factors, conventional ultrasonic clamps may not be suitable for the size of the surgical site, causing inconvenience for the surgeon and sometimes resulting in larger wounds. This directly affects the surgeon's efficiency and surgical outcome. Utility Model Content

[0003] The purpose of this application is to provide an ultrasonic clamp and an ultrasonic surgical instrument including the same, so as to solve the technical problem of adapting ultrasonic surgery to patients with smaller body size in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0005] In one aspect, an ultrasonic clamp is provided, comprising an ultrasonic scalpel and a clamping arm sleeved on the ultrasonic scalpel and pivotable relative thereto. The clamp is capable of closing and opening via the ultrasonic scalpel and the clamping arm. The rear portion of the clamping arm has two opposing arc-shaped blocks, and the front portion of the clamp presents an elongated block extending forward from the arc-shaped blocks. The elongated block protrudes from the top connecting the two arc-shaped blocks, and the maximum thickness of the elongated block is 1.5-2 times the thickness of the top connecting the two arc-shaped blocks. The maximum combined size of the clamping arm and the ultrasonic scalpel in the closed state is less than or equal to 3.5 mm.

[0006] In another aspect, an ultrasonic surgical instrument is provided, which includes the aforementioned ultrasonic clamp, and the ultrasonic clamp is located at the front end of the ultrasonic surgical instrument.

[0007] The advantages of the ultrasonic clamp and ultrasonic surgical instrument including the ultrasonic clamp provided in this application are as follows:

[0008] 1. The surgical end of the clamp in this application is small in size, resulting in a smaller wound on the human body surface, and can be adapted to ultrasound surgery on small patients, such as children.

[0009] 2. The ultrasonic surgical instrument of this application can be combined with existing ultrasonic handpieces and other devices, thereby improving the utilization rate. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a perspective view of an ultrasonic clamp provided in one embodiment of this application.

[0012] Figure 2 for Figure 1 A front view of the ultrasonic clamp.

[0013] Figure 3 for Figure 1 Diagram of the closed state of the ultrasonic clamp.

[0014] Figure 4 An exploded view of the clamping arm and gasket of an ultrasonic clamp provided in one embodiment of this application.

[0015] Figure 5 An ultrasonic surgical instrument provided as an embodiment of this application.

[0016] Figure 6 for Figure 5 A perspective view of the blade assembly of an ultrasonic surgical instrument.

[0017] Figure 7 for Figure 6 An exploded view of the tool holder assembly.

[0018] Figure 8 for Figure 7 The inner tube and its exploded view.

[0019] Figure 9 for Figure 7 The outer tube and its exploded view. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. The term "front" refers to the side closer to the patient, and "rear" refers to the side closer to the doctor. The term "far" refers to the side closer to the patient, and "near" refers to the side closer to the doctor.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of this utility model.

[0024] In the following description, suffixes such as "circuit," "component," "assembly," or "unit" are used only for the purpose of describing this utility model and have no specific meaning in themselves. Therefore, they can be used in combination.

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] One embodiment of this application provides an ultrasonic clamp. For example... Figure 1-4As shown, the ultrasonic clamp includes a clamping arm 1 and an ultrasonic scalpel 2. The ultrasonic scalpel has a tissue cutting surface. The clamping arm 1 is fitted onto the outside of the ultrasonic scalpel 2. Under the action of external force, the clamping arm 1 can pivot relative to the ultrasonic scalpel 2 to achieve the closing and opening of the clamp, thereby performing surgical operations on the tissue, such as clamping, cutting, and coagulation. The clamping arm is made of a single piece of metal acceptable for medical or surgical procedures, such as stainless steel or titanium alloy. The ultrasonic scalpel can be made of titanium alloy.

[0027] The rear of the clamping arm 1 has two opposing arc-shaped blocks 11. The lower part of each of these arc-shaped blocks 11 has a protruding cylinder, and the upper part of each block has two circular holes. Through these cylinders and holes, the clamping arm 1 can be hinged to other components. The clamping arm 1 can then pivot relative to the ultrasonic scalpel 2 as the other hinged components slide, selectively clamping the tissue between the clamping arm 1 and the ultrasonic scalpel 2.

[0028] The front of the clamping arm 1 features an elongated block 12 that extends forward from the arc-shaped block 11. The elongated block 12 protrudes beyond or exceeds the top 13 connecting the two arc-shaped blocks 11 by a certain height. To ensure and enhance the clamping strength, i.e., clamping force, of the clamping arm 1 relative to the ultrasonic scalpel 2, the height of the elongated block 12, which was originally flush with the top of the arc-shaped block 11, is increased by a certain dimension. The maximum thickness of the elongated block 12 is 1.5-2 times the thickness 13 of the top connecting the two arc-shaped blocks 11. The top of the elongated block 12 has a smooth convex surface.

[0029] The overall length of the clamping arm 1 is 12 mm, and the width of the elongated block 12 is 2 mm. The clamping arm is approximately the same width as the elongated block 12, about 2 mm. The outer diameter of the circle formed by the two arc-shaped blocks 11 is less than 3.5 mm. The maximum combined size of the clamping arm 1 and the ultrasonic scalpel 2 in the closed state is less than or equal to 3.5 mm.

[0030] The clamping arm 1 is also equipped with a pad 3 that faces the ultrasonic scalpel 2 and rotates with it. For example... Figure 4As shown, the pad 3 is roughly I-shaped and can be installed into the corresponding T-shaped recess on the clamping arm. For example, it can be achieved using snap-fit ​​or screw-fit methods, facilitating the replacement of the pad 3 and improving the assembly efficiency of the clamp. Alternatively, the pad 3 can also be adhered to the clamping arm 1 using adhesive. Preferably, the surface of the pad 3 that contacts the tissue has a texture, such as serrations, to reduce slippage when clamping tissue and increase the clamping force on the tissue being cut, thus enabling better surgical procedures. The clamping pad 3 is made of a material such as PTFE or similar tetrafluoroethylene synthetic fluoropolymer, with or without filler materials such as glass, metal, and / or carbon. Additionally, the clamping pad 3 may include a high-temperature resistant material to prevent melting.

[0031] When the clamping arm 1 with the gasket 3 and the ultrasonic scalpel 2 are in the closed state, the maximum combined size of the three components is less than or equal to 3.5 mm. This allows the ultrasonic clamp to pass smoothly through the inner diameter of a 3 mm trocar, enabling surgical procedures within the cavity. Surgeries performed using the aforementioned ultrasonic clamp are suitable for smaller individuals, such as children, and generally require smaller incisions in the body.

[0032] An inclined transition portion 14 is provided between the elongated block 12 of the clamping arm 1 and the top 13 connecting the two arc-shaped blocks 11. This inclined transition portion 14 can be curved or sloping. It is preferred to be curved, partly for aesthetic reasons and partly for human-friendly convenience, avoiding damage to tissues or scratches to instruments due to sharp angles.

[0033] The front end of the clamping arm is chamfered at 15 degrees. The chamfered at 15 degrees prevents damage to the tissue when the front end comes into contact with the tissue and makes the field of vision clearer.

[0034] The clamping arm 1 is curved in an arc shape, which matches the curved shape of the ultrasonic scalpel 2. Therefore, the pads set on the inside of the clamping arm 1 are also curved to adapt to the shape of the clamping arm.

[0035] Another embodiment of this application provides an ultrasonic surgical instrument. For example... Figure 5-8 As shown, the ultrasonic surgical instrument includes the ultrasonic clamp described above, located at the front end of the ultrasonic surgical instrument. This ultrasonic surgical instrument employs all the technical solutions of all the above embodiments, and therefore possesses at least the beneficial effects brought by the technical solutions of the above embodiments. Further details are omitted here. The ultrasonic scalpel 2 and its rear-mounted ultrasonic guide rod 20 are integrally formed of metal or can be fixed together by installation. The installation method is, for example, a threaded connection or welding. The rear part of the ultrasonic guide rod 20 is directly connected to the ultrasonic transducer via threads for acoustic transmission. The ultrasonic transducer is electrically and signal-connected to the ultrasonic main unit, enabling the ultrasonic scalpel to transmit high-frequency ultrasonic vibrations from the transducer.

[0036] like Figure 7 As shown, the ultrasonic surgical instrument includes a scalpel assembly. This assembly includes a coaxially arranged ultrasonic waveguide 20, an inner tube 22 sleeved on the ultrasonic waveguide 20 and capable of being pushed, pulled, and slidable, and an outer tube 21 sleeved on the inner tube 22. A clamping arm 1 has two positions, each hinged to the inner tube 22 and the outer tube 21. Two circular holes at the upper part of the two arc-shaped blocks 11 at the rear of the clamping arm 1 are hinged to two cylindrical pins / pillars on the outer tube 21, forming a pivot center. Two cylindrical pins at the lower part of the two arc-shaped blocks 11 at the rear of the clamping arm 1 are hinged within axially elongated grooves in the inner tube 22, and the clamping arm rotates around the pivot center via the linear sliding of the inner tube. The inner tube 22, the outer tube 21, and the rear end of the waveguide 20 are fixed to an ultrasonic handle. The ultrasonic handle includes a handle body, an ultrasonic transducer, and a trigger, etc. The trigger is located on the handle and drives the inner tube 22. The user can slide the inner tube 22 by rotating the trigger.

[0037] like Figure 9 As shown, the outer tube 21 includes a small-diameter front tube and a large-diameter rear tube, which are fixed together. A beveled transition is also provided between the front and rear tubes of the outer tube 21. Figure 8 As shown, the inner tube 22 also includes a small-diameter front tube and a large-diameter rear tube. The front and rear tubes of the inner tube 22 are fixed and have a beveled transition between them. The fixing methods of the outer tube 21 and the front and rear tubes of the inner tube 22 can be welding, plugging, or threading, etc.

[0038] The outer diameter of the front tube of the outer tube 21 is less than or equal to 3.5 mm, and the length of the small-diameter front tube of the outer tube 21 is sufficient to pass through the nominal inner diameter of the trocar of the 3 mm and enter the cavity of the human body for surgery.

[0039] The ultrasonic handpiece of this application is existing. By combining the ultrasonic clamp and inner and outer sleeves of this application with the handpiece assembly and transducer assembly in the existing ultrasonic handpiece, the utilization rate of existing resources can be improved, and the costs of redesign and mold opening can be eliminated.

[0040] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An ultrasonic clamp, characterized in that, include: Ultrasonic scalpel; A clamping arm, sleeved on the outside of the ultrasonic scalpel and pivotable relative to the ultrasonic scalpel, enables the clamp to close and open. The rear of the clamping arm has two opposing arc-shaped blocks, and the front of the clamp presents a long strip-shaped block that extends forward from the arc-shaped blocks. The long strip-shaped block protrudes from the top connecting the two arc-shaped blocks, and the maximum thickness of the long strip-shaped block is 1.5-2 times the thickness of the top. When the clamping arm and the ultrasonic scalpel are in the closed state, the maximum size of the two combined is less than or equal to 3.5 mm.

2. The ultrasonic clamp as described in claim 1, characterized in that, An inclined transition section is provided between the elongated block of the clamping arm and the top.

3. The ultrasonic clamp as described in claim 1 or 2, characterized in that, The front end of the clamping arm is chamfered.

4. The ultrasonic clamp as described in claim 1, characterized in that, The clamping arm is also provided with a pad, and the maximum size of the clamping arm with the pad and the ultrasonic scalpel when they are in the closed state is less than or equal to 3.5 mm.

5. The ultrasonic clamp as described in any one of claims 2 to 4, characterized in that, The overall length of the clamping arm is 12mm, and the width of the elongated block is 2mm.

6. The ultrasonic clamp as described in any one of claims 2 to 4, characterized in that, The clamping arm is curved in an arc shape.

7. The ultrasonic clamp as described in any one of claims 2 to 4, characterized in that, The outer diameter of the circle formed by the two arc-shaped blocks is less than 3.5 mm.

8. An ultrasonic surgical instrument, characterized in that, The ultrasonic clamp is included as described in any one of claims 1 to 7, wherein the ultrasonic clamp is located at the front end of the ultrasonic surgical instrument.

9. The ultrasonic surgical instrument as described in claim 8, characterized in that, The ultrasonic surgical instrument includes an inner tube that can be pushed, pulled, and slid, and an outer tube sleeved on the inner tube. The clamping arms are respectively hinged to the inner tube and the outer tube at two positions. The outer diameter of the front end of the outer tube is less than or equal to 3.5 mm.

10. The ultrasonic surgical instrument as described in claim 9, characterized in that, Both the outer tube and the inner tube include a small-diameter front tube and a large-diameter rear tube. The front and rear tubes of the outer tube are fixed and have a sloped transition between them. The front and rear tubes of the inner tube are also fixed and have a sloped transition between them.

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