A customizable contoured surgical instrument

Abstract

The utility model discloses a kind of self-defining plastic surgery instruments, it includes handle part and operating part, the handle part includes the first handle and second handle of shaft connection together, the operating part includes the first operating member and second operating member of shaft connection together;Wherein, memory alloy piece is connected between the first handle and first operating member;Second handle and second operating member are connected with metal pipe, and flexible transmission member that handle part control moment is transmitted to operating part is arranged in the metal pipe.The utility model is set through memory alloy piece, under the premise of ensuring that moment is stably transmitted from handle part to operating part, guaranteeing operating part movement linear continuity, operator can also according to actual demand, instrument is freely shaped into various shapes suitable for operation environment, improve operating convenience.User can also be adapted to different use scenarios by replacing different operating part, with universality, reach the effect of one handle multi-use.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a customizable surgical instrument that can be adapted to surgical instruments such as forceps, scissors, tweezers, etc. Background Technology

[0002] Surgical instruments, such as occlusion forceps, are commonly used medical devices in surgery. They can block blood flow in blood vessels to prevent excessive blood loss, improve the patient's blood circulation during surgery, and increase the success rate of the operation. However, depending on the surgical environment, most current occlusion forceps have different specific structures. For example, occlusion forceps used for arteries, veins, the pleural cavity, and the lungs vary in shape and are not interchangeable. This results in a large number and variety of surgical instruments during surgery. Each surgery requires the rational configuration of surgical instruments according to the surgical requirements, which not only increases the difficulty of the surgery but also reduces medical costs.

[0003] Besides the aforementioned drawbacks of limited universality, current clamping forceps also suffer from a series of defects due to their rigid structural connections and rigid transmission of control torque. For example, Chinese patent ZL201320684993.X discloses a minimally invasive ascending aortic clamping forceps, and similar patent ZL200920218143.4 discloses a thoracoscopic lateral angle vessel clamping forceps. Both employ an integrated hinged structure of the handle and the clamp head, with the handle or clamp head designed into specific shapes according to actual needs. In this structure, the torque from the handle directly acts on the state control of the clamp head, failing to buffer the control torque and making it difficult to actively change the shape of the clamping forceps to adapt to specific surgical needs. This places high demands on the surgeon's ability to control the clamping forceps with precise force and angle. Therefore, developing a surgical instrument handle that is universally applicable, structurally simple, and easy to operate would be of great practical significance. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a customizable surgical instrument that is simple in structure, easy to operate, and suitable for the operating heads of surgical instruments such as forceps, scissors, and tweezers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A customizable shaping surgical instrument includes a handle portion and an operating portion that moves under the control of the handle portion. The handle portion includes a first handle and a second handle connected together by shafts. The operating portion includes a first operating element and a second operating element connected together by shafts. A shape memory alloy element is connected between the first handle and the first operating element. A metal tube is connected between the second handle and the second operating element, and a flexible transmission element is disposed inside the metal tube.

[0007] Furthermore, the shape memory alloy component has connecting posts at both ends, and the shape memory alloy component is connected to the first handle and the first operating component through the connecting posts and corresponding pins.

[0008] Furthermore, the connecting post is riveted to both ends of the shape memory alloy component.

[0009] Alternatively: the two ends of the shape memory alloy component are respectively engaged with the first handle and the first operating component.

[0010] Preferably, the shape memory alloy part is a cylindrical shape memory alloy rod or a flat rectangular shape memory alloy strip.

[0011] According to one embodiment: the second handle is fixedly connected to a guide sleeve; one end of the flexible transmission member extends into the guide sleeve and is connected to a connector at the end of the second handle, and the other end is connected to a guide connector located in the first operating member, and the guide connector is connected to the second operating member through a transmission connecting piece.

[0012] Preferably, the surgical instrument further includes a spring assembly sleeved on the flexible transmission member and which keeps the operating part in an open state when the flexible transmission member is not subjected to force.

[0013] Furthermore, the spring assembly includes a fixed tube disposed between the metal tube and the first operating member, and a spring located inside the fixed tube. The spring is sleeved on the flexible transmission member, and the end of the spring near the first operating member is in contact with the guide connector.

[0014] According to one embodiment: the tube body of the metal tube is formed by connecting several tube units end to end, wherein one end of each tube unit is a convex surface and the other end is a concave surface that fits into the convex surface.

[0015] Furthermore: the operating part is a forceps head, scissor head, or forceps head; the surgical instrument is a hemostat, surgical scissors, or surgical forceps.

[0016] Preferably, the handle is made of shape memory alloy; the metal tube is a gooseneck tube; the flexible connector is a metal rope; and the transmission connector is arc-shaped.

[0017] The customizable surgical instrument described in this invention, through the use of a shape-memory alloy component between the operating part and the handle, achieves smooth torque transmission from the handle to the operating part and ensures the linear continuity of the operating part's movement. Furthermore, the operator can arbitrarily bend the instrument in two-dimensional plane or three-dimensional space according to actual needs, freely shaping it into various forms suitable for the surgical environment, thus improving operational convenience. Moreover, this invention can be adapted to different usage scenarios by replacing different operating parts, possessing universal versatility and achieving a multi-purpose effect with a single handle. Attached Figure Description

[0018] Figure 1 An exploded view of the customizable shaping surgical instrument of this invention is shown.

[0019] Figure 2 This diagram shows the assembled structure of the customizable shaping surgical instrument of this invention.

[0020] Figure 3 An exploded structural diagram of another embodiment of the customizable shaping surgical instrument is shown;

[0021] Figure 4 It shows Figure 1 A partial sectional view of the connection structure of the surgical instrument shown when the operating part is open;

[0022] Figure 5 It shows Figure 3 A partial sectional view of the connection structure of the surgical instrument shown when the operating part is open;

[0023] Figure 6 An exploded view of the various tube units of the metal tube described in this utility model is shown; and

[0024] Figure 7 A schematic diagram of the connection structure of the assembled tube units of the metal tube described in this utility model is shown. Detailed Implementation

[0025] This invention provides a surgical instrument comprising a handle and an operating part operably connected to each other via a shape memory alloy component and a flexible transmission component. The operating part can be a common operating part found in surgical instruments such as forceps, scissors, or shears. In the following description, this invention will use a vascular occlusion forceps as an example for detailed explanation.

[0026] like Figures 1-5As shown, the vascular occlusion forceps includes a handle portion and a forceps head operating portion that operates under the control of the handle portion. Specifically, the handle portion includes a first handle 3 and a second handle 4 connected by, for example, a pin 15 shaft, and the forceps head includes a first forceps head 1 and a second forceps head 2 connected together by, for example, a pin 15 shaft. A shape memory alloy component 13 is connected between the first handle 3 and the first forceps head 1. Specifically, the shape memory alloy component 13 can be connected to the first handle 3 and the first forceps head 1 respectively via corresponding pins 15 through connecting posts 14 located at both ends. The connecting posts 14 can be riveted to both ends of the shape memory alloy component 13 to avoid shearing force on the shape memory alloy component 13. Alternatively, as... Figure 3 and Figure 5 As shown, the shape memory alloy part 13 can also be directly snapped into the corresponding slots 301 and 101 on the first handle 3 and the first pliers head 1, and fixed by corresponding pins. In particular, the shape memory alloy part 13 is formed of shape memory alloy material, such as nickel-titanium alloy material. It can be a cylindrical strip shape memory alloy rod, so as to be arbitrarily bent in three-dimensional space for operation; or, the shape memory alloy part 13 can also be a flat cuboid shape memory alloy strip, so as to facilitate arbitrary bending operation in two-dimensional plane.

[0027] A flexible metal tube 6 connects the second handle 4 and the second clamp head 2, and a flexible transmission element 5 is provided inside the metal tube 6 to transmit the control torque of the handle to the clamp head at the front end. Thus, the shape memory alloy component 13 located between the first handle 3 and the first clamp head 1 helps maintain the overall structure and shape of the vascular occlusion forceps, while the relative position of the handle and the clamp jaws can be arbitrarily adjusted by the support of the metal tube 6. The flexible transmission element 5 is responsible for transmitting the control torque of the handle to the clamp jaws. When the second handle 4 applies an external force to the first handle 3, the rotational torque is transmitted to the second clamp head 2 through the flexible transmission element 5, thereby causing the second clamp head 2 to close or open relative to the first clamp head 1. Furthermore, the flexible transmission element 5 can change with the position and shape of the metal tube without affecting the transmission effect of the control torque; the clamp jaws formed by the clamp head can be arbitrarily changed into various shapes through the metal tube 6 according to the needs of the medical environment, making it not only convenient to use and operate, but also well-suited to different surgical environments.

[0028] To ensure the reliability of instrument shape changes and the stability of control torque transmission during operation, in this invention, the second handle 4 is fixedly connected to a guide sleeve 8. One end of the flexible transmission member 5 extends into the guide sleeve 8 and is connected to a ball joint 7 at the end of the second handle 4. The other end of the flexible transmission member 5 is connected to a guide joint 9 located inside the first clamp head 1. The guide joint 9 is connected to the second clamp head 2 via a transmission connecting piece 10. That is, both ends of the transmission connecting piece 10 are connected to the guide joint 9 and the second clamp head 2, respectively. The flexible transmission component 5 forms a transmission connection between the second handle 4 and the second clamp head 2. This, combined with the action of the guide sleeve 8, ensures the smoothness and guiding transition of the flexible transmission component 5 when transmitting torque from the second handle 4 to the second clamp head 2. Simultaneously, the guide connector 9 located within the first clamp head 1 is subjected to the torque of the flexible transmission component 5, moving smoothly and transmitting this torque to the second clamp head 2 through the connected transmission connector 10. This not only provides effective buffering but also ensures the linear smoothness of the opening and closing of the second clamp head 2, contributing to the reliability of the vascular occlusion forceps.

[0029] Furthermore, the vascular clamp may also include a spring assembly sleeved on the flexible transmission member 5, which keeps the clamp head in an open state when the flexible transmission member 5 is not under force. Specifically, the spring assembly may include a fixed tube 11 connected between the metal tube 6 and the first clamp head 1, and a spring 12 located within the fixed tube 11. The spring 12 is sleeved on the flexible transmission member 5, and the end of the spring 12 near the first clamp head 1 is in contact with the guide connector 9. Thus, when the flexible transmission member 5 is not under control torque, the guide connector 9 is always in its original position close to the second clamp head 2 under the action of the spring 12. At this time, the transmission connecting piece 10 does not move, and the second clamp head 2 is opened to its maximum relative to the first clamp head 1. At this time, the user can achieve the clamp head closing process by applying torque by gripping the handle, further reducing the difficulty of operating the vascular clamp and making the operation more portable and quick.

[0030] In the specific implementation of this utility model, some key components can be selected according to actual needs. For example, in addition to the commonly used curved horizontal handle in the prior art, in this utility model, the handle can also be a parallel handle that extends backward relative to the shape memory alloy part, making it easier to operate. Furthermore, the handle part is preferably also made of shape memory alloy material, such as nickel-titanium alloy, so that it can be restored to its original state after high-temperature sterilization. The transmission connecting piece 10 can adopt an arc-shaped structure, which can effectively ensure the linear continuity of the movement of the second clamping head 2 relative to the first clamping head 1. The metal tube 6 can adopt a multi-tube interlocking structure, such as... Figures 6-7 As shown, the metal tube 6 is composed of several tube units 601 connected end-to-end. Each tube unit 601 has a convex surface at one end and a concave surface at the other end that fits into the convex surface. This ensures both the freedom of bending and prevents radial shrinkage deformation under stress. Furthermore, the metal tube 6 can also be a gooseneck tube as needed. In this invention, the flexible transmission component 5 can be a metal rope, which, in conjunction with the metal tube 6 with the above-described structure, ensures a stable and reliable shape between the handle and the clamp operating part. This not only provides excellent support for changes in the clamp head position but also ensures that the overall shape of the vascular clamp remains unchanged when the metal rope transmits torque, thus improving the reliability of use.

[0031] Compared with traditional surgical instruments, this invention, through the design of shape memory alloy parts, allows users to shape the surgical instrument into various forms that adapt to the actual operating environment, improving the user's ease of operation. Furthermore, this invention can be adapted to different usage scenarios by replacing different operating parts, possessing universality and achieving the effect of one handle for multiple uses.

[0032] This utility model has been described in detail through preferred embodiments. However, variations and additions to the embodiments will be apparent to those skilled in the art upon careful reading of the foregoing. The applicant intends that all such variations and additions fall within the scope of the claims of this utility model. The terminology used herein is merely illustrative of specific embodiments and is not intended to limit the scope of this utility model. Unless otherwise defined, all terms used herein (including technical and scientific terms) are as understood by one of ordinary skill in the art to which this utility model pertains. Any modifications and improvements to this product, or substitutions and uses of similar or analogous substances within the scope or range of this patent, are within the scope of protection of this utility model patent.

Claims

1. A customizable shaping surgical instrument, comprising a handle and an operating part that moves under the control of the handle, characterized in that: The handle portion includes a first handle and a second handle connected together by shafts, and the operating portion includes a first operating member and a second operating member connected together by shafts; wherein, a shape memory alloy member is connected between the first handle and the first operating member; a metal tube is connected between the second handle and the second operating member, and a flexible transmission member is provided inside the metal tube.

2. The customizable contoured surgical instrument of claim 1, wherein: The shape memory alloy component has connecting posts at both ends, and the shape memory alloy component is connected to the first handle and the first operating component through the connecting posts and corresponding pins; or, the two ends of the shape memory alloy component are respectively engaged with the first handle and the first operating component.

3. The customizable contoured surgical instrument of claim 2, wherein: The connecting posts are riveted to both ends of the shape memory alloy component.

4. The customizable contoured surgical instrument of claim 1, wherein: The memory alloy component is a cylindrical memory alloy rod or a flat rectangular memory alloy strip.

5. The customizable contoured surgical instrument of claim 1, wherein: The second handle is fixedly connected to a guide sleeve; one end of the flexible transmission member extends into the guide sleeve and is connected to the connector at the end of the second handle, and the other end is connected to the guide connector located in the first operating member, and the guide connector is connected to the second operating member through a transmission connecting piece.

6. The customizable contoured surgical instrument of claim 5, wherein: The surgical instrument also includes a spring assembly sleeved on the flexible transmission member and which keeps the operating part in an open state when the flexible transmission member is not subjected to force.

7. The customizable contoured surgical instrument of claim 6, wherein: The spring assembly includes a fixed tube disposed between the metal tube and the first operating member, and a spring located inside the fixed tube. The spring is sleeved on the flexible transmission member, and the end of the spring near the first operating member is in contact with the guide connector.

8. The customizable shaping surgical instrument according to any one of claims 1-7, characterized in that: The metal tube body is formed by connecting several tube units end to end. Each tube unit has a convex surface at one end and a concave surface at the other end that fits into the convex surface.

9. The customizable contoured surgical instrument of any of claims 1-7, wherein: The operating part is a forceps head, scissor head, or tweezers head; the surgical instrument is a hemostat, surgical scissors, or surgical tweezers.

10. The customizable contoured surgical instrument of any of claims 5-7, wherein: The handle is made of shape memory alloy; the metal tube is a gooseneck tube; the flexible transmission component is a metal rope; and the transmission connecting piece is arc-shaped.

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