A bending handle of a surgical instrument and an endoscopic surgical instrument

Abstract

The utility model provides a kind of bending handle of surgical instrument and a kind of surgical instrument under endoscope, belong to medical instrument field, for solving the problem of complex structure of adjusting assembly of handle in prior art, it includes handle body, rotating piece, adjusting handle and two traction guide wire, provide rotating piece is set to include rotating column, and there is flange on the outside of rotating column integrally formed, first fixing piece is integrally formed on flange, and rotating shaft hole for being connected with rotating shaft is provided on rotating column, to this rotating piece injection molding etc. Mode of processing is formed once, and after processing and forming, other connecting components can be assembled bending handle without being connected on it by bonding or welding etc. Mode, reduce the number of parts of bending handle, reduce the overall manufacturing cost of handle, and then reduce the medical expenses of patient.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, and in particular relates to a bending handle for a surgical instrument and an endoscopic surgical instrument. Background Technology

[0002] Endoscopic submucosal dissection (ESD), a minimally invasive treatment technique, involves using specialized surgical instruments such as a high-frequency electrosurgical unit under endoscopic guidance to peel away the lesion layer by layer from the underlying normal submucosa, thereby achieving en bloc resection of the diseased tissue. With its significant advantages of minimal trauma, less bleeding, and rapid postoperative recovery, this technique has become the preferred treatment for early-stage gastrointestinal mucosal cancer and benign submucosal tumors. Surgical instruments play a crucial role in ESD procedures. Effective tissue traction not only clearly exposes the uncut area for precise electrosurgical operation but also significantly improves the safety, efficiency, and ease of operation of the procedure.

[0003] Surgical instruments typically have traction clamps for pulling tissue or electrocautery for cutting diseased tissue at their distal end, as well as adjustable bending components for changing the spatial position of the traction clamps. At the proximal end of the surgical instrument, i.e., on the handle, there is usually an adjustment component for moving the adjustable bending component. The adjustment component is usually connected to the adjustable bending component via two spaced traction wires. When the adjustment component moves, it moves one traction wire toward the distal end of the surgical instrument and the other traction wire toward the proximal end of the surgical instrument, so as to use the adjustable bending component to change the spatial position of the traction clamps to facilitate the corresponding surgical operations on the tissue.

[0004] Most existing adjustment components have relatively complex structures, which leads to excessively high individual manufacturing costs for surgical instrument components. On the other hand, the assembly difficulty is also increased, which increases the overall manufacturing cost of the surgical instrument handle, and consequently increases the medical expenses for patients. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a bending handle for a surgical instrument and an endoscopic surgical instrument to solve the problem of the complex structure of the adjustment component of the handle in the prior art.

[0006] To achieve the above and other related objectives, this utility model provides a bending adjustment handle for a surgical instrument, comprising: a handle body, a rotating component, an adjustment handle, and two traction wires; a rotating shaft is provided in the inner cavity of the handle body; the rotating component includes a rotating column, a flange integrally formed on the outer side of the rotating column, and a first fixing component integrally formed on the flange for connecting to the proximal ends of the two traction wires; the rotating column is provided with a rotating shaft hole for rotatably connecting with the rotating shaft; the adjustment handle is connected to the rotating component, and the adjustment handle portion extends to the outer side of the handle body; the adjustment handle is used to drive the rotating component to rotate relative to the rotating shaft.

[0007] Optionally, the handle body and the flange are integrally formed.

[0008] Optionally, a pivot hole is provided at each end of the rotating column, and a fixing hole is also provided on the rotating column, with the fixing hole communicating with at least one pivot hole; a connecting post for connecting with the fixing hole is provided at one end of the adjusting handle that extends into the handle cavity.

[0009] Optionally, the connecting column can be a square structure.

[0010] Optionally, a first fixing member is provided on the front sidewall and the rear sidewall of the flange, and the first fixing member is provided in a one-to-one correspondence with the traction wire; the first fixing member is an L-shaped structure.

[0011] Optionally, two first limiting members are provided on the outer side of the rotating column, the flange is located between the two first limiting members, and there is a gap between the two first limiting members and the outer side wall of the flange.

[0012] Optionally, a connector is provided at the proximal end of the traction wire, and the proximal end of the traction wire has a ring-shaped structure at the proximal end of the connector for fitting onto the first fixing member.

[0013] Optionally, a second limiting member is provided on the front sidewall and the rear sidewall of the flange, and the second limiting member is used to abut against the distal end of the connector.

[0014] Optionally, the distance between the second limiting member and the outer wall of the rotating column is less than the diameter of the second limiting member but greater than the diameter of the traction wire.

[0015] On the other hand, this utility model also provides an endoscopic surgical instrument, including an adjustable bending assembly, a catheter for accommodating a traction wire, and an adjustable bending handle as described above for a surgical instrument. The proximal end of the catheter is connected to the handle body, and the distal end is connected to the adjustable bending assembly. The distal end of the traction wire is connected to the adjustable bending assembly.

[0016] As described above, the present invention provides a bending handle for a surgical instrument and an endoscopic surgical instrument, which have at least the following beneficial effects: The rotating component is configured to include a rotating column, with a flange integrally formed on the outer side of the rotating column, a first fixing member integrally formed on the flange, and a rotating shaft hole for connecting with a rotating shaft on the rotating column. This rotating component is manufactured in one step by injection molding or other methods. After manufacturing, the bending handle can be assembled without the need for bonding or welding to connect other connecting components, thus reducing the number of parts in the bending handle, lowering the overall manufacturing cost of the handle, and consequently reducing the patient's medical expenses. Attached Figure Description

[0017] Figure 1 The diagram shown is a structural schematic of one implementation of the bending handle of a surgical instrument according to this utility model.

[0018] Figure 2 Displayed as in Figure 1 The implementation method omits a partial structural diagram of one of the sub-handle bodies.

[0019] Figure 3 Displayed as in Figure 1 The schematic diagram of the rotating component in the implementation method.

[0020] Figure 4 The diagram shown illustrates another implementation of the bending handle of a surgical instrument according to this invention.

[0021] Figure 5 Displayed as in Figure 4 The implementation method omits a structural diagram of one of the sub-handle bodies.

[0022] Figure 6 Displayed as in Figure 4 The schematic diagram of the sub-handle body in the implementation method.

[0023] Figure 7 Displayed as in Figure 4 The schematic diagram of the rotating component in the implementation method.

[0024] Figure 8 Displayed as in Figure 4 The schematic diagram of the adjustment handle in the implementation method.

[0025] Component designation explanation: 1. Handle body; 11. Sub-handle body; 111. Clearance groove; 12. First connecting cavity; 121. First mounting hole; 13. Second connecting cavity; 131. Second mounting hole; 14. Third connecting cavity; 141. Third mounting hole; 142. Fourth mounting hole; 15. Fourth connecting cavity; 151. Fifth mounting hole; 152. First clearance opening; 153. Rotating shaft; 1531. Clearance hole; 1532. Snap fastener; 1533. Snap groove; 2. Rotating component; 21. Rotating column; 211. Rotating shaft hole; 212. Fixing hole; 22. Flange; 23. First fixing component; 24. First limiting component; 25. Second limiting component; 3. Adjusting handle; 31. Connecting post; 4. Traction wire; 41. Connector; 42. Spring tube; 421. Clip; 4211. Limiting ring; 5. Conduit connector; 51. Third limiting component; 52. Fourth limiting component; 53. Fifth limiting component; 54. Second clearance opening; 6. Adjustable bending assembly; 7. Catheter; 10. Proximal end, 20. Distal end. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0027] Please refer to all the accompanying drawings below. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0028] The terms "distal end 20" and "proximal end 10" used in this invention are merely for better understanding of the invention and should not be construed as limiting the invention. Typically, during the use of surgical instruments, the distal end 20 of the surgical instrument extends into the human body, while the proximal end 10 remains outside the body for the operator to hold and perform related operations. Therefore, "distal end 20" can be understood as the part of the surgical instrument that is relatively close to the human body, and "proximal end 10" can be understood as the part of the surgical instrument that is relatively close to the outside of the human body.

[0029] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0030] Please see Figure 1-8 This utility model provides a bending adjustment handle for a surgical instrument, comprising: a handle body 1, a rotating component 2, an adjustment handle 3, and two traction wires 4; a rotating shaft 153 is provided on the inner cavity of the handle body 1; the rotating component 2 includes a rotating column 21, a flange 22 integrally formed on the outer side of the rotating column 21, and a first fixing member 23 integrally formed on the flange 22 for connecting with the proximal ends 10 of the two traction wires 4; the rotating column 21 is provided with a rotating shaft hole 211 for rotatably connecting with the rotating shaft 153; the inner sidewall of the rotating shaft hole 211 is clearance-fitted with the outer sidewall of the rotating shaft 153 to ensure that the rotating component 2 can rotate relative to the rotating shaft 153. The adjustment handle 3 is connected to the rotating component 2, and part of the adjustment handle 3 extends to the outer side of the handle body 1, so that the surgeon can rotate the adjustment handle 3 to drive the rotating component 2 to rotate relative to the rotating shaft 153.

[0031] Please see Figure 1-2 4-6, the handle body 1 may include two sub-handle bodies 11, which can be combined to form the handle body 1 by means of snap-fit ​​or other methods. The handle body 1 has an internal cavity, which can be divided into a first connecting cavity 12, a second connecting cavity 13, a third connecting cavity 14, and a fourth connecting cavity 15. The distal end 20 of the first connecting cavity 12 is provided with a first mounting hole 121 for communicating the first connecting cavity 12 with the outside. The first connecting cavity 12 and the second connecting cavity 13 are connected through the second mounting hole 131. The second mounting cavity and the third mounting cavity are connected through the spaced third mounting hole 141 and two fourth mounting holes 142. The third mounting cavity and the fourth mounting cavity are connected through two spaced fifth mounting holes 151. The fourth connecting cavity 15 is used to accommodate the proximal end 10 of the traction wire 4 and the rotating part 2, as well as part of the structure of the adjusting handle 3. The handle body 1 may also be provided with a first clearance opening 152 for the adjusting handle 3 to pass through, which is correspondingly provided in the fourth connecting cavity 15.

[0032] Please see Figure 1-3 In one implementation, the first clearance opening 152 can be provided at the connection between one sub-handle body 11 and another sub-handle body 11, or a clearance groove 111 can be provided at the connection between two sub-handle bodies 11 and another sub-handle body 11. After the two sub-handle bodies 11 are connected together by snap-fit ​​or other means, the first clearance opening 152 is formed for the adjustment handle 3 to pass through. At this time, the handle body 1 can be integrally formed with the flange 22, and the adjustment handle 3 extends out to the outside of the handle body 1 through the first clearance opening 152. Figure 1 As shown, the outer side of the adjustment handle can be located on the side of the handle body, rather than at the closest end of the handle body, so that the user can rotate the adjustment handle when using it.

[0033] In this implementation, the pivot 153 of the sub-handle body 11 is provided with a clearance hole 1531. The first clearance opening 152 is provided with a buckle 1532 and a slot 1533 at intervals. The snap-fit ​​end of the buckle 1532 extends out of the outside of the clearance hole 1531 of the pivot 153 and is used to connect with the slot 1533 of the other sub-handle body 11. By providing a clearance hole 1531 in the pivot 153 and providing a buckle 1532 and a slot 1533 in the clearance hole 1531, together with the snap-fit ​​structure provided at other positions of the two sub-handle bodies 11, it is ensured that the two sub-handle bodies 11 will not separate after being fixed together.

[0034] Please see Figure 4-8 In another implementation, the first clearance opening 152 can be provided on one of the sub-handle bodies 11. Specifically, the center line of the first clearance opening 152 can coincide with the center line of the rotating shaft 153 and pass through the rotating shaft 153. A rotating shaft hole 211 is provided at each end of the rotating column 21. The two rotating shaft holes 211 of the rotating column 21 are respectively used for clearance fit with one of the sub-handle bodies 11. A fixing hole 212 is also provided on the rotating column 21, which communicates with at least one rotating shaft hole 211. In this embodiment, to facilitate processing and reduce the weight of the rotating part 2 and lower costs, the fixing hole 212 is connected to both rotating shaft holes 211. A connecting post 31 is provided at one end of the adjusting handle 3 that extends into the handle cavity, for connecting with the fixing hole 212. The connecting post 31 passes through the first clearance opening 152 and connects to the fixing hole 212 of the rotating column 21.

[0035] The connecting post 31 can be square in shape, and the corresponding fixing hole 212 is also square. This ensures that when the adjusting handle 3 drives the rotating part 2 to rotate, the inner walls of the connecting post 31 and the fixing hole 212 will not slip. The connecting post 31 and the fixing hole 212 can be connected by an interference fit, or by bonding, etc., and this embodiment does not impose any limitations on this. Furthermore, the first clearance opening 152 and the connecting post 31 are in a clearance fit, allowing the adjusting handle 3 to rotate relative to the handle body 1.

[0036] The traction wire 4 can be a filamentous structure made of metal, such as steel wire or tungsten wire, or it can be a traction cable made of polymer material. A first fixing member 23 is respectively provided on the front and rear side walls of the flange 22. The first fixing member 23 corresponds one-to-one with the traction wire 4, and the first fixing member 23 can be an L-shaped structure. In this case, the proximal end 10 of the traction wire 4 can be a ring-shaped structure, which is sleeved on the first fixing member 23.

[0037] Please see Figure 2-3 5-7, Two first limiting members 24 are provided on the outer side of the rotating column 21, and the flange 22 is located between the two first limiting members 24, with a gap between the two first limiting members 24 and the outer side wall of the flange 22. The first limiting member 24 can be a fan-shaped structure integrally formed on the outer side of the connecting column 31, and the gap between it and the outer side wall of the flange 22 is used to accommodate the traction wire 4 to prevent the traction wire 4 from being displaced in the axial direction of the connecting column 31.

[0038] A connector 41 is provided at the proximal end 10 of the traction wire 4. The proximal end 10 of the traction wire 4 has a ring-shaped structure for fitting onto the first fixing member 23. The connector 41 can be a fixing ring for fixing the proximal end 10 of the traction wire 4 to the side wall of the proximal end 10 of the traction wire 4 to form a ring-shaped structure, so as to ensure that the traction wire 4 can be firmly fixed on the first fixing member 23. When the traction wire 4 is metal, the traction wire 4 and the connector 41 can also be connected by welding or other methods to ensure that the distal end 20 of the traction wire 4 can maintain the ring shape.

[0039] A second limiting member 25 is provided on the front side wall and the rear side wall of the flange 22 respectively. The second limiting member 25 is used to abut against the distal end 20 of the connector 41. The second limiting member 25 can be a limiting plate or a limiting post, and is used to limit the connector 41 between the first fixing member 23 and the second limiting member 25, so as to prevent relative displacement between the connector 41 and the rotating member 2 when the rotating member 2 rotates.

[0040] The distance between the outer side of the second limiting member 25 and the outer side wall of the rotating column 21 is less than the diameter of the second limiting member 25 and greater than the diameter of the traction wire 4. Thus, through the action of the second limiting member 25 and the first fixing member 23, the connecting member 41 can be limited between the first fixing member 23 and the second limiting member 25.

[0041] Please see Figure 5-6The bending handle may also include a conduit connector 5. A third limiting member 51, a fourth limiting member 52, and a fifth limiting member 53 are provided on the outer wall of the conduit connector 5. The third limiting member 51 is located on the distal end 20 of the conduit connector 5. The third limiting member 51 can be a terminal block, with an opening on its inner side for the conduit 7 to pass through. The proximal end 10 of the terminal block abuts against the outer side of the distal end 20 of the handle body 1 to prevent the conduit 7 from extending into the first receiving cavity of the handle body 1. The third limiting member 51 and the fourth limiting member 52 can be limiting rings 4211 protruding from the outer wall of the conduit connector 5. The fourth limiting member 52 abuts against the side wall of the distal end 20 of the second receiving cavity, and the fifth limiting member 53 abuts against the side wall of the distal end 20 of the third receiving cavity. Figure 5 The first mounting hole 121, the second mounting hole 131 and the third mounting hole 141 are used for the conduit connector 5 to pass through, so that the conduit connector 5 can be fixed in the inner cavity of the handle body 1 by the action of the third limiting member 51, the fourth limiting member 52 and the fifth limiting member 53.

[0042] The catheter connector 5 also includes a traction hole penetrating the axial direction of the catheter connector 5 for the traction wire 4 to pass through, and two opposing and spaced second clearance ports 54 disposed on the side wall of the catheter connector 5 and communicating with the traction hole. Each second clearance port 54 corresponds to one traction wire 4. The proximal ends 10 of the two traction wires 4 pass through the corresponding second clearance ports 54 and are then connected to the first fixing member 23. The two second clearance ports 54 are disposed on the side wall of the catheter connector 5 located in the second receiving cavity. The distal ends 20 of the traction wires 4 extend from the second clearance ports 54, pass through the fourth mounting hole 142 and the fifth mounting hole 151, and are then connected to the first fixing member 23.

[0043] A spring tube 42 may also be fitted over the traction wire 4. The proximal end 10 of the spring tube 42 passes through the second clearance opening 54 and the fourth mounting hole 142, and is then secured to the fifth mounting hole 151 by a snap-fit ​​member 421. The snap-fit ​​member 421 is a hollow cylindrical structure with limiting rings 4211 at both ends. The limiting rings 4211 at the proximal end 10 of the snap-fit ​​member 421 abut against the side wall of the distal end 20 of the fourth receiving cavity, and the limiting rings 4211 at the distal end 20 of the snap-fit ​​member 421 abut against the side wall of the proximal end 10 of the third receiving cavity, thereby fixing the spring tube 42 to the fifth mounting hole 151. After the proximal end 10 of the spring tube 42 is fixed to the fifth mounting hole 151, the proximal end 10 of the traction wire 4 passes through the spring tube 42 and connects to the first fixing member 23. In this embodiment, the spring tube 42 is used to prevent the traction wire 4 from getting tangled or interfering in the second cavity, the third cavity, and the catheter 7, which would affect the normal use of the surgical instruments.

[0044] On the other hand, this utility model also provides an endoscopic surgical instrument, including an adjustable bending component 6, a catheter 7 for accommodating a traction wire 4, and an adjustable handle as described above. The proximal end 10 of the catheter 7 is connected to the handle body 1, and the distal end 20 is connected to the adjustable bending component 6. The distal end 20 of the traction wire 4 is also connected to the adjustable bending component 6. The adjustable bending component 6 can be a flexible structure such as a snake tube. The distal end 20 of the traction wire 4 is connected to the distal end 20 of the adjustable bending component 6, thereby allowing the adjustable bending component 6 to bend under the action of the adjusting handle 3.

[0045] In summary, this utility model configures the rotating component 2 as including a rotating column 21, with a flange 22 integrally formed on the outer side of the rotating column 21. A first fixing member 23 is integrally formed on the flange 22, and a rotating shaft hole 211 for connecting with the rotating shaft 153 is provided on the rotating column 21. The rotating component 2 is manufactured by injection molding or other methods. After manufacturing, it can be assembled with a bending handle without the need for bonding or welding to connect other connecting components, thus reducing the number of parts in the bending handle, lowering the overall manufacturing cost of the handle, and consequently reducing the patient's medical expenses. Therefore, it effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0046] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A bending handle for a surgical instrument, characterized in that, include: The handle body, rotating component, adjusting handle, and two traction cables; The handle body has a rotating shaft in its inner cavity. The rotating component includes a rotating column, a flange integrally formed on the outside of the rotating column, and a first fixing member integrally formed on the flange for connecting to the proximal ends of the two traction wires. The rotating column has a rotating shaft hole for rotatably connecting with the rotating shaft. The adjusting handle is connected to the rotating component, and the adjusting handle extends to the outside of the handle body. The adjusting handle is used to drive the rotating component to rotate relative to the rotating shaft.

2. The bending handle of a surgical instrument according to claim 1, characterized in that: The handle body and the flange are integrally formed.

3. The bending handle of a surgical instrument according to claim 1, characterized in that: The rotating column is provided with a shaft hole at each end, and a fixing hole is also provided on the rotating column, the fixing hole communicating with at least one of the shaft holes; The end of the adjusting handle that extends into the inner cavity of the handle is provided with a connecting post for connecting with the fixing hole.

4. The bending handle of a surgical instrument according to claim 3, characterized in that: The connecting column has a square structure.

5. The bending handle of a surgical instrument according to claim 1, characterized in that: One of the first fixing members is provided on the front sidewall and the rear sidewall of the flange, and the first fixing member is provided in a one-to-one correspondence with the traction wire; the first fixing member is an L-shaped structure.

6. The bending handle of a surgical instrument according to claim 5, characterized in that: Two first limiting members are provided on the outer side of the rotating column, the flange is located between the two first limiting members, and there is a gap between the two first limiting members and the outer side wall of the flange.

7. The bending handle of a surgical instrument according to any one of claims 5 or 6, characterized in that: The traction wire has a connector at its proximal end, and the proximal end of the traction wire has a ring-shaped structure at the proximal end of the connector for fitting onto the first fixing member.

8. The bending handle of a surgical instrument according to claim 7, characterized in that: A second limiting member is provided on the front sidewall and the rear sidewall of the flange, and the second limiting member is used to abut against the distal end of the connector.

9. The bending handle of a surgical instrument according to claim 8, characterized in that: The distance between the second limiting member and the outer wall of the rotating column is less than the diameter of the second limiting member but greater than the diameter of the traction wire.

10. An endoscopic surgical instrument, characterized in that, The device includes an adjustable bending assembly, a conduit for receiving a traction wire, and an adjustable bending handle for a surgical instrument as described in any one of claims 1-9, wherein the proximal end of the conduit is connected to the handle body and the distal end is connected to the adjustable bending assembly, and the distal end of the traction wire is connected to the adjustable bending assembly.

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