Disposable surgical forceps

Abstract

The utility model relates to the field of medical apparatus and instruments, disclose a disposable grasp forceps for operation, including handle, grasp forceps subassembly, slender needle subassembly, Y type shift block, actuating handle and ellipsoidal detent, wherein: the both sides of top of Y type shift block are equipped with metal clamping shaft, the inner wall of ellipsoidal hole of ellipsoidal detent away from its mounting end is equipped with ratchet part, is used for with metal clamping shaft is clamped and is connected, is used for locking the opening of forceps head of grasp forceps subassembly, and the end away from ratchet part in ellipsoidal hole inner still is equipped with the clamping groove, is used for after making forceps head completely retract in slender needle subassembly, locking, the both sides of ellipsoidal detent still are equipped with the connecting column that penetrates the waist type groove on handle, conveniently push ellipsoidal detent makes metal clamping shaft cross ratchet part and enter the clamping groove. Y type shift block and ellipsoidal detent of the utility model design can realize the locking after the complete retraction of forceps head of grasp forceps subassembly in needle tube, need not design delivery handle again, also need not open the clamping groove on connecting rod, simplify the structure, reduce the manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a disposable surgical gripper. Background Technology

[0002] Patent application CN201480034050.X, filed on April 16, 2014, discloses a minimally invasive surgical component and method. This component can perform puncture, tissue grasping, adjust the grasping angle, and lock the position after grasping to prevent rotation. However, it still has the following drawbacks:

[0003] 1. As attached Figure 1 As shown, when puncture is required, the ratchet 126 is first raised by the ratchet switch, allowing the push rod 140 to pass over the ratchet area. Then, the brake handle 130 is pressed to fully retract the gripper assembly into the slender needle assembly. Finally, the delivery handle 132 is engaged in the slot 9.1 of the connecting rod 9 to achieve locking. This locking structure is complex, requiring a delivery handle, and unlocking also requires pressing down the delivery handle to release the connecting rod.

[0004] 2. The instruction manual states that "when the actuation handle 130 moves in the rearward or compression direction, the adjusting member 146 moves in the forward direction and prevents the rotation of the rotary knob 134, the slender needle assembly 110, and the gripper assembly 120." The applicant does not understand why... Figure 1 How does 146 in the design prevent the rotary knob from rotating? Therefore, the applicant believes the structure is unclear;

[0005] 3. The specific structure and working principle of the locking knob 158 of this minimally invasive surgical component are not disclosed, and the applicant is unaware of how it achieves locking.

[0006] Based on this, this application provides a surgical disposable gripper with a reasonable structural design that does not require the design of a delivery handle to solve the above problems. Utility Model Content

[0007] The present invention aims to solve the technical problems existing in the prior art. Therefore, the present invention provides a disposable surgical forceps with a reasonable structural design that eliminates the need for a delivery handle.

[0008] The technical solution adopted by this utility model to solve its technical problem is:

[0009] A disposable surgical forceps is provided, comprising a handle, a forceps assembly with one end fitted into the handle, a slender needle assembly fitted onto the forceps assembly and with one end spring-loaded into the inner cavity of the handle, a Y-shaped lever rotatably mounted in the handle for pushing the slender needle assembly, an actuating handle rotatably mounted in the handle and connected to the Y-shaped lever via a connecting rod for controlling the movement of the Y-shaped lever, and an elliptical locking member with one end mounted in the handle and the other end engaging with the Y-shaped lever for limiting the Y-shaped lever; the top two sides of the Y-shaped lever are provided with metal retaining pins; the inner wall of the elliptical hole of the elliptical locking member away from its mounting end is provided with a ratchet portion for engaging with the metal retaining pin, thereby locking the opening of the forceps head of the forceps assembly, and the end of the elliptical hole away from the ratchet portion is also provided with a retaining groove for locking after the forceps head is fully retracted into the slender needle assembly; the two sides of the elliptical locking member are also provided with connecting posts penetrating the waist-shaped groove on the handle, facilitating pushing the elliptical locking member to make the metal retaining pin pass over the ratchet portion and enter the retaining groove.

[0010] In some alternative embodiments, the slender needle assembly includes a needle tube and a sleeve with a shoulder located on the needle tube away from the insertion end, one end of the spring abutting against the handle and the other end abutting against the shoulder; the gripper assembly includes a gripper bar with one end serving as a gripper head and a locking member located on the other end of the gripper bar for locking into the handle, the gripper bar passing through the slender needle assembly, and the sleeve and the locking member slidingly and circumferentially limitingly engaging.

[0011] In some optional embodiments, a locking assembly is also included, which includes a camshaft, a knob, and a spring rod. The camshaft is rotatably mounted inside the handle. The knob is located on both sides of the handle and is inserted into the camshaft. The cam portion of the camshaft abuts against a horizontal plate near the mounting end of an elliptical locking member, and the cam portion is provided with a limiting hook that can hook the horizontal plate. One end of the spring rod is connected to the limiting hook, and the other end is connected to the handle.

[0012] In some alternative embodiments, a rotary knob is also included, one end of which is rotatably mounted to the handle, the slender needle assembly is inserted into the rotary knob, and the rotary knob is circumferentially limited in sliding engagement with the sleeve.

[0013] In some alternative embodiments, the rotary knob is provided with a shoulder, one end of the spring abuts against the shoulder, and the other end abuts against the shoulder.

[0014] In some alternative embodiments, the shoulder is provided with meshing teeth, a locking member that is slidably installed in the handle and engages with the meshing teeth is provided, the actuation handle is provided with a connecting plate with an oblong groove, and the locking member is connected to the oblong groove by a pin, so that when the actuation handle is actuated, the locking member can be pushed into the meshing teeth to lock the rotary knob.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model sets a metal locking shaft on the Y-shaped lever and sets a slot at the end of the elliptical locking component away from the ratchet. This allows the Y-shaped lever to pass over the ratchet and enter the slot after the elliptical locking component is pushed up. This locks the gripper head of the gripper assembly after it is fully retracted into the needle tube, making puncture easier. This structure eliminates the need for a delivery handle and slots on the connecting rod, simplifying the structure and reducing manufacturing costs.

[0017] 2. The designed locking assembly utilizes a camshaft to lift the elliptical locking piece away from the horizontal plate of the ratchet, causing the ratchet to descend. This allows the metal locking pin on the Y-shaped locking block to engage with the ratchet, enabling adjustment and locking of the gripper's closing opening size. At this point, the actuation handle can be released, and the gripper will not release.

[0018] 3. The rotary knob enables the assembly consisting of the gripper assembly, the slender needle assembly, and the spring to rotate 360°, thereby adjusting the gripper direction. At the same time, the rotary knob is equipped with meshing teeth and a locking element inside the handle. By operating the actuation handle, the locking element can be inserted into the meshing teeth to lock the position of the assembly, preventing the gripper head from rotating after gripping the tissue and causing tissue damage. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0020] Figure 1 This is a diagram of the internal structure of the handle assembly in an existing minimally invasive surgical procedure.

[0021] Figure 2 This is a three-dimensional view of the disposable surgical forceps provided by this utility model;

[0022] Figure 3 This is a diagram showing the internal structure of the handle of the disposable surgical forceps provided by this utility model;

[0023] Figure 4 This is an assembly structure diagram of the slender needle assembly, gripper assembly, and rotary knob provided by this utility model;

[0024] Figure 5 yes Figure 4 Provided partial sectional view;

[0025] Figure 6 This is a three-dimensional structural diagram of the elliptical locking component provided by this utility model;

[0026] Figure 7 This is a three-dimensional structural diagram of the Y-shaped lever provided by this utility model;

[0027] Figure 8 This is a three-dimensional structural diagram of the toggle lock assembly provided by this utility model (excluding the toggle button);

[0028] Figure 9 This is an assembly drawing of the rotary knob, locking component, and actuation handle provided by this utility model.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1—Handle, 2—Gripper assembly, 2.1—Gripper bar, 2.1.1—Gripper head, 2.2—Mounting element, 3—Slender needle assembly, 3.1—Needle tube, 3.2—Sleeve, 3.2.1—Shoulder, 4—Spring, 5—Y-type lever, 5.1—Metal retaining shaft, 6—Actuating handle, 6.1—Connecting plate, 7—Oval retaining element, 7.1—Ratchet, 7.2—Connecting post, 7.3—Slot, 7.4—Horizontal plate, 8—Connecting rod, 8.1—Slot, 9—Push block, 10—Lock assembly, 10.1—Camshaft, 10.1.1—Limit hook, 10.2—Turntable, 10.3—Elastic rod, 11—Rotating knob, 11.1—Shoulder, 11.1.1—Meshing teeth, 12—Locking element. Detailed Implementation

[0031] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "installation," "connection," and "linking" used in this utility model 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 based on the specific circumstances.

[0035] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be 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 protection claimed by this utility model.

[0036] This application is a modification of the minimally invasive surgical component provided by the patent application with application number CN201480034050.X. The design of the delivery handle is eliminated, and the locking of the forceps component after the forceps head is fully retracted into the needle tube is achieved by the design of Y-shaped lever and elliptical locking component.

[0037] Example 1

[0038] This embodiment provides a disposable surgical grasping forceps, including a handle 1, a grasping forceps assembly 2, a slender needle assembly 3, a spring 4, a Y-shaped lever 5, an actuating handle 6, and an elliptical locking component 7, wherein:

[0039] As attached Figure 4 and attached Figure 5 As shown, the slender needle assembly 3 includes a needle tube 3.1 and a sleeve 3.2 with a shoulder 3.2.1 located on the needle tube 3.1 away from the insertion end. The sleeve is preferably made of plastic, and the needle tube 3.1 is embedded in the sleeve 3.2. The gripper assembly 2 includes a gripper bar 2.1 with one end designated as a gripper head 2.1.1 and a retaining member 2.2 located on the other end of the gripper bar 2.1 for engaging with a handle. The retaining member is preferably made of plastic, and the gripper bar 2.1 is embedded in the retaining member 2.2. When assembling the slender needle assembly with the gripper assembly, the gripper head at one end of the gripper bar is closed and inserted from the tail end of the needle tube, so that the gripper bar passes through the slender needle assembly. Preferably, the sleeve 3.2 and the retaining member 2.2 are circumferentially limited and slidingly engaged. In this embodiment, a regular polygonal engagement is adopted, that is, a regular polygonal blind hole is provided in the sleeve, and the retaining member is configured as a regular polygonal structure that inserts into the regular polygonal blind hole. In this embodiment, a rectangular fit can be selected. After the slender needle assembly 3 and the gripper assembly 2 form an assembly, the spring 4 is fitted into it, and the assembly is installed inside the handle. For specific installation, see attached... Figure 3 As shown, the mounting piece 2.2 is mounted in the slot of the handle 1, with one end of the spring 4 abutting against the handle 1 and the other end abutting against the shoulder 3.2.1.

[0040] As attached Figure 3 and attached Figure 7 As shown, one end of the Y-shaped lever 5 is installed inside the handle 1, and the other end abuts against the back of the shoulder 3.2.1 of the slender needle assembly 3. The end of the Y-shaped lever 5 away from the shoulder is connected to the actuating handle 6 via the connecting rod 8. The top of the actuating handle 6 is rotatably connected to the handle 1, and one end of the connecting rod 8 is rotatably connected to the Y-shaped lever 5, while the other end hooks onto the actuating handle 6. When the actuating handle is gripped, the Y-shaped lever can push the slender needle assembly forward. Since the tail end of the gripper assembly is fixed inside the handle, when the slender needle assembly moves forward, it will squeeze the jaws and close them.

[0041] To lock the position of the Y-type lever, metal retaining shafts 5.1 are provided on both sides of the top of the Y-type lever 5. Additionally, as shown in the attached... Figure 3 and attached Figure 6 As shown, one end of the elliptical locking member 7 is installed inside the handle 1, and the inner wall of the elliptical hole away from the installation end is provided with a ratchet part 7.1, which is used to engage with the metal locking shaft 5.1, thereby locking the opening of the jaws of the gripper assembly.

[0042] The elliptical locking component 7 is also provided with connecting posts 7.2 on both sides that penetrate the waist-shaped groove on the handle. Push blocks 9 are inserted into the connecting posts 7.2, as shown in the attached figure. Figure 1 As shown, it can be used to push the elliptical locking component 7. A groove 7.3 is also provided at the end of the elliptical hole away from the ratchet portion 7.1, used for locking after the pliers head is fully retracted into the slender needle assembly. In this embodiment, the elliptical locking component 7 can be easily pushed upwards by the push block 9, allowing the metal locking shaft 5.1 to pass over the ratchet portion 7.1 and enter the groove. Under normal circumstances, during the actuation handle gripping process, the metal locking shaft on the Y-shaped lever moves in a fan-shaped trajectory within the elliptical locking component. When the push block is not pushed, the metal locking shaft does not engage with the ratchet portion, nor can it pass over the ratchet portion to enter the groove. Only when the push block is pressed down, causing the elliptical locking component to move slightly downwards, will the metal locking shaft on the Y-shaped lever engage with the ratchet portion during the actuation handle gripping process, thus locking the pliers head opening. The tighter the actuation handle gripping, the smaller the pliers head opening. Similarly, only when the push block is pushed up, causing the elliptical locking piece to move upward, can the actuation handle be gripped to the bottom, and the metal locking pin on the Y-shaped lever can pass over the ratchet and enter the locking slot (the push block can be released when the metal locking pin passes over the ratchet). At this time, the pliers head is completely retracted into the slender needle assembly, making it convenient to perform the puncture action.

[0043] Example 2

[0044] Based on Embodiment 1, in order to solve the problem that the metal retaining pin needs to be manually pressed down to enter the ratchet part, this embodiment also includes a locking assembly 10, as shown in the attached diagram. Figure 2 Appendix Figure 3 Appendix Figure 6 and attached Figure 8As shown, the locking assembly 10 of this embodiment includes a camshaft 10.1, a toggle switch 10.2, and a spring rod 10.3. The camshaft 10.1 is rotatably mounted inside the handle 1. The toggle switch 10.2 is located on both sides of the handle 1 and is inserted into the camshaft 10.1. The cam portion of the camshaft 10.1 abuts against the horizontal plate 7.4 near the mounting end of the elliptical locking member 7, and the cam portion is provided with a limiting hook 10.1.1 that can hook the horizontal plate. One end of the spring rod 10.3 is connected to the limiting hook 10.1.1, and the other end is connected to the handle 1, used to provide torque for camshaft reset. The working principle is as follows:

[0045] Under normal circumstances, as shown in the attached document Figure 3 As shown, the elliptical minor axis region of the camshaft abuts against the horizontal plate, at which point the horizontal plate is hooked by the camshaft's limiting hook (hooked by the attached...). Figure 6 As shown in part a), rotating the control knob 90° releases the limit hook from the horizontal plate. Simultaneously, the horizontal plate is lifted by the elliptical major axis of the camshaft, thus lowering the elliptical locking component. At this point, the Y-shaped metal locking pin can be engaged by gripping the actuation handle, allowing the opening size of the pliers head to be adjusted and locked.

[0046] Example 3

[0047] Based on Example 1 or Example 2, as shown in the appendix Figure 2 and attached Figure 3 As shown, this embodiment also includes a rotating knob 11. One end of the rotating knob 11 is rotatably mounted on the handle 1. The slender needle assembly 3 passes through the rotating knob 11, and the rotating knob 11 and the sleeve 3.2 are circumferentially limited in sliding engagement. This embodiment uses a regular polygonal engagement, that is, a regular polygonal blind hole is provided inside the rotating knob, and the sleeve 3.2 is configured as a regular polygonal structure that inserts into the regular polygonal blind hole. This embodiment can be optionally rectangular. Preferably, the rotating knob 11 is provided with a shoulder 11.1, one end of the spring 4 abuts against the shoulder 11.1, and the other end abuts against the shoulder 3.2.1.

[0048] This embodiment allows the assembly consisting of a gripping forceps assembly, a slender needle assembly, and a spring to rotate 360°, facilitating adjustment of the forceps head's position and simplifying surgical procedures.

[0049] Example 4

[0050] Based on Example 3, in order to address the potential tissue damage caused by forceps rotation during surgery, as shown in the attached... Figure 3 and attached Figure 9As shown, this embodiment further includes engagement teeth 11.1.1 on the shoulder 11.1. A locking member 12, which engages with the engagement teeth 11.1.1, is slidably installed inside the handle 1. The sliding installation method is as follows: a groove is provided on the inner wall of the handle, and the locking member is slidably installed in the groove. A connecting plate 6.1 is provided on the actuating handle 6, and an oblong groove is provided on the connecting plate 6.1. The locking member 12 is connected to the oblong groove through a pin (the pin can move within the oblong groove), so that when the actuating handle is actuated, it can push the locking member into the engagement teeth to lock the rotating knob. This embodiment can achieve the following: as long as the actuating handle is gripped, the rotating knob can be locked by the locking member to prevent the pliers head from rotating.

[0051] The disposable surgical forceps in the above embodiments are used as follows:

[0052] When puncture is required, the forceps head is fully retracted into the syringe. Push the push blocks on both sides of the handle upwards, and grip the actuation handle to make the metal pin of the Y-shaped lever pass over the ratchet and enter the slot. At this time, the forceps head is fully retracted into the syringe, and the puncture action is completed.

[0053] After the puncture is completed, if it is necessary to grasp the tissue, first turn the rotary knob to adjust the position of the forceps head, then turn the dials on both sides of the handle 90°, use the cam part to lift the horizontal plate of the elliptical locking piece, and move the ratchet part down. At this time, grip the actuation handle, and the Y-shaped metal locking pin will enter the ratchet part. As the actuation handle is gripped, the opening of the forceps head becomes smaller and smaller until the tissue is grasped.

[0054] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A disposable surgical forceps, comprising a handle, a forceps assembly with one end fitted into the handle, a slender needle assembly fitted onto the forceps assembly and with one end spring-loaded into the inner cavity of the handle, a Y-shaped lever rotatably mounted in the handle for pushing the slender needle assembly, an actuating handle rotatably mounted in the handle and connected to the Y-shaped lever via a connecting rod for controlling the movement of the Y-shaped lever, and an elliptical locking member with one end mounted in the handle and the other end engaging with the Y-shaped lever for limiting the movement of the Y-shaped lever; characterized in that: The top two sides of the Y-shaped lever are provided with metal retaining pins; The elliptical locking component has a ratchet portion on the inner wall of the elliptical hole away from its mounting end, which is used to engage with the metal locking shaft to lock the opening of the jaws of the gripper assembly. The end of the elliptical hole away from the ratchet portion is also provided with a groove for locking the jaws after they are fully retracted into the slender needle assembly. The two sides of the elliptical locking component are also provided with connecting posts that penetrate the waist-shaped groove on the handle, which facilitates pushing the elliptical locking component to make the metal locking shaft pass over the ratchet portion and enter the groove.

2. The disposable surgical forceps according to claim 1, characterized in that: The slender needle assembly includes a needle tube and a sleeve with a shoulder located on the needle tube away from the insertion end. One end of the spring abuts against the handle, and the other end abuts against the shoulder. The gripper assembly includes a gripper bar with one end serving as a gripper head and a locking component located at the other end of the gripper bar for engaging with a handle. The gripper bar passes through a slender needle assembly, and the sleeve and the locking component are circumferentially limited and slidably engaged.

3. The disposable surgical forceps according to claim 2, characterized in that: It also includes a toggle lock assembly, which includes a camshaft, a toggle switch, and a spring rod. The camshaft is rotatably mounted inside the handle. The toggle switch is located on both sides of the handle and is inserted into the camshaft. The cam portion of the camshaft abuts against a horizontal plate near the mounting end of an elliptical locking piece, and the cam portion is provided with a limiting hook that can hook the horizontal plate. One end of the spring rod is connected to the limiting hook, and the other end is connected to the handle.

4. The disposable surgical forceps according to claim 2, characterized in that: It also includes a rotary knob, one end of which is rotatably mounted on the handle, the slender needle assembly passing through the rotary knob, and the rotary knob slidingly engaging with the sleeve in a circumferentially limited manner.

5. The disposable surgical forceps according to claim 4, characterized in that: The rotary knob has a protruding shoulder, one end of the spring abuts against the protruding shoulder, and the other end abuts against the shoulder.

6. The disposable surgical forceps according to claim 5, characterized in that: The shoulder is provided with meshing teeth, and a locking member that is slidably installed in the handle and inserted into the meshing teeth is provided. The actuation handle is provided with a connecting plate with an oblong groove. The locking member is connected to the oblong groove through a pin, so that when the actuation handle is moved, the locking member can be pushed into the meshing teeth to lock the rotating knob.

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