A disposable puncture guide

Abstract

The utility model relates to surgical instrument technical field, the utility model discloses a kind of disposable puncture introducer, including handle, introducer assembly and puncture hook assembly, handle is installed in the rear end of introducer assembly, introducer assembly includes puncture device and guide rod, puncture device is installed in the end of guide rod away from handle, puncture device is by the front puncture portion, connecting portion and rear fixed portion of sequentially connected, front puncture portion has the rear stab surface towards rear fixed portion and the front stab surface of rear fixed portion, the included angle between front stab surface and rear stab surface and guide rod central axis is 45±20 °.The utility model provides a kind of disposable puncture introducer, the included angle between front stab surface and rear stab surface and guide rod central axis is 45±20 °, with the puncture angle of demonstration, easy to puncture, to reduce puncture resistance.

Description

Technical Field

[0001] This utility model relates to the field of surgical instrument technology, and more specifically, to a disposable puncture guide. Background Technology

[0002] Chinese patent document CN217162239U discloses a pelvic floor puncture guide, belonging to the field of surgical instruments. It includes a handle, a puncture device, a suture hook, and a locking screw. The puncture device includes a puncture rod and a puncture hook. The suture hook includes a sliding rod, a suture puncture head, and a push-pull block. The front end of the puncture hook has a puncture hook head, and one side of the puncture hook head has a through groove with a suture hole at the top and bottom of the through groove. The suture puncture head has a suture groove with a notch. The tail of the puncture rod or handle has a positioning protrusion, and the tail of the sliding rod has a positioning groove. This puncture guide incorporates a positioning mechanism between the puncture device and the suture hook, making puncture and suture hooking operations more flexible and convenient, effectively reducing suture slippage, and improving the safety and reliability of surgical procedures. Furthermore, the handle is injection molded, facilitating ergonomic design, making the pelvic floor puncture guide lighter and more comfortable to operate.

[0003] When implementing the above technical solutions, there are some issues that need to be considered: the design of the puncture hook head is relatively simple, and the puncture resistance may be large during the puncture process, which may reduce the smoothness of the operation and affect the efficiency of the operation. Utility Model Content

[0004] To address the aforementioned issues, this utility model discloses a disposable puncture guide, comprising a handle, a guide assembly, and a puncture hook assembly. The handle is mounted at the rear end of the guide assembly. The guide assembly includes a puncture device and a guide rod. The puncture device is mounted on the end of the guide rod away from the handle. The puncture device consists of a front puncture section, a connecting section, and a rear fixing section connected in sequence. The front puncture section has a rear insertion surface facing the rear fixing section and a front insertion surface facing away from the rear fixing section. The angle between the front insertion surface and the rear insertion surface and the central axis of the guide rod is 45±20°.

[0005] Preferably, the rear fixing part is installed on the guide rod away from the handle end, and the front piercing part is formed with a cutting edge. The angle between the side of the cutting edge facing the rear fixing part and the rear piercing surface is 140±20°, and the side of the cutting edge facing away from the rear fixing part has a smooth curved transition with the front piercing surface.

[0006] Preferably, the width of the side of the cutting edge facing backwards from the fixed part is 1.5±1mm.

[0007] Preferably, the connecting part is designed as a gradually curved structure, with the radius of the side of the connecting part facing the rear fixing part and the side facing away from the rear fixing part being 20-40mm, and smoothly transitioning to the rear insertion surface and the front insertion surface.

[0008] Preferably, the guide rod is a hollow structure, the guide hole is located inside the guide rod to guide the piercing hook assembly, and the rear fixing part has a tail end hole that communicates with the guide hole.

[0009] Preferably, the puncture hook assembly includes a puncture hook rod, with multiple toothed push-pull posts evenly distributed at the tail end of the puncture hook rod, and a puncture hook head provided at the head of the puncture hook rod. The puncture hook head has an inclined surface that facilitates the sliding of the guide wire into it, and a hook groove and a threading hole that facilitate the threading of the guide wire are provided on the front puncture part.

[0010] Preferably, the handle is provided with a guide groove for guiding the puncture hook rod, the guide groove is connected to the guide hole, the end of the handle away from the guide groove is provided with an arc-shaped grip groove, the handle is hollowed out with a round hole and an elliptical hole, the two sets of elliptical holes are symmetrically distributed with the round hole as the center, and the wire pressing screw is provided at the end of the handle away from the guide rod, the wire pressing screw is set in a flywheel shape.

[0011] Preferably, a receiving cavity is installed in the guide groove away from the guide rod, and a spring plate is installed at the end of the handle away from the guide rod. The end of the spring plate that enters the receiving cavity is arched upwards to fit the tail of the piercing hook rod.

[0012] Preferably, the surface of the puncture device and the head of the puncture hook are coated with Teflon.

[0013] Preferably, the toothed push-pull column is a hollow structure, and the surface of the toothed push-pull column is provided with textures to increase friction. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 This is a front view of the present invention;

[0017] Figure 3 This is a top view of the present invention;

[0018] Figure 4 This is a bottom view of the present invention;

[0019] Figure 5 This is a cross-sectional view of the present invention;

[0020] Figure 6This is a schematic diagram of the puncture device structure of this utility model;

[0021] Figure 7 This is a cross-sectional view of the guide rod and handle of this utility model;

[0022] Figure 8 This is a cross-sectional view of the spherical adjusting block of this utility model.

[0023] In the diagram: 1. Handle; 3. Puncture hook assembly; 4. Blade; 21. Puncture tool; 22. Guide rod; 23. Front puncture part; 24. Connecting part; 25. Rear fixing part; 26. Rear insertion surface; 27. Front insertion surface; 28. Guide hole; 29. ​​Tail end hole; 30. Puncture hook needle rod; 31. Toothed push-pull post; 32. Puncture hook needle head; 33. Bevel; 34. Thread groove; 35. Thread hole; 36. Guide groove; 37. Arc-shaped grip groove; 38. Round hole; 39. Oval hole; 40. Thread screw; 41. Receiving cavity; 42. Spring plate. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Example:

[0026] Please refer to the following: Figures 1 to 6 This embodiment provides a disposable puncture guide, including a handle 1, a guide assembly, and a puncture hook assembly 3. The handle 1 is installed at the rear end of the guide assembly. The guide assembly includes a puncture device 21 and a guide rod 22. The puncture device 21 is installed at the end of the guide rod 22 away from the handle 1. The puncture device 21 consists of a front puncture part 23, a connecting part 24, and a rear fixing part 25 connected in sequence. The front puncture part 23 has a rear insertion surface 26 facing the rear fixing part 25 and a front insertion surface 27 facing away from the rear fixing part 25. The included angle between the front insertion surface 27 and the rear insertion surface 26 and the central axis of the guide rod 22 is 45±20°.

[0027] The working principle and beneficial effects of the above technical solution are as follows:

[0028] This utility model discloses a disposable puncture guide. The puncture hook assembly 3 extends from the guide rod 22 into the puncture device 21 to bring out the guide wire located on the front puncture part 23. The disposable puncture guide provided by this utility model has an angle of 45±20° between the front puncture surface 27 and the rear puncture surface 26 and the central axis of the guide rod 22, which is a schematic puncture angle, making puncture easier and reducing puncture resistance.

[0029] In this embodiment, the rear fixing part 25 is installed on the guide rod 22 away from the handle 1, and the front piercing part 23 is formed with a cutting edge 4. The angle between the side of the cutting edge 4 facing the rear fixing part 25 and the rear piercing surface 26 is 140±20°, and the side of the cutting edge 4 facing away from the rear fixing part 25 and the front piercing surface 27 are smoothly curved.

[0030] Furthermore, the width of the side of the cutting edge 4 facing backwards from the fixing part 25 is 1.5±1mm.

[0031] The working principle and beneficial effects of the above technical solution are as follows:

[0032] The angle between the cutting edge 4 and the rear insertion surface 26 is 140±20°, forming a sharp cutting edge that facilitates rapid tissue puncture with low puncture resistance and easy puncture. The width of the side of the cutting edge 4 facing away from the rear fixing part 25 is 1.5±1mm to avoid tissue damage caused by excessive width.

[0033] In this embodiment, the connecting part 24 is designed as a gradually curved structure. The radius of the side of the connecting part 24 facing the rear fixing part 25 and the side facing away from the rear fixing part 25 is 20-40mm, and it is smoothly connected to the rear insertion surface 26 and the front insertion surface 27.

[0034] The working principle and beneficial effects of the above technical solution are as follows:

[0035] The design of the gradually curved structure of the connecting part 24, and the radius of the side of the connecting part 24 facing the rear fixing part 25 and the side facing away from the rear fixing part 25 being 20-40mm, make the puncture process of the connecting part 24 smoother and reduce frictional resistance.

[0036] In this embodiment, the guide rod 22 is a hollow structure, the guide hole 28 is located inside the guide rod 22 to guide the piercing hook assembly 3, and the rear fixing part 25 has a tail end hole 29 that communicates with the guide hole 28.

[0037] The working principle and beneficial effects of the above technical solution are as follows:

[0038] The guide hole 28 ensures smooth movement of the puncture hook assembly 3 during puncture, reduces jamming, provides a stable guide channel for the puncture hook assembly 3, and improves the positioning accuracy of the puncture hook assembly 3. Furthermore, the guide hole 28 makes the guide rod 22 a closed structure, which can prevent foreign objects from falling in.

[0039] In this embodiment, the piercing hook assembly 3 includes a piercing hook needle rod 30. The tail of the piercing hook needle rod 30 is provided with a plurality of toothed push-pull posts 31 evenly spaced. The head of the piercing hook needle rod 30 is provided with a piercing hook needle head 32. The piercing hook needle head 32 has an inclined surface 33 that facilitates the sliding of the guide wire into it. The front piercing part 23 is provided with a hook groove 34 that facilitates the insertion of the piercing hook needle head 32 and a threading hole 35 that facilitates the insertion of the guide wire.

[0040] The working principle and beneficial effects of the above technical solution are as follows:

[0041] The beveled surface facilitates the insertion of the guide wire, while the hook groove 34 and threading hole 35 provide a clear channel for the piercing hook needle 32 and the guide wire, ensuring operational accuracy and reliability. The toothed push-pull post 31 facilitates the application of force, improving the maneuverability of the piercing hook assembly 3.

[0042] In this embodiment, the handle 1 is provided with a guide groove 36 for guiding the puncture hook rod 30. The guide groove 36 is connected to the guide hole 28. The end of the handle 1 away from the guide groove 36 is provided with an arc-shaped grip groove 37. The handle 1 is hollowed out with a round hole 38 and an elliptical hole 39. The two sets of elliptical holes 39 are symmetrically distributed with the round hole 38 as the center. The wire pressing screw 40 is provided at the end of the handle 1 away from the guide rod 22. The wire pressing screw 40 is set in a flywheel shape.

[0043] The working principle and beneficial effects of the above technical solution are as follows:

[0044] The guide groove 36 provides a stable guide channel for the piercing hook bar 30. The arc-shaped grip groove 37 is ergonomically designed, improving the grip comfort and operational stability of the handle 1. The round hole 38 and oval hole 39 reduce the weight of the handle 1 while increasing its aesthetic appeal. The wire clamping screw 40 has a flywheel-like design for easy rotation.

[0045] In this embodiment, a receiving cavity 41 is installed in the guide groove 36 at a position away from the guide rod 22, and a spring plate 42 is installed at the end of the handle 1 away from the guide rod 22. The end of the spring plate 42 that extends into the receiving cavity 41 is arranged in an upward arch shape to fit the tail of the piercing hook rod 30.

[0046] The working principle and beneficial effects of the above technical solution are as follows:

[0047] With the spring plate 42 in place, when the tail of the piercing hook rod 30 retracts into the receiving cavity 41 within the guide groove 36, it pushes against the spring plate 42. The spring plate 42 uses its own elastic restoring performance to limit the tail of the piercing hook rod 30, thus achieving "locking" of the piercing hook rod 30 within the guide groove 36, making it less likely to fall off.

[0048] In this embodiment, the surface of the puncture device 21 and the head of the puncture hook shank 30 are both coated with Teflon.

[0049] The working principle and beneficial effects of the above technical solution are as follows:

[0050] The surface of the puncture device 21 and the head of the puncture hook rod 30 are coated with Teflon to effectively reduce puncture resistance. Teflon, chemically known as PTFE or polytetrafluoroethylene, is a commonly used material in medical devices. Its role on the surface of the puncture device 21 and the puncture hook rod 30 is to increase the smoothness of the product (i.e., reduce puncture friction resistance) and to prevent blood and muscle tissue from adhering to it.

[0051] In this embodiment, the toothed push-pull post 31 is a hollow structure, and the surface of the toothed push-pull post 31 is provided with textures to increase friction.

[0052] The beneficial effects of the above technical solution are as follows:

[0053] The textured surface increases friction, improving the feel and comfort of operation.

[0054] like Figure 7 , Figure 8 As shown, in an optional embodiment, an adjustment seat 43 is installed on the guide rod 22 near the handle 1. An adjustment channel is opened in the adjustment seat 43, which connects the guide hole 28 and the guide groove 36. A spherical adjustment block 44 is rotatably installed in the adjustment channel. A main channel 45 and a secondary channel 46 are provided through the spherical adjustment block 44. The main channel 45 and the secondary channel 46 are vertically distributed. The inner diameter of the main channel 45 is larger than that of the secondary channel 46. An adjustment shaft 47 is installed on the top of the adjustment seat 43 and extends into the adjustment channel to connect with the spherical adjustment block 44.

[0055] The working principle and beneficial effects of the above technical solution are as follows:

[0056] A main channel 45 and a secondary channel 46 are provided through the spherical adjusting block 44. The inner diameters of the main channel 45 and the secondary channel 46 are different, which allows for the guidance of two puncture hook rods 30 with different corresponding inner diameters. By simply rotating the adjusting shaft 47, the spherical adjusting block 44 is rotated within the adjusting channel, and the main channel 45 or the secondary channel 46 is adjusted to connect with the adjusting channel according to the requirements of different diameter puncture hook rods 30.

[0057] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A disposable puncture guide, comprising a handle (1), a guide assembly, and a puncture hook assembly (3), wherein the handle (1) is mounted at the rear end of the guide assembly, characterized in that, The guide assembly includes a puncture device (21) and a guide rod (22). The puncture device (21) is mounted on the end of the guide rod (22) away from the handle (1). The puncture device (21) consists of a front puncture part (23), a connecting part (24), and a rear fixing part (25) connected in sequence. The front puncture part (23) has a rear insertion surface (26) facing the rear fixing part (25) and a front insertion surface (27) facing away from the rear fixing part (25). The angle between the front insertion surface (27) and the rear insertion surface (26) and the central axis of the guide rod (22) is 45±20°.

2. The disposable puncture guide according to claim 1, characterized in that, The rear fixing part (25) is installed on the guide rod (22) away from the handle (1). The front piercing part (23) is formed with a cutting edge (4). The angle between the side of the cutting edge (4) facing the rear fixing part (25) and the rear piercing surface (26) is 140±20°. The side of the cutting edge (4) facing away from the rear fixing part (25) and the front piercing surface (27) are smoothly curved.

3. The disposable puncture guide according to claim 2, characterized in that, The width of the side of the cutting edge (4) facing away from the rear fixing part (25) is 1.5±1mm.

4. The disposable puncture guide according to claim 1, characterized in that, The connecting part (24) is designed as a gradually curved structure. The radius of the side of the connecting part (24) facing the rear fixing part (25) and the side facing away from the rear fixing part (25) is 20-40mm, and it is smoothly connected to the rear insertion surface (26) and the front insertion surface (27).

5. A disposable puncture guide according to claim 2, characterized in that, The guide rod (22) is hollow, and the guide hole (28) is located inside the guide rod (22) to guide the piercing hook assembly (3). The rear fixing part (25) has a tail end hole (29) that communicates with the guide hole (28).

6. The disposable puncture guide according to claim 1, characterized in that, The piercing hook assembly (3) includes a piercing hook rod (30), with multiple toothed push-pull posts (31) evenly distributed at the tail of the piercing hook rod (30), and a piercing hook head (32) provided at the head of the piercing hook rod (30). The piercing hook head (32) has an inclined surface (33) that facilitates the sliding of the guide wire into it. The front piercing part (23) is provided with a hook groove (34) that facilitates the insertion of the piercing hook head (32) and a threading hole (35) that facilitates the insertion of the guide wire.

7. A disposable puncture guide according to claim 6, characterized in that, The handle (1) is provided with a guide groove (36) for guiding the puncture hook rod (30). The guide groove (36) is connected to the guide hole (28). The end of the handle (1) away from the guide groove (36) is provided with an arc-shaped grip groove (37). The handle (1) is hollowed out with a round hole (38) and an elliptical hole (39). The two sets of elliptical holes (39) are symmetrically distributed with the round hole (38) as the center. The wire pressing screw (40) is provided at the end of the handle (1) away from the guide rod (22). The wire pressing screw (40) is set in the shape of a flywheel.

8. A disposable puncture guide according to claim 7, characterized in that, A receiving cavity (41) is installed in the guide groove (36) away from the guide rod (22). A spring plate (42) is installed at the end of the handle (1) away from the guide rod (22). The end of the spring plate (42) that enters the receiving cavity (41) is arched upwards to fit the tail of the piercing hook rod (30).

9. A disposable puncture guide according to claim 6, characterized in that, The surface of the puncture device (21) and the head of the puncture hook rod (30) are coated with Teflon.

10. A disposable puncture guide according to claim 6, characterized in that, The toothed push-pull column (31) is designed as a hollow structure, and the surface of the toothed push-pull column (31) is provided with textures to increase friction.

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