A kind of bending tool for needle sheath clamping claw of vascular suturing device

Abstract

The utility model provides a needle sleeve clamping claw bending tool for a vascular suturing device, which relates to the field of medical devices and comprises a base, a pressure rod rotatably matched with the base, and a cushion seat falling into a rotation path of the pressure rod; the pressure rod is provided with a pressure rod extension part, and the pressure rod extension part approaches and contacts the cushion seat or moves away from the cushion seat after breaking contact when the pressure rod rotates; the pressure rod is provided with a punch extending to the pressure rod extension part and exposed outward from the lower part of the pressure rod extension part; the pressure rod extension part is provided with a first profiling groove, and the second profiling groove arranged above the cushion seat cooperates with the first profiling groove; the punch extends from the part exposed outward from the pressure rod extension part into the first profiling groove, the pressure rod approaches and contacts the pressure rod extension part, the first profiling groove covers the needle sleeve located in the second profiling groove, and the claw is bent in combination with the tip extending into the laser cutting groove where the needle sleeve clamping claw is located.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a needle sleeve clamping claw bending tool for a vascular suturing device. Background Art

[0002] Vascular sutures are commonly used hemostatic tools in medical surgery. They are generally composed of a needle, a needle sheath, and sutures. The needle and the needle sheath must be firmly assembled. At present, in order to prevent the needle and the needle sheath from falling off and separating, there is an anti-slip structure at the connection between the needle and the needle sheath, such as Figure 1 and Figure 2 As shown, the step at the needle tip and the claw of the needle sleeve (after bending) form an inverted anti-drop structure, wherein the needle sleeve is a small and micro-precision metal part, and its outer peripheral surface is processed into three-divided claws by laser cutting, and the claws are bent by a fixture. After the needle is inserted into the needle sleeve, the bent claws are against the needle step to form an inverted anti-drop structure. However, due to the very small size of the needle sleeve, it is difficult to bend the claws, and the bending accuracy is even more difficult to ensure. Therefore, it is necessary to propose a needle sleeve claw bending device dedicated to a vascular suturing device based on the above facts. Utility Model Content

[0003] The utility model aims to provide a needle sheath clamping claw bending tool for a vascular suturing device to solve the above technical problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A needle sheath claw bending tool for a vascular suturing device comprises a base, a pressure rod rotatably matched with the base, and a cushion seat falling into the rotation path of the pressure rod;

[0006] The pressure rod has a pressure rod extension part, and when the pressure rod rotates, the pressure rod extension part approaches and contacts the cushion seat or moves away from the cushion seat after breaking contact;

[0007] The pressure rod has a punch extending to the pressure rod extension portion and protruding outward from below the pressure rod extension portion;

[0008] The extension of the pressure rod is provided with a first profiling groove, and the first profiling groove is matched with a second profiling groove arranged above the cushion seat;

[0009] The punch extends from the exposed part of the extension of the pressure rod to the first profiling groove. When the pressure rod approaches and contacts the extension of the pressure rod, the first profiling groove cover presses the needle sleeve in the second profiling groove, and the punch extends into the laser cutting groove where the needle sleeve claw is located to bend the claw.

[0010] Preferably, the first contoured groove and the second contoured groove are combined to form an accommodating space for encircling the needle sleeve.

[0011] Preferably, the second profiling groove has two limiting plates corresponding to the laser cutting grooves of the needle sleeve, and the two limiting plates enter the corresponding two laser cutting grooves, so that the remaining laser cutting groove in the needle sleeve is opposite to the punch.

[0012] Preferably, the punch includes a fixing portion, a punch rod combined with the fixing portion, and a tip portion at the end of the punch rod.

[0013] Preferably, the combination of the pressure rod and the pressure rod extension has a first groove of the snare fixing portion, a second groove of the snare punch, and a third groove for the tip to be exposed outward from the pressure rod extension.

[0014] Preferably, the third groove is communicated with the first contoured groove.

[0015] Preferably, the cushion includes a first cushion and a second cushion adjacent to the first cushion and in contact with the first cushion, wherein the first cushion is combined with the base, and the second cushion is combined with the first cushion.

[0016] Preferably, the base has a base extension portion, which is a rotational connection portion of the pressure rod.

[0017] The beneficial effects of the utility model are:

[0018] 1. The pressure rod approaches and contacts the extension of the pressure rod, the first profiling groove covers the needle sleeve located in the second profiling groove, and the tip extends into the laser cutting groove where the needle sleeve claw is located to bend the claw.

[0019] 2. The needle sleeve parts are small parts, so they need to be observed and processed under a video microscope. The lever structure is convenient for taking and operating the needle sleeve, and it is also convenient for observing the effects before and after processing under the microscope.

[0020] 3. The punch and the pressure rod are split design, and users can replace them according to the wear conditions.

[0021] 4. The tail of the punch adopts a square design and is fixed with screws. This design can limit and fix the punch in four directions: front, back, left, and right, and can effectively ensure the landing position and direction of the punch tip.

[0022] 5. The needle sleeve claws are divided into three equal parts around a circle. Through the positioning of the limit plate, the placement of each equal part of the claw in the profiling groove can be kept consistent. At the same time, the limit plate and the profiling groove can well prevent the needle sleeve from moving back and forth and rotating, ensuring the bending effect and the assembly performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a state diagram before the needle is inserted into the needle sheath;

[0024] Figure 2A schematic diagram of the inverted anti-drop structure formed after the needle is inserted into the needle cover;

[0025] Figure 3 It is a front view of the needle sleeve claw bending tool;

[0026] Figure 4 for Figure 3 A schematic diagram of the structure of the needle sleeve claw bending tool after the punch and the main body are separated;

[0027] Figure 5 for Figure 3 Schematic diagram of the structure after the middle pressure cover rotates counterclockwise relative to the adapter block;

[0028] Figure 6 for Figure 3 A cross-sectional view of the middle gland portion;

[0029] Figure 7 for Figure 6 The enlarged image after the needle cover is removed;

[0030] Figure 8 for Figure 7 Enlarged view after the pedestal is removed;

[0031] Fig. 9 It is a schematic diagram of the punch tip bending the needle sleeve claws;

[0032] Fig.10 It is a schematic diagram of the structure of the bevel angle of the punch tip;

[0033] Fig.11 It is a schematic diagram of the structure of the cushion seat and the limiting piece in the second profiling groove;

[0034] Figure numerals: 1. base; 2. base extension; 3. pressure rod; 4. pressure rod extension; 5. first cushion; 6. second cushion; 7. first groove; 8. fixing portion; 9. punch; 10. tip; 11. second groove; 12. third groove; 13. first contour groove; 14. second contour groove; 15. limit plate. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0036] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0037] Example 1

[0038] In this embodiment, a needle sheath clamping jaw bending tool for a vascular suture device is provided. Figure 1 and Figure 2 For reference, please see Figure 3-Figure 11 The needle sheath claw bending tool of the vascular suturing device includes a base 1, a pressure rod 3 rotatably matched with the base 1, and a cushion seat falling into the rotation path of the pressure rod 3.

[0039] Further explanation, such as Figure 4 As shown, there is a base extension part 2 above the base 1, and the base extension part 2 is a rotating connection part of the pressure rod 3. Specifically, the pressure rod 3 has a pin hole, and the base extension part 2 has a matching hole that coincides with the axis of the pin hole at the pressure rod 3. In this way, the pin shaft is inserted along the axis of the pin hole and the matching hole, and the pressure rod 3 can rotate relative to the base extension part 2.

[0040] To further explain, Figure 7 and Figure 8 As shown, above the base 1 there is a first pad 5 which falls into the rotation path of the pressure rod 3, and a second pad 6 adjacent to the first pad 5. It should be noted that the first pad 5 is connected to the base 1 by bolts, and the second pad 6 is connected to the first pad 5 by bolts.

[0041] See also Figure 3-Figure 8 The pressure rod 3 has a pressure rod extension portion 4, which approaches and contacts the first cushion seat 5 and the second cushion seat 6 when the pressure rod 3 rotates, or is separated from the first cushion seat 5 and the second cushion seat 6 after contacting the first cushion seat 5 and the second cushion seat 6.

[0042] See also Figure 7 and Figure 8 The combination of the pressure rod 3 and the pressure rod extension 4 includes a first groove 7, a second groove 11 combined with the groove end of the first groove 7, and a third groove 12 combined with the other groove end of the second groove 11.

[0043] Further explanation, the punch is located in the combination groove of the first groove 7, the second groove 11 and the third groove 12. Figure 4 As shown, it includes a fixing portion 8 located in the first groove 7 and fixed by bolts, a punch rod 9 located in the second groove 11 and combined with the fixing portion 8, and a tip portion 10 extending outward from the third groove 12 and located at the end of the punch rod 9.

[0044] To further explain, since the size of the needle sleeve is extremely small (outer diameter is only 0.5mm, length is only 1.2mm), and the claw area formed by laser cutting is small (only 0.3mmX0.3mm), the tip 10 is required to be designed to be smaller than this area and not interfere with other parts during the bending action.

[0045] It should be noted that the fixing portion 8 is designed in a square shape, which is convenient for assembly with the square hole of the first groove 7 to ensure that the tip 10 does not rotate during the bending process. In addition, the tip 10 is designed in a square shape, and other shapes such as a cylinder and a hexagon can also be used. The tip 10 is beveled, and the bevel is processed according to the required bending angle. In this embodiment, the bevel of the tip 10 is as follows: Fig.10 45° shown.

[0046] See also Figure 6-Figure 8 A first profiling groove 13 is provided at the bottom of the pressure rod extension portion 4, and the first profiling groove 13 is matched with a second profiling groove 14 arranged above the first cushion seat 5 and the second cushion seat 6. In this embodiment, the first profiling groove 13 and the second profiling groove 14 are combined to form a storage space for encircling the needle sleeve.

[0047] To further illustrate, the tip 10 extends outward from the third groove 12 to the first profiling groove 13. In this way, the needle sleeve is placed in the second profiling groove 14. Based on the pressure rod 3 approaching and contacting the pressure rod extension 4, the first profiling groove 13 covers the needle sleeve located in the second profiling groove 14, and the tip 10 extends into the laser cutting groove where the needle sleeve claw is located to bend the claw.

[0048] To further explain, Figure 8 As shown, considering the bending depth of the needle sleeve claw, it can be controlled by designing the distance H that the tip 10 extends out of the pressure rod extension 4. It should be noted that the size of the accommodating space for embracing the needle sleeve formed by the combination of the first profiling groove 13 and the second profiling groove 14 is slightly larger than the diameter of the needle sleeve, ensuring that the pressure rod extension 4 can fix the needle sleeve with the first cushion 5 and the second cushion 6 when pressed together, so that it does not move in series. Finally, the hole diameter of the third groove 12 is larger than the maximum diameter of the tip 10.

[0049] Please Fig. 9 For reference and see Fig.11 In order to fix the needle sleeve, the second contoured groove 14 has two limiting pieces 15 corresponding to the laser cutting grooves of the needle sleeve. The two limiting pieces 15 enter the corresponding two laser cutting grooves, so that the remaining laser cutting groove in the needle sleeve is opposite to the punch.

[0050] The entire operation process of this embodiment is as follows:

[0051] ①Since the needle sleeve is small in size, the entire bending process will be carried out under a microscope;

[0052] ② Use tweezers to put the needle sleeve into the second contoured groove 14, wherein the two limit pieces 15 enter the laser-cut grooves where the two claws are located, leaving only the laser-cut groove where the other claw is located facing the tip 10;

[0053] ③ After the needle sleeve is installed in place under the video microscope, press down the pressure rod 3, and the pressure rod extension part 4 approaches and completely contacts the first cushion seat 5 and the second cushion seat 6. Wait for a few seconds, lift the pressure rod 3, and observe the bending effect under the microscope; operate the other two claws in the same way.

[0054] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0055] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A needle sheath claw bending tool for a vascular suturing device, characterized in that: It includes a base, a pressure rod rotatably matched with the base, and a cushion seat falling into the rotation path of the pressure rod; The pressure rod has a pressure rod extension part, and when the pressure rod rotates, the pressure rod extension part approaches and contacts the cushion seat or moves away from the cushion seat after breaking contact; The pressure rod has a punch extending to the pressure rod extension portion and protruding outward from below the pressure rod extension portion; The extension of the pressure rod is provided with a first profiling groove, and the first profiling groove is matched with a second profiling groove arranged above the cushion seat; The punch extends from the exposed part of the extension of the pressure rod to the first profiling groove. When the pressure rod approaches and contacts the extension of the pressure rod, the first profiling groove cover presses the needle sleeve in the second profiling groove, and the punch extends into the laser cutting groove where the needle sleeve claw is located to bend the claw.

2. The needle sheath claw bending tool of a vascular suturing device according to claim 1, characterized in that: The first contoured groove and the second contoured groove are combined to form an accommodating space for embracing the needle sleeve.

3. The needle sheath claw bending tool of a vascular suturing device according to claim 2, characterized in that: The second profiling groove has two limiting plates corresponding to the laser cutting grooves of the needle sleeve, and the two limiting plates enter the corresponding two laser cutting grooves, so that the remaining laser cutting groove in the needle sleeve is directly opposite to the punch.

4. The needle sheath claw bending tool of a vascular suturing device according to claim 3, characterized in that: The punch includes a fixing portion, a punch rod combined with the fixing portion, and a tip portion at the end of the punch rod.

5. The needle sheath claw bending tool of a vascular suturing device according to claim 4, characterized in that: The combination of the pressure rod and the pressure rod extension part is provided with a first groove of the snare fixing part, a second groove of the snare punch, and a third groove for the tip to be exposed outward from the pressure rod extension part.

6. The needle sheath claw bending tool of a vascular suturing device according to claim 5, characterized in that: The third groove is communicated with the first contoured groove.

7. The needle sheath claw bending tool of a vascular suturing device according to claim 6, characterized in that: The cushion seat comprises a first cushion seat and a second cushion seat adjacent to the first cushion seat and in contact with the first cushion seat, wherein the first cushion seat is combined with the base, and the second cushion seat is combined with the first cushion seat.

8. The needle sheath claw bending tool of a vascular suturing device according to claim 1, characterized in that: The base has a base extension portion, which is a rotation connection portion of the pressure rod.

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