Solt assembling structure of blood vessel stitching instrument

Abstract

The utility model provides a thread leg assembling structure of a blood vessel stitching instrument, and belongs to the technical field of blood vessel stitching instrument production devices. The assembling structure comprises a shaping unit and a positioning unit, the shaping unit is provided with a first body, one side face of the first body is provided with a shaping groove, the shaping groove is provided with a linear section and a bent section, the bent section is arranged at one end of the linear section, and the shape of the bent section is matched with that of a wire containing groove in a wire leg; the other end of the linear section extends out of the side surface of the first body; the positioning unit is provided with a second body, a containing space with an opening is formed in the second body and used for containing a wire leg, the shape of the side wall, facing the opening, in the containing space is matched with the back face of the wire leg, and the second body is provided with a channel for a nickel-titanium wire to penetrate through; the channel extends into the accommodating space from one side wall of the second body and is communicated with the wiring groove in the wiring pin; the technical problems that according to an existing wire foot and nickel-titanium wire assembling mode, human body rejection is easily caused, the glue curing time is long, and the processing efficiency is low are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vascular suture device production equipment, and specifically relates to a vascular suture device thread foot assembly structure. Background Technology

[0002] Interventional surgery is to make an incision on the arteries and veins of the human body, allowing the interventional device to pass through the blood vessels into the body to reach the desired surgical site. Since some blood vessel incisions are large and anticoagulants and platelet drugs are used during surgery, it is difficult to close and stop bleeding and recover from large blood vessel incisions, so vascular suture devices are currently used for hemostasis.

[0003] If Figure 1 As shown in , the suturing process of the vascular suture device first requires opening the thread foot 2 connected to the needle 1, and then the needle 1 needs to be connected to the thread foot 2. The thread foot 2 plays a supporting role on the inner wall of the blood vessel 3. In this process, the opening of the thread foot 2 is pulled by the nickel-titanium wire 4, and the nickel-titanium wire 4 is fixedly connected to the thread foot 2. As shown in Figure 2 As shown in FIG. 1 , the molding foot 2 has a wire groove, which has a straight section 21 that passes through the molding foot 2 and an arc section 22 that connects the straight section 21. The arc section 22 is arranged on the back of the molding foot 2. The front of the molding foot 2 is provided with a groove 23 with a diameter slightly larger than the wire groove at the end of the straight section 21.

[0004] The existing nickel-titanium wire and the thread foot are fixedly connected by glue bonding, which increases the adverse reaction of human body rejection; in addition, the curing process of the glue is long, generally requiring a waiting period of more than 6 hours before it can be firm, resulting in low product manufacturing efficiency; and because the thread foot is small in size, it is not convenient to grasp and position, and the process of inserting the nickel-titanium wire into the thread foot is time-consuming and laborious.

[0005] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Contents of utility model

[0006] The purpose of the utility model is to provide a vascular suture device thread foot assembly structure to solve the technical problems that the existing thread foot and nickel-titanium wire assembly method is easy to cause human body rejection and the glue curing time is long and the processing efficiency is low.

[0007] In order to achieve the above purpose, the vascular suture device thread foot assembly structure of the utility model provides the following technical solutions:

[0008] A vascular suture device thread foot assembly structure, comprising:

[0009] ​​The shaping unit, the shaping unit has a first body, on one side of the first body there is a shaping groove, the shaping groove has a linear section and a bending section, the bending section is arranged at one end of the linear section and its shape is adapted to the wire groove on the wire foot, the other end of the linear section extends out of the side of the first body;

[0010] The positioning unit, the positioning unit has a second body, on the second body there is a receiving space with an opening for placing the wire foot, the shape of the side wall facing the opening in the receiving space is adapted to the back of the wire foot, on the second body there is a channel for the nickel-titanium wire to pass through, the channel extends from one side wall of the second body into the receiving space and communicates with the wire groove on the wire foot.

[0011] As a further optimized technical solution, a plurality of the shaping grooves are evenly arranged on the first body for processing multiple nickel-titanium wires at one time.

[0012] As a further optimized technical solution, the linear sections of the plurality of shaping grooves are arranged in parallel.

[0013] As a further optimized technical solution, a limiting structure is arranged on the first body for ensuring that the nickel-titanium wire in the shaping groove is fixed during the shaping process of the nickel-titanium wire.

[0014] As a further optimized technical solution, the limiting structure includes a plurality of pressing blocks, the pressing blocks are movably connected to one side of the shaping groove, and at least one pressing block is arranged in the bending section.

[0015] As a further optimized technical solution, the pressing block is detachably connected to one side of the shaping groove by a screw.

[0016] As a further optimized technical solution, the bending section has an arc portion and a straight portion, the arc portion is adapted to the arc section of the wire foot, and the straight portion is adapted to the straight section of the wire foot.

[0017] As a further optimized technical solution, the top of the second body has an inclined surface from top to bottom, and the opening of the receiving space is arranged on the inclined surface.

[0018] As a further optimized technical solution, the channel is arranged at the position on the back of the inclined surface.

[0019] As a further optimized technical solution, the channel is horizontally arranged, and the channel extends from the side wall of the second body into the receiving space and is opposite to the straight section of the wire groove on the wire foot.

[0020] Beneficial effects: By providing a shaping unit, the nitinol wire can be processed into a shape adapted to the shape of the wire foot mounting groove. Then, after welding a positioning ball at the end of the wire foot, the nitinol wire is removed from the shaping unit. The wire foot is placed in the positioning unit to directly assemble the nitinol wire to the wire foot. The above method of assembling the wire foot no longer requires glue bonding, solving the technical problem that the existing glue bonding is prone to cause human rejection reactions. At the same time, since the shaping time of the nitinol wire is much shorter than the curing time of the glue, the production cycle is effectively shortened. Moreover, by placing the wire foot in the positioning unit for operation, the assembly is facilitated and the production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The schematic diagrams in the specification forming a part of the present application are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation of the present utility model. Among them:

[0022] Figure 1 is a schematic diagram of the working process of a vascular suture device;

[0023] Figure 2 is a schematic diagram of the structure of a wire foot;

[0024] Figure 3 is a schematic diagram of the structure of a shaping unit according to an embodiment of the present utility model;

[0025] Figure 4 is a schematic diagram of the shape of the nitinol wire after shaping according to an embodiment of the present utility model;

[0026] Figure 5 is a schematic diagram of the shape of the nitinol wire after welding according to an embodiment of the present utility model;

[0027] Figure 6 is a schematic diagram of the working state of a positioning unit according to an embodiment of the present utility model;

[0028] Figure 7 is a schematic diagram of another working state of a positioning unit according to an embodiment of the present utility model;

[0029] Figure 8 is a schematic diagram of the completed assembly of the wire foot according to an embodiment of the present utility model.

[0030] In the figures: 1, needle head; 2, wire foot; 21, straight section; 22, arc section; 23, groove; 3, blood vessel; 4, nitinol wire; 41, positioning ball; 5, shaping unit; 51, first body; 52, shaping groove; 521, linear section; 522, bending section; 5221, arc part; 5222, straight part; 53, pressing block; 54, screw; 6, positioning unit; 61, second body; 62, accommodating space; 63, channel; 64, inclined surface. Detailed implementation manners

[0031] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art shall fall within the protection scope of the present utility model.

[0032] In the description of the present utility model, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model rather than requiring the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. The terms "connected" and "coupled" used in the present utility model should be understood in a broad sense. For example, it may be a fixed connection or a detachable connection; it may be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments. It should be noted that, without conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other.

[0034] The present utility model provides a suture thread foot assembling structure for a vascular stapler. By providing a shaping unit and a positioning unit, the shaping unit is used to shape the nitinol wire, and the positioning unit is used to assemble the nitinol wire and the suture thread foot, eliminating the need for glue, reducing the human body rejection reaction and improving the assembling efficiency.

[0035] Specifically, as Figure 3 、 Figure 6 shown, a suture thread foot assembling structure for a vascular stapler includes two shaping units 5 and positioning units 6 that are independent in structure but cooperate in function.

[0036] Among them, the shaping unit 5 has a first body 51 in the shape of a cuboid. A plurality of shaping grooves 52 are formed on the top surface of the first body 51 for shaping multiple nickel-titanium wires 4 at one time. The depth of the shaping groove 52 is close to the diameter of the nickel-titanium wire 4 and has a linear section 521 and a bending section 522. The bending section 522 has an arc section 5221 and a straight section 5222. The arc section 5221 is adapted to the arc section 22 of the wire foot 2, and the straight section 5222 is adapted to the straight section 21 of the wire foot 2. In this way, the nickel-titanium wire 4 shaped by the bending section 522 is convenient for being assembled in the wire slot of the wire foot 2. The bending section 522 is arranged at one end of the linear section 521 and has a shape adapted to the wire slot on the wire foot 2. The other end of the linear section 521 extends out of the side surface of the first body 51 for fully accommodating the area of the nickel-titanium wire 4 that needs to be shaped. In this embodiment, the linear sections 521 of the plurality of shaping grooves 52 are arranged in parallel and are all parallel to the length of the first body 51.

[0037] The positioning unit 6 has a second body 61 also in the shape of a cuboid. A downward-inclined surface 64 is provided at the top of the second body 61. The inclination angle of the inclined surface 64 is selected such that it is most suitable for the worker to directly face the inclined surface 64 with a slight downward tilt of the head during operation, and it is specifically adjusted according to the height of the production line workbench. An accommodating space 62 with an opening for placing the wire foot 2 is provided on the second body 61. The opening of the accommodating space 62 is provided on the inclined surface 64. The shape of the side wall of the accommodating space 62 facing the opening is adapted to the back surface of the wire foot 2, thus facilitating the placement of the wire foot 2. A channel 63 for the nickel-titanium wire 4 to pass through is provided on the second body 61. The channel 63 extends from one side wall of the second body 61 into the accommodating space 62 and communicates with the wire slot on the wire foot 2. In this embodiment, the channel 63 is horizontally arranged. The channel 63 extends from the side wall of the second body 61 into the accommodating space 62 and faces the straight section 21 of the wire slot on the wire foot 2. In this way, the length dimension of the channel 63 is the smallest, which is convenient for processing, and the distance that the nickel-titanium wire 4 travels in the second body 61 during the subsequent assembly of the wire foot is the shortest, thus facilitating the assembly.

[0038] In order to ensure that the nickel-titanium wire 4 remains stationary in the shaping groove 52 during the shaping process, a limiting structure is provided on the first body 51 to temporarily limit the nickel-titanium wire 4.

[0039] In this embodiment, the limiting structure of each shaping groove 52 includes a plurality of pressing blocks 53. The plurality of pressing blocks 53 are evenly spaced along the extending direction of the shaping groove 52, and at least one pressing block 53 is arranged in the bending section 522.

[0040] The pressing block 53 is movably connected to one side of the shaping groove 52. In this embodiment, the pressing block 53 is detachably connected to one side of the shaping groove 52 by screws 54. Before shaping is required, the pressing block 53 is tightened to one side of the shaping groove 52 by screws 54 to press the nitinol wire 4. After shaping is completed, the pressing block 53 can be removed by loosening the screws 54, and then the nitinol wire 4 can be taken out of the shaping groove 52.

[0041] In other embodiments, the pressing block 53 can also be hinged to one side of the shaping groove 52. Before shaping is required, the pressing block 53 is rotated above the shaping groove 52 where the nitinol wire 4 is placed to press the nitinol wire 4. After shaping is completed, the pressing block 53 above the nitinol wire 4 can be rotated to one side and then the nitinol wire 4 can be taken out.

[0042] Specifically, during the processing, first the nitinol wires 4 are respectively laid in the shaping grooves 52, the pressing block 53 is installed to press the nitinol wires 4, and then the shaping unit 5 is placed in a heat treatment furnace for treatment at 525 °C for 15 minutes and then taken out, and air-cooled for 1 hour. The nitinol wires 4 form Figure 4 the shape. Subsequently, the ends of the heat-treated and cooled nitinol wires 4 are placed under a laser welding machine for ball welding treatment. A positioning ball 41 is formed at one end of the welded nitinol wire 4. The diameter of the positioning ball 41 is slightly larger than that of the groove 23, which is convenient for interference fit with the groove 23. Specifically, as Figure 5 shown, the nitinol wire 4 is taken out of the shaping unit 5. After that, as Figure 7 shown, the lead 2 is placed into the accommodation space 62, the non-shaped processing end of the nitinol wire 4 is threaded into the lead 2 from one end of the groove 23, passes through the straight section 21 of the lead 2 and exits through the channel 63 until the positioning ball 41 of the nitinol wire 4 is clamped in the groove 23, and then the lead 2 is taken out of the accommodation space 62, and finally the assembly as Figure 8 shown is completed.

[0043] It can be understood that the above description is only exemplary, and the embodiments of the present application are not limited thereto.

[0044] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are within the scope of the claims of the present invention pending approval.

Claims

1. A vascular suture device thread foot assembly structure, characterized in that: include: A shaping unit (5), the shaping unit (5) comprising a first body (51), a shaping groove (52) being arranged on one side of the first body (51), the shaping groove (52) comprising a linear section (521) and a bending section (522), the bending section (522) being arranged at one end of the linear section (521) and having a shape matching the wire groove on the molding foot (2), and the other end of the linear section (521) extending out of the side of the first body (51); A positioning unit (6), the positioning unit (6) comprising a second body (61), the second body (61) being provided with a receiving space (62) having an opening for accommodating a wire foot (2), the shape of a side wall facing the opening in the receiving space (62) being adapted to the back side of the wire foot (2), the second body (61) being provided with a channel (63) for allowing a nickel-titanium wire (4) to pass through, the channel (63) extending from a side wall of the second body (61) into the receiving space (62) and being connected to a wire groove on the wire foot (2).

2. The vascular suture device thread foot assembly structure according to claim 1, characterized in that: A plurality of shaping grooves (52) are evenly arranged on the first body (51) and are used for processing a plurality of nickel-titanium wires (4) at one time.

3. The vascular suture device thread foot assembly structure according to claim 2, characterized in that: The linear sections (521) of the plurality of shaping grooves (52) are arranged in parallel.

4. The vascular suture device thread assembly structure according to any one of claims 1 to 3, characterized in that: The first body (51) is provided with a limiting structure for ensuring that the nickel-titanium wire (4) in the shaping groove (52) is fixed during the shaping process of the nickel-titanium wire (4).

5. The vascular suture device thread assembly structure according to claim 4, characterized in that: The limiting structure comprises a plurality of pressing blocks (53), wherein the pressing blocks (53) are movably connected to one side of the shaping groove (52), and at least one of the pressing blocks (53) is arranged in the bending section (522).

6. The vascular suture device thread foot assembly structure according to claim 5, characterized in that: The pressing block (53) is detachably connected to one side of the shaping groove (52) via a screw (54).

7. The vascular suture device stitch assembly structure according to any one of claims 1 to 3, characterized in that: The bending section (522) comprises an arcuate portion (5221) and a straight portion (5222), wherein the arcuate portion (5221) is adapted to the shape of the arcuate portion (22) of the line foot (2), and the straight portion (5222) is adapted to the straight portion (21) of the line foot (2).

8. The vascular suture device stitch assembly structure according to any one of claims 1 to 3, characterized in that: The top of the second body (61) has an inclined surface (64) extending from top to bottom, and the opening of the accommodating space (62) is arranged on the inclined surface (64).

9. The vascular suture device thread foot assembly structure according to claim 8, characterized in that: The channel (63) is arranged at a position behind the inclined surface (64).

10. The vascular suture device thread foot assembly structure according to claim 9, characterized in that: The channel (63) is arranged horizontally, and the channel (63) extends from the side wall of the second body (61) to the inside of the accommodating space (62) and faces the straight line section (21) of the wire groove on the wire foot (2).

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