Fracture connector of intermediate catheter for interventional operation

Abstract

The utility model provides a fracture connector of an intermediate catheter for an interventional operation, and belongs to the technical research field of medical instruments. In order to overcome the defects in the prior art, the fracture connector of the intermediate catheter for the interventional operation is additionally arranged and comprises an access part and a fracture fixing part; after the redundant length part of the middle part of the middle catheter is cut off, the two fractures of the middle catheter penetrate through the connecting-in part and then are in butt joint in the fracture fixing part, and then the middle catheter is in close contact with the connecting-in part through the outer tightener. And the connection of the tail end of the middle catheter and the Y-shaped connecting valve is not influenced after the redundant length is cut from the middle part of the middle catheter, so that the normal operation is ensured.

Description

Technical Field

[0001] The utility model belongs to the research field of medical device technology, and specifically relates to a fracture connector of an intermediate catheter used in interventional surgery. Background Art

[0002] In cerebrovascular interventional surgery, an intermediate catheter, i.e., a guiding catheter, is usually extended along the blood vessel to the lesion site, and then a catheter with a balloon is passed through the intermediate catheter so that dilation treatment can be performed at the lesion site. However, in the above process, if the intermediate catheter is too long and the length of the intermediate catheter is greater than the length of the balloon catheter, the balloon catheter cannot be passed through the front end of the intermediate catheter, resulting in the inability to invert the dilation balloon. At this time, since the intermediate catheter has reached the lesion site, it is generally not possible to replace it with a shorter intermediate catheter, and thus the smooth progress of the operation cannot be guaranteed.

[0003] The patent with announcement number CN213724285U discloses a broken tube connector for neurointervention surgery, including a connecting tube, a locking nut cover and a locking bolt; one end of the connecting tube is connected to the locking nut cover, and the other end is connected to the locking bolt. When in use, the broken end of the guiding catheter passes through the locking nut cover to connect with the connecting tube, and the guide wire is connected to the connecting tube through the locking bolt; after the guiding catheter for neurointervention surgery is cut to a broken tube of a suitable length, it is inserted into the broken tube through hole of the locking nut cover, and the broken tube sealing ring is compressed and deformed by rotating the locking nut cover, thereby clamping the broken tube. Similarly, the guide wire can be clamped by rotating the locking bolt.

[0004] However, in actual applications, the end of the guide catheter generally needs to be connected to a Y-type connecting valve, which is used to guide, place and lock the balloon catheter. However, the above technical solution is to cut off the excess part at one end of the guide catheter outside the body and then connect it to the locking nut cover, and the guide wire is connected to the locking bolt, which cannot guide, place and lock the guide wire. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art. The technical idea adopted by the utility model is: to add a fracture connector of an intermediate catheter for interventional surgery, including an access part and a fracture fixing part; after cutting off the excess length of the middle part of the intermediate catheter, the two fractures in the middle part of the intermediate catheter are respectively passed through the access part and then docked and fixed in the fracture fixing part, and then the intermediate catheter and the access part are tightened by an external tightener; in this way, by cutting off the excess middle part of the intermediate catheter, the connection between the end of the intermediate catheter and the Y-type connecting valve is not affected, and the shape and structure of the front end and the end of the intermediate catheter are not affected, so the normal operation can be ensured.

[0006] Based on the above technical ideas, the technical solution adopted by the utility model is:

[0007] A break connector for an intermediate catheter for interventional surgery, comprising: a two-way break connection tube and external tighteners arranged at both ends of the two-way break connection tube;

[0008] The bidirectional fracture connection pipe comprises a fracture fixing portion and two access portions; the fracture fixing portion is arranged between the two access portions;

[0009] The fracture fixing part connects and fixes the fractures at both ends of the intermediate conduit through the access part;

[0010] The access portion is tightened with the intermediate conduit through the external tightener.

[0011] To further limit the above technical solution, preferably, the external tightening device includes: a tightening nut, and a tightening rope connected to the tightening nut.

[0012] In a further limitation of the above technical solution, the access portion is provided with a plurality of through holes;

[0013] The tightening rope is connected to the tightening nut through the through hole.

[0014] With regard to the access portion in the above technical solution, further, the access portion is a hemispherical structure.

[0015] As a further limitation of the above technical solution, a sealing layer is provided on the inner side of the access portion.

[0016] A further limitation of the above technical solution is that an internal tightener is provided inside the access portion and at the port of the fracture fixing portion;

[0017] The inner tightener comprises an opening piece and a sealing cap matched and connected with the opening piece.

[0018] Beneficial effects of the utility model:

[0019] The utility model adds a fracture connector of an intermediate catheter for interventional surgery, which comprises an access portion and a fracture fixing portion. When in use, after cutting off the excess length portion of the middle portion of the intermediate catheter, the two fractures of the middle portion of the intermediate catheter are respectively passed through the access portion and then butted and fixed in the fracture fixing portion, and then the intermediate catheter and the access portion are tightened by an external tightener so that the two are in close contact. In this way, the connection between the end of the intermediate catheter and the Y-type connecting valve is not affected, so that the surgery is carried out normally, and the end of the intermediate catheter extending into the patient's body is not affected.

[0020] In addition, the access part is made of flexible material and is provided with a through hole on its outer surface. Thus, when the external tightening device tightens the access part, the access part is folded under the action of the tightening rope, making it more airtight and preventing the liquid in the intermediate conduit from flowing out.

[0021] Furthermore, a sealing layer is provided on the inner side of the access portion to further improve the sealing performance between the intermediate conduit and the access portion.

[0022] An internal tightener can also be provided inside the access part provided by the utility model and located at the port of the fracture fixing part. The internal tightener includes a plurality of evenly distributed opening pieces and a sealing cap matched with the opening pieces. When in use, the sealing cap moves toward one side of the opening piece and is threadedly connected with the opening piece. During this process, the sealing cap squeezes the gap between the opening pieces to become smaller, so that the opening area formed by the opening pieces becomes smaller, thereby making the opening piece in close contact with the intermediate conduit, further improving the airtightness of the connection between the access part and the intermediate conduit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic structural diagram of a fracture connector for connecting to an intermediate catheter for surgery proposed by the utility model;

[0025] Figure 2 for Figure 1 A cross-sectional view of the breakout connector is shown;

[0026] Figure 3 for Figure 1 A partial enlarged view of the outer tightener shown;

[0027] Figure 4 is a cross-sectional view of the sealing layer;

[0028] Figure 5 It is a schematic diagram of the connection relationship between the opening piece and the access part;

[0029] Figure 6 is a schematic diagram of the structure of the sealing cap;

[0030] Figure 7 It is a schematic diagram of the structure after the opening piece and the sealing cap are matched.

[0031] Among them, 1. two-way fracture connecting pipe; 11. fracture fixing part; 12. access part; 2. external tightener; 21. tightening nut; 22. tightening rope; 23. connecting rod; 24. fixing ring; 25. fixing rope; 3. internal tightener; 31. opening piece; 31a. opening; 32. sealing cap; 32a. truncated cone-shaped cavity; 32b. middle through hole; 4. through hole; 5. sealing layer; 6. middle conduit. DETAILED DESCRIPTION

[0032] In the description of the present invention, it should be understood that the terms "length direction", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0035] The embodiment of the utility model is applicable to any scenario where an intermediate catheter is required in any interventional surgery, and is particularly applicable to cerebrovascular interventional surgery. Example

[0036] In practical applications, the shape of the end of the intermediate catheter 6 that enters the patient's body is different depending on the surgical location, and its end is usually connected to a Y-shaped valve to control a balloon catheter, angiography equipment, or an infusion tube. Therefore, it is necessary to cut off the excess part in the middle of the intermediate catheter 6 and reconnect the two ends of the intermediate catheter 6, so as not to affect the normal use of the intermediate catheter 6. In general, a steel mesh is often provided on the inner side of the intermediate catheter 6 to prevent the intermediate catheter 6 from deforming.

[0037] like Figure 1-4 As shown, a fracture connector for interventional surgery provided by the utility model comprises: a two-way fracture connection tube 1 and an external tightener 2.

[0038] The material of the fracture connector for interventional surgery provided by the embodiment of the utility model is a medical flexible foldable material, specifically medical silicone rubber.

[0039] The two-way fracture connection pipe 1 includes a fracture fixing portion 11 and two access portions 12; the fracture fixing portion 11 is arranged between the two access portions 12. In actual application, the middle conduit 6 is cut off from the redundant part to form two fractures, and the two fractures are respectively inserted into the access portions 12 and butted in the fracture fixing portion 11.

[0040] The fracture fixing portion 11 is a cylindrical structure; the inner diameter of the through hole of the fracture fixing portion 11 is the same as the outer diameter of the fracture of the intermediate conduit 6 .

[0041] Two access portions 12 are symmetrically arranged at both ends of the fracture fixing portion 11; the two access portions 12 are both hemispherical structures and are provided with interfaces, which are used to dock with the central through hole of the fracture fixing portion 11. Since the cross-sectional diameter of the intermediate conduit 6 is usually small, the two access portions 12 are arranged in a hemispherical shape, which makes it easier for the intermediate conduit 6 to penetrate into the fracture fixing portion 11. The access portions 12 are integrally connected with the fracture fixing portion 11.

[0042] The two access parts 12 are respectively provided with an external tightener 2 for tightening the intermediate conduit 6 and the access part 12 to prevent the liquid in the intermediate conduit 6 from flowing out.

[0043] like Figure 3 and 4 As shown, the external tightener 2 includes a tightening nut 21, a tightening rope 22 and a connecting rod 23. The connecting rod 23 is fixedly connected to the access portion 12; the fixed connection can be an integral connection or a bolt connection.

[0044] Specifically, the connecting rod 23 includes a connecting rod group that is rotatably connected up and down; the connecting rod at the bottom is fixedly connected to the access portion 12, and the connecting rod at the top is fixedly connected to the tightening nut 21. When in use, the connecting rod at the top rotates with the rotation of the tightening nut 21.

[0045] A fixing ring 24 is provided at one end of the tightening rope 22. When in use, the end of the tightening rope 22 away from the fixing ring 24 passes through the fixing ring 24 to form an annular accommodation cavity and is connected to the tightening nut 21. The access portion 12 is sleeved in the annular accommodation cavity.

[0046] A fixing rope 25 is provided on the lower connecting rod among the connecting rods 23 for binding and fixing with the tightening rope 22 .

[0047] The use process of the external tightener 2 is as follows: after the port of the intermediate catheter 12 is fixed on the fracture fixing part 11, the tightening nut 21 is rotated so that the tightening rope 22 connected to the tightening nut 21 is wound around the connecting rod 23 under the drive of the tightening nut 21, so that the annular accommodating cavity formed by the tightening rope 22 is reduced, and then the access part 12 is contracted with the intermediate catheter 6 as the center, so that the access part 12 is in close contact with the intermediate catheter 6, and then the medical staff manually binds the tightening rope 22 and the fixing rope 25 to achieve the fixation of the access part 12 and the intermediate catheter 6.

[0048] Furthermore, a plurality of through holes 4 are evenly arranged on the access portion 12. In practical applications, the tightening rope 22 passes through the through holes 4 and is connected to the connecting rod.

[0049] When in use, by rotating the tightening nut 21, the tightening rope 22 is wound around the connecting rod 23. At this time, the access portion 12 is folded under the action of the tightening rope 22 and is in close contact with the intermediate conduit 6, thereby increasing the airtightness between the access portion 12 and the intermediate conduit 6 and sealing the fracture of the intermediate conduit 6. The material of the access portion 12 can be medical silicone rubber.

[0050] In order to improve the sealing performance between the six access parts 12 of the intermediate conduit, further, as Figure 4 As shown, a sealing layer 5 is further provided inside the access portion. Specifically, the sealing layer 5 is made of polyethylene.

[0051] Application examples:

[0052] First, the redundant portion in the middle of the intermediate catheter 6 is cut off according to the surgical requirements, and then the fracture of the intermediate catheter 6 is trimmed to prevent the fracture from deformation.

[0053] Then, the two cutouts of the intermediate conduit 6 are respectively passed through the access portions 12 to be fixed in the cutout fixing portions 11 .

[0054] Finally, the tightening nut is rotated so that the tightening rope 22 is wrapped around the connecting rod 23. Under the action of the tightening rope 22, the access part 12 is in tight contact with the intermediate conduit 6, and then the two broken ends of the intermediate conduit 6 are fixed in the broken end fixing part 11. Then the tightening rope 22 and the fixing rope 25 are manually bound to realize the docking and fixation of the broken ends of the intermediate conduit 6, thereby completing the fixation and sealing of the broken ends of the intermediate conduit 6. Example

[0055] Based on Example 1, the difference from Example 1 is that in order to improve the sealing between the access portion 12 and the intermediate conduit 6, as shown in FIG. Figure 5-7 As shown, the two access parts 12 provided in this embodiment are both provided with an internal tightener 3; wherein the internal tightener 3 includes a plurality of opening pieces 31 radially arranged with the fracture fixing part 11 as the center, and a sealing cap 32 matched and connected with the opening pieces 31.

[0056] The plurality of opening pieces 31 are arc-shaped structures, and the plurality of opening pieces 31 are arranged around the fracture fixing portion 11 to form an opening 31a. The opening piece 31 is provided with threads.

[0057] A truncated cone-shaped cavity 32a is provided at one end of the interior of the sealing cap 32, and a thread matching and connecting with the opening piece 31 is also provided in the truncated cone-shaped cavity 32a, and an intermediate through hole 32b communicating with the outside is provided at the other end of the sealing cap 32, so that the fracture of the intermediate conduit 6 passes through the intermediate through hole 32b and the opening 31a in sequence and then enters the fracture fixing portion 11.

[0058] Among them, the side curvature of the truncated cone-shaped cavity 32a is smaller than the curvature of the opening piece 31, so that the volume of the truncated cone-shaped cavity 32a is smaller than the volume of the cavity formed by multiple opening pieces 31. In this way, in the process of connecting the sealing cap 32 with the opening piece 31, the truncated cone-shaped cavity 32a squeezes the opening piece 31 to gather toward the center, so that the area of ​​the opening 31a becomes smaller, and the opening piece 31 is tightly clamped between the sealing cap 32 and the intermediate conduit 6, thereby realizing the clamping and fixation of the access part 12 and the intermediate conduit 6.

[0059] In this way, the access portion 12 is clamped between the outer tightener 2 and the inner tightener 3, and the airtightness between the intermediate conduit 6 and the access portion 12 is further improved under the internal and external clamping action of the outer tightener 2 and the inner tightener 3.

[0060] Application examples:

[0061] After the redundant middle part of the intermediate conduit 6 is cut off, the broken end of the intermediate conduit 6 is passed through the middle through hole 32b and fixed in the broken end fixing part 11; then the sealing cap 32 is moved toward the opening piece 31 arranged on the inner side of the access part 12, and is threadedly connected with the opening piece 31; during the process of threaded connection between the sealing cap 32 and the opening piece 31, the opening piece 31 is limited by the truncated cone-shaped cavity 32a, and gathers toward the center of the intermediate conduit 6, so that the gap between the opening pieces 31 becomes smaller, and the opening 31a formed by the opening piece 31 becomes smaller, thereby making the opening piece 31 in close contact with the intermediate conduit 6, thereby completing the further fixation and sealing of the access part 12 and the broken end of the intermediate conduit 6.

[0062] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A break connector for an intermediate catheter for interventional surgery, characterized in that: include: A two-way break connection pipe (1) and external tighteners (2) arranged at two ends of the two-way break connection pipe (1); The bidirectional fracture connection pipe (1) comprises a fracture fixing portion (11) and two access portions (12); the fracture fixing portion (11) is arranged between the two access portions (12); The fracture fixing portion (11) butts and fixes the fractures at both ends of the intermediate conduit via the access portion (12); The access portion (12) is tightened with the intermediate conduit through the external tightener (2).

2. The break connector of the intermediate catheter for interventional surgery according to claim 1, characterized in that: The external tightener (2) comprises a tightening nut (21) and a tightening rope (22) connected to the tightening nut (21).

3. The break connector of the intermediate catheter for interventional surgery according to claim 2, characterized in that: The access portion (12) is provided with a plurality of through holes (4); The tightening rope (22) is connected to the tightening nut (21) through the through hole (4).

4. The break connector of the intermediate catheter for interventional surgery according to claim 3, characterized in that: The access portion (12) is a hemispherical structure.

5. The break connector of the intermediate catheter for interventional surgery according to claim 4, characterized in that: A sealing layer (5) is provided on the inner side of the access portion (12).

6. The break connector of the intermediate catheter for interventional surgery according to claim 5, characterized in that: An internal tightener (3) is provided inside the access portion (12) and at the port of the fracture fixing portion (11); The inner tightener (3) comprises an opening piece (31) and a sealing cap (32) matched and connected to the opening piece (31).

Images