Implant conveying device

Abstract

The utility model relates to the technical field of medical instruments, in particular to an implant conveying device, which comprises a conveying catheter and further comprises a mounting rod, a connecting rod and a connecting rod, the conveying assembly is arranged in the conveying catheter and connected with the multiple mounting rods, according to the implant conveying device, in the process that a doctor implants a patient, the mounting rods can be driven by the conveying assembly to lock and position an implant, the implant can be released by adjusting the mounting rods in a target area, and therefore the patient can be prevented from being injured. The implant and the conveying device are prevented from being accidentally touched and released, the operation accuracy and safety are improved, the influence on the operation success rate can be reduced, the influence on the health of a patient can be avoided, all materials meet the medical grade standard, various implants are compatible, different operation requirements are met, and the operation scheme is enriched.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an implant delivery device. Background Art

[0002] The use of minimally invasive interventional technology to treat vascular diseases has gradually become a standard treatment recognized by the industry. Among them, vascular implants play a vital role in the treatment of cerebral aneurysms, arteriovenous malformations, and vascular closure surgeries. Under the precise guidance of advanced medical imaging equipment, doctors can skillfully deliver the implant to the designated location of the human blood vessels safely through a catheter, and then withdraw the catheter to accurately release and fix the implant in the target area.

[0003] In the implant delivery process, the mechanical detachable structure plays a vital role. This structure is a cleverly designed mechanical device, one end of which is tightly connected to the implant and the other end is connected to the delivery device. By precisely manipulating the operating structure on the delivery device, the doctor can remotely control the mechanical detachable structure.

[0004] However, in actual clinical applications, we found that during the implantation process, since the implant and the delivery device can be released when a certain squeezing pressure is generated between them, this operation method may sometimes cause accidental touch due to careless operation or interference from external factors, thereby causing the implant to be released prematurely. This unexpected situation may not only affect the success rate of the operation, but also cause unnecessary risks to the patient's health. For this reason, we propose an implant delivery device. Utility Model Content

[0005] A technical problem to be solved by the present application is: how to design an implant delivery device that can avoid accidental release of the implant and the delivery device.

[0006] In order to solve the above technical problems, the present application provides an implant delivery device, including a delivery catheter, and further comprising:

[0007] A mounting rod, the mounting rod being disposed inside the delivery conduit;

[0008] The delivery component is arranged in the delivery catheter and connected with a plurality of mounting rods, and is used to drive the mounting rods to lock and position the implant, and can release the implant in the target area by adjusting the mounting rods.

[0009] In some embodiments, there are multiple mounting rods, and the delivery assembly includes multiple positioning frames respectively arranged in the delivery catheter, each of the positioning frames is rotatably provided with a rotating shaft, and multiple mounting rods are respectively arranged on the rotating shaft. Each of the mounting rods is provided with a connecting piece for connecting the implant, and a releasing piece in contact with the multiple mounting rods is provided in the delivery catheter for adjusting the mounting rod to release the implant. Each of the mounting rods is provided with an elastic piece for controlling the resetting of the mounting rod.

[0010] In some embodiments, the connecting member includes a slot arranged at the end of the mounting rod, an insertion rod is movably arranged in the slot, the slot and the insertion rod are interference fit, and a connecting bent rod is arranged on the insertion rod.

[0011] In some embodiments, the release member includes a shift frame slidably arranged in the conveying conduit, and a special-shaped top block is arranged at one end of the shift frame close to the mounting rod, and the special-shaped top block can contact and squeeze the mounting rod, and an adjustment rod is arranged at one end of the shift frame away from the special-shaped top block. An anti-accidental touch member is arranged in the conveying conduit, which is used to adjust the position of the adjustment rod and prevent accidental touch.

[0012] In some embodiments, the anti-mis-touch component includes an internal thread arranged at an end of the delivery conduit away from the mounting rod, a threaded column is threadedly connected to the internal thread, and the adjustment rod is rotatably connected to the threaded column via a bearing.

[0013] In some embodiments, the elastic member includes a plurality of spring sheets respectively disposed on the mounting rods, and ends of the spring sheets are connected to the delivery conduit.

[0014] In some embodiments, a plurality of limit blocks are disposed on the special-shaped top block, and the limit blocks can respectively contact adjacent mounting rods.

[0015] In some embodiments, the number of the mounting rods is 2-6.

[0016] In some embodiments, the connecting member includes a slot arranged at the end of the mounting rod, an insertion rod is movably arranged in the slot, the slot and the insertion rod are interference fit, and a connecting arc rod is arranged on the insertion rod.

[0017] The utility model has at least the following beneficial effects:

[0018] 1. During the implantation process, the doctor can use the delivery assembly to drive the mounting rod to lock the implant and release the implant in the target area by adjusting the mounting rod, thereby avoiding accidental release of the implant and the delivery device, improving the accuracy and safety of the operation and reducing the impact on the success rate of the operation.

[0019] 2. Multiple mounting rods are arranged on the positioning frame through a rotating shaft, and combined with the reset function of the elastic member, the stability and reliability of the device during the delivery process are ensured, and the accidental fall-off of the implant is avoided.

[0020] 3. The combined design of the shifting frame, special-shaped top block and anti-mis-touch parts effectively prevents mis-touch operations during the operation, further ensuring the safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the utility model after being equipped with a variable diameter conduit;

[0022] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 3 For this utility model Figure 1 Schematic diagram of the local cross-section structure;

[0024] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure of the middle A area;

[0025] Figure 5 For this utility model Figure 3 Schematic diagram of some structures after explosion;

[0026] Figure 6 For this utility model Figure 5 Schematic diagram of the enlarged structure of the middle B area;

[0027] Figure 7 For this utility model Figure 2 Schematic diagram of the flat section structure;

[0028] Figure 8 For this utility model Figure 7 Schematic diagram of the enlarged structure of the middle C area;

[0029] Fig. 9 This is a schematic diagram of the structure of the utility model after the delivery catheter is removed;

[0030] Fig.10 This is a schematic diagram of the structure of the installation rod and the connecting bent rod after explosion of the utility model;

[0031] Fig.11 This is a schematic diagram of the structure of the installation rod and the connecting arc rod after explosion in Example 2 of the utility model;

[0032] Fig.12 This is a schematic diagram of the structure of an anti-slip layer provided on the connecting bent rod in Example 3 of the utility model;

[0033] Fig.13This is a schematic diagram of the structure of an anti-slip layer provided on the connecting arc rod in Example 3 of the utility model.

[0034] In the figure: 1. conveying catheter; 2. mounting rod; 3. conveying assembly; 31. positioning frame; 32. rotating shaft; 4. connecting piece; 41. slot; 42. inserting rod; 43. connecting bent rod; 44. connecting arc rod; 5. releasing piece; 51. shifting frame; 52. special-shaped top block; 53. adjusting rod; 6. anti-accidental touch piece; 61. internal thread; 62. threaded column; 7. elastic piece; 71. spring piece; 8. limit block; 9. anti-slip layer. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] Example 1: Please refer to Figure 1-Figure 10 , the utility model provides a technical solution:

[0037] An implant delivery device includes a delivery catheter 1. The delivery catheter 1 is a common structure and will not be described in detail herein. A reducing catheter is provided at the end of the delivery catheter 1 for placing a portion of an implant that cannot be directly placed in the delivery catheter 1. The device also includes:

[0038] A mounting rod 2, wherein the mounting rod 2 is disposed inside the delivery catheter 1, and the mounting rod 2 is a linear rod structure, the material of which meets medical-grade standards, and can be compatible with a variety of implants when combined with different connectors 4;

[0039] A delivery assembly 3, which is disposed in the delivery catheter 1 and connected to a plurality of mounting rods 2, and is used to drive the mounting rods 2 to lock and position the implant, and can release the implant in the target area by adjusting the mounting rods 2;

[0040] There are multiple mounting rods 2, and the delivery assembly 3 includes multiple positioning frames 31 respectively arranged in the delivery catheter 1, and the positioning frames 31 are rotatably provided with a rotating shaft 32, and multiple mounting rods 2 are respectively arranged on the rotating shaft 32, and the mounting rods 2 are provided with a connecting piece 4 for connecting the implant, and the delivery catheter 1 is provided with a release piece 5 in contact with the multiple mounting rods 2 for adjusting the mounting rods 2 to realize the release of the implant, and the mounting rods 2 are provided with an elastic piece 7 for controlling the reset of the mounting rod 2;

[0041] The connecting member 4 includes a slot 41 disposed at the end of the mounting rod 2, and a plug rod 42 is movably disposed in the slot 41. The slot 41 and the plug rod 42 are interference fit, so that the slot 41 and the plug rod 42 will not be easily separated, that is, the accidental release of the implant is avoided. A connecting bent rod 43 is disposed on the plug rod 42, which can lock and position the implant with a smooth surface;

[0042] The release member 5 includes a shift frame 51 slidably arranged in the delivery conduit 1, and a special-shaped top block 52 is arranged at one end of the shift frame 51 close to the installation rod 2, and the special-shaped top block 52 can contact and squeeze the installation rod 2, and an adjustment rod 53 is arranged at one end of the shift frame 51 away from the special-shaped top block 52, and an anti-mistaken touch member 6 is arranged in the delivery conduit 1, which is used to adjust the position of the adjustment rod 53 and prevent mis-touch;

[0043] The anti-mis-touch member 6 includes an internal thread 61 disposed at one end of the delivery catheter 1 away from the mounting rod 2, a threaded column 62 is threadedly connected to the internal thread 61, and the adjustment rod 53 is rotatably connected to the threaded column 62 via a bearing. The rotatable connection design between the adjustment rod 53 and the threaded column 62 enables the doctor to easily adjust the position of the shift frame 51 by rotating the threaded column 62, thereby achieving precise control of the mounting rod 2;

[0044] The elastic member 7 includes a plurality of spring pieces 71 respectively arranged on the mounting rod 2, and the ends of the spring pieces 71 are connected to the delivery conduit 1;

[0045] In addition, a fixing groove may be provided on the threaded column 62, and a pull ring may be provided in the fixing groove. The pull ring design in the fixing groove enables the doctor to easily identify and operate the threaded column 62 during the operation, thereby improving the convenience of the operation.

[0046] The special-shaped top block 52 is provided with a plurality of limit blocks 8, and the limit blocks 8 can respectively contact with the adjacent mounting rods 2 to prevent the mounting rods 2 from being excessively squeezed and deformed, and ensure that the special-shaped top block 52 and the mounting rod 2 can be separated normally;

[0047] The number of the mounting rods 2 is 2-6, so that the device can adapt to a variety of different types of implants and surgical requirements. In this solution, the preferred number is 4.

[0048] When in use, in the surgical preparation stage, the doctor selects a suitable connector 4 according to the shape and structure of the implant. In this embodiment, the connecting curved rod 43 is taken as an example (the working principle of the connecting arc rod 44 is the same):

[0049] Insert the insertion rods 42 on the connecting curved rod 43 into the corresponding slots 41 respectively, tighten the threaded column 62 to make the adjustment rod 53 shift to the side of the installation rod 2, and the special-shaped top block 52 squeezes the installation rod 2, and the implant is firmly locked on the installation rod 2 through the connecting curved rod 43. The limit block 8 ensures that the installation rod 2 is not excessively squeezed and deformed. Subsequently, the delivery catheter 1 is inserted into the patient's body until it reaches the target area;

[0050] During the transportation process, the transportation component 3 ensures that the installation rod 2 and the implant thereon can pass smoothly. Once the target position is reached, the doctor adjusts the position of the shift frame 51 by rotating the threaded column 62, and the special-shaped top block 52 on the shift frame 51 gradually separates from the installation rod 2. Under the action of the spring piece 71, the installation rod 2 is driven to rotate around the rotation axis 32, and the connecting curved rod 43 is separated from the implant, so that the implant is released from the installation rod 2 and released to the target area.

[0051] After the operation, the threaded column 62 is tightened, the elastic member 7 pushes the mounting rod 2 to reset, and the doctor withdraws the delivery catheter 1 from the patient's body. During the whole process, the anti-misoperation member 6 ensures that the doctor avoids misoperation when adjusting the position of the shift frame 51, thereby improving the safety and convenience of the operation. In addition, the number of mounting rods 2 can be selected between 2 and 6 according to actual needs to adapt to different types of implants and surgical needs. Example 2

[0052] See also Fig.11 , the utility model provides a technical solution:

[0053] Different from Example 1, this scheme provides another implementation of the connecting member 4: the connecting member 4 includes a slot 41 arranged at the end of the mounting rod 2, and an insertion rod 42 is movably arranged in the slot 41. The slot 41 and the insertion rod 42 are interference fit, so that the slot 41 and the insertion rod 42 will not be easily separated, thereby avoiding accidental release of the implant. A connecting arc rod 44 is arranged on the insertion rod 42, which can lock and position the implant with a connecting ear. The specific method of use is the same as that of Example 1. Example 3

[0054] See also Figure 12-13 , the utility model provides a technical solution:

[0055] Different from Example 1, the side of the connecting curved rod 43 and the connecting arc rod 44 contacting the implant is provided with an anti-slip layer 9 to increase the contact friction between the connecting curved rod 43 and the connecting arc rod 44 and the implant, further avoiding accidental release.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0057] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is determined by the appended claims.

Claims

1. An implant delivery device, comprising a delivery catheter (1), characterized in that: Also included are: A mounting rod (2), wherein the mounting rod (2) is arranged inside the delivery conduit (1); A delivery assembly (3), wherein the delivery assembly (3) is arranged in a delivery catheter (1) and connected to a plurality of mounting rods (2), and is used to drive the mounting rods (2) to lock and position an implant, and can release the implant in a target area by adjusting the mounting rods (2), wherein a plurality of mounting rods (2) are provided, and the delivery assembly (3) comprises a plurality of positioning frames (31) respectively arranged in the delivery catheter (1), wherein a rotating shaft (32) is rotatably arranged on each of the positioning frames (31), wherein the plurality of mounting rods (2) are respectively arranged on the rotating shaft (32), wherein each of the mounting rods (2) is provided with a connecting piece (4) for connecting the implant, wherein a releasing piece (5) in contact with the plurality of mounting rods (2) is provided in the delivery catheter (1), and is used to adjust the mounting rods (2) to release the implant, and wherein each of the mounting rods (2) is provided with an elastic piece (7) for controlling the resetting of the mounting rods (2).

2. The implant delivery device according to claim 1, characterized in that: The connecting member (4) comprises a slot (41) arranged at the end of the mounting rod (2), an insert rod (42) being movably arranged in the slot (41), the slot (41) and the insert rod (42) being interference fit, and a connecting bent rod (43) being arranged on the insert rod (42).

3. The implant delivery device according to claim 2, characterized in that: The release member (5) comprises a shift frame (51) slidably arranged in the delivery conduit (1); a special-shaped top block (52) is arranged at one end of the shift frame (51) close to the mounting rod (2); the special-shaped top block (52) is capable of contacting and pressing the mounting rod (2); an adjustment rod (53) is arranged at one end of the shift frame (51) away from the special-shaped top block (52); and an anti-mis-touch member (6) is arranged in the delivery conduit (1) for adjusting the position of the adjustment rod (53) and preventing mis-touch.

4. The implant delivery device according to claim 3, characterized in that: The anti-mis-touch component (6) comprises an internal thread (61) arranged at an end of the delivery conduit (1) away from the mounting rod (2), a threaded column (62) being threadedly connected to the internal thread (61), and the adjustment rod (53) is rotatably connected to the threaded column (62) via a bearing.

5. The implant delivery device according to claim 4, characterized in that: The elastic member (7) comprises a plurality of spring sheets (71) respectively arranged on the mounting rod (2), and the ends of the spring sheets (71) are connected to the delivery conduit (1).

6. The implant delivery device according to claim 5, characterized in that: A plurality of limit blocks (8) are arranged on the special-shaped top block (52), and the limit blocks (8) are respectively capable of contacting adjacent mounting rods (2).

7. The implant delivery device according to claim 6, characterized in that: The number of the mounting rods (2) is 2-6.

8. The implant delivery device according to claim 1, characterized in that: The connecting member (4) comprises a slot (41) arranged at the end of the mounting rod (2), an insert rod (42) being movably arranged in the slot (41), the slot (41) and the insert rod (42) being interference fit, and a connecting arc rod (44) being arranged on the insert rod (42).

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