Stent setter and stent setting device

Abstract

The stent implanting device and the stent implanting device provided by the embodiment of the application relate to the field of stent implanting devices. The embodiment aims to improve the problem that the tissue in the human body is not easy to fix when the existing stent implanting device punctures. The stent implanting device comprises a containing part, a shuttle part, a puncture head and a guide wire lumen. The shuttle part is accommodated in the containing part, the puncture head is connected with the distal end of the shuttle part, the guide wire lumen extends along the direction from the proximal end of the containing part to the distal end of the containing part, and the distal end of the containing part is provided with an outside opening for the traction wire to pass out of the guide wire lumen. The stent implanting device comprises a traction wire and a stent implanting device. The distal end of the traction wire is used for anchoring the target tissue and guiding the stent implanting device to puncture into the target tissue. In the puncture process of the stent implanting device, the puncture head is arranged away from the traction wire due to the misalignment of the outside opening and the puncture head, and the puncture of the puncture head does not interfere with the position of the traction wire, so that the traction wire can always fix the target tissue in the puncture process of the puncture head.

Description

Technical Field

[0001] This invention relates to the field of stent placement devices, and more specifically, to a stent placement device and a stent placement apparatus. Background Technology

[0002] With the development of endoscopic technology and the maturity of endoscopic surgery, more and more endoscopic organ anastomosis procedures are emerging. Examples include gastropancreatic pseudocyst stent anastomosis, duodenal-biliary anastomosis, gastrointestinal anastomosis, and gastrointestinal-cholecystostomy. Among these, gastrointestinal-cholecystostomy involves inserting a stent placement device through the stomach or duodenum wall into the target location, the gallbladder. The distal end of a fully covered double-mushroom-head stent is placed in the gallbladder, and the proximal end is placed in the stomach or duodenum, thus creating a new pathway between the digestive tract and the gallbladder. Then, using a gastroscopy and the newly constructed pathway, gallstones are removed from the gallbladder using a stone retrieval basket. This achieves endoscopic gallbladder-preserving stone removal, providing a new treatment option for patients with gallbladder disease who are unsuitable for surgery, and also offering a treatment method that preserves gallbladder function for patients with good gallbladder function, improving their long-term quality of life.

[0003] When using a stent placement device for puncture, the movement of tissues within the body is difficult to fix, making puncture entry difficult, resulting in prolonged operation time and unnecessary damage. Summary of the Invention

[0004] The present invention includes, for example, providing a stent implanter that can improve the problem of tissue movement and difficulty in fixation during puncture with existing stent implanters.

[0005] The present invention also aims to provide a stent placement device that can improve the problem that tissue movement within the human body is difficult to fix during puncture with existing stent placement devices.

[0006] The embodiments of the present invention can be implemented as follows:

[0007] Embodiments of the present invention provide a stent implanter, comprising: a receiving member, a shuttle member, a puncture head, and a guide wire channel;

[0008] The shuttle is housed within the receiving container, and the piercing head is connected to the distal end of the shuttle;

[0009] The guidewire channel extends from the proximal end to the distal end of the receiver, and the distal end of the receiver has an outer opening through which the traction wire in the guidewire channel passes.

[0010] In addition, the stent placement device provided in the embodiments of the present invention may also have the following additional technical features:

[0011] Optionally, the receiver has an inner wall and an outer wall, with a portion of the outer wall protruding to form a protrusion, and the guide wire cavity is disposed inside the protrusion.

[0012] Optionally, the receiving element has an inner wall and an outer wall, with the outer wall recessed toward the inner wall to form a groove;

[0013] The stent placement device also includes a first membrane, which covers the outer wall of the receiving element, and a guide wire channel is formed between the groove and the first membrane.

[0014] Optionally, the receiving element has an inner wall and an outer wall, and the guidewire channel is disposed between the outer wall and the inner wall.

[0015] Optionally, the receiving element has an inner wall and an outer wall, with the inner wall forming a guide wire cavity between it and the shuttle element.

[0016] Optionally, the receiving element includes an outer tube and a branch tube; the shuttle element is housed inside the outer tube; the inner cavity of the branch tube forms a guide wire channel, which is arranged side by side with the branch tube; and the outer opening is located at the distal end of the branch tube.

[0017] Optionally, the branch tube has a receiving cavity and a guidewire cavity, with the outer tube housed within the receiving cavity.

[0018] Optionally, the stent implanter also includes a second membrane; the branch tube is located outside the outer tube, and the branch tube and the outer tube are covered together by the second membrane to form a whole.

[0019] Embodiments of the present invention also provide a stent placement device. The stent placement device includes a traction wire and a stent inserter;

[0020] The traction wire consists of an anchor head and a traction wire that are connected to each other. The anchor head is used to anchor the target tissue, and the traction wire is used to pass through the guide wire cavity through the outer opening to guide the puncture of the puncture head.

[0021] The beneficial effects of the stent placement device and stent placement apparatus of the present invention include, for example:

[0022] The stent placement device includes a guidewire channel for threading a traction wire. The traction wire is inserted into the target tissue via endoscopic puncture. The distal end of the traction wire can be anchored to the target tissue, facilitating the stent placement device's insertion into the organ. During stent placement, because the outer opening is offset from the puncture head, and the puncture head and traction wire are also staggered, the puncture of the puncture head does not interfere with the position of the traction wire. This ensures that the traction wire can consistently pull closer to and fix the target tissue during puncture, aiding in tissue fixation and improving puncture accuracy. After the stent placement device is in place, the double-mushroom-head stent is released, anastomosing the two organs. This improves surgical efficiency and reduces unnecessary damage.

[0023] The stent placement device, including the traction wire and the aforementioned stent placement device, can improve the problem that tissue movement within the human body is difficult to fix during puncture with existing stent placement devices. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the stent placement device provided in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the handle portion of the stent inserter provided in an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the puncture head of the stent implanter provided in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the stent placement device and the guidewire cavity provided in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the stent placement device provided in an embodiment of the present invention, showing the traction wire passing through the guide wire cavity;

[0030] Figure 6 This is a schematic diagram of the structure of the stent placement device and the traction wire provided in an embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the first state of the stent placement device provided in an embodiment of the present invention puncturing the tissue wall under the guidance of a traction wire;

[0032] Figure 8 This is a schematic diagram of the second state of the stent placement device provided in an embodiment of the present invention puncturing the tissue wall under the guidance of a traction wire;

[0033] Figure 9 This is a schematic diagram of the third state of the stent placement device provided in an embodiment of the present invention puncturing the tissue wall under the guidance of a traction wire;

[0034] Figure 10 This is a schematic diagram of the fourth state of the stent placement device provided in an embodiment of the present invention puncturing the tissue wall under the guidance of a traction wire;

[0035] Figure 11 This is a schematic diagram of the scaffold after tissue anastomosis provided in an embodiment of the present invention;

[0036] Figure 12 This is a schematic diagram of the first configuration of the guidewire cavity provided in an embodiment of the present invention;

[0037] Figure 13 This is a schematic diagram of a second configuration of the guidewire cavity provided in an embodiment of the present invention;

[0038] Figure 14 A schematic diagram of a third configuration of the guidewire cavity provided in an embodiment of the present invention;

[0039] Figure 15 This is a schematic diagram of the fourth configuration of the guidewire cavity provided in an embodiment of the present invention;

[0040] Figure 16 A first-view structural schematic diagram of the fifth configuration of the guidewire cavity provided in an embodiment of the present invention;

[0041] Figure 17 A second-view structural schematic diagram of the fifth configuration of the guidewire cavity provided in an embodiment of the present invention;

[0042] Figure 18 This is a schematic diagram of the sixth configuration of the guidewire cavity provided in an embodiment of the present invention.

[0043] Icons: 10-Stent placement device; 100-Rear handle; 110-Conductive socket; 120-Front handle; 130-Receiving element; 131-Inner wall; 132-Outer wall; 133-Groove; 134-First membrane; 140-Shuttle element; 141-Conductor; 142-Punch head; 200-Anchor head; 210-Traction wire; 300-Guide wire channel; 400-Outer tube; 410-Branch tube; 411-Receiving channel; 420-Third tube; 430-Second membrane; 600-Outer tissue wall; 610-Target tissue wall; 700-Stent; 710-First mushroom head; 720-Second mushroom head. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0046] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0047] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0048] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0049] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0050] The following is combined with Figures 1 to 18 The stent placement device 10 provided in this embodiment will be described in detail.

[0051] Please refer to Figures 1 to 4 An embodiment of the present invention provides a stent placement device 10, including a receiving member 130, a shuttle member 140, a puncture head 142, and a guide wire channel 300; the shuttle member 140 is housed within the receiving member 130, and the puncture head 142 is connected to the distal end of the shuttle member 140; the guide wire channel 300 extends along the direction from the proximal end to the distal end of the receiving member 130, and the distal end of the receiving member 130 is provided with an outer opening for the traction wire 210 within the guide wire channel 300 to pass through.

[0052] It should be noted that, as will be understood by those skilled in the art, throughout this text, during the use of the stent implanter 10, the distal end of the stent implanter 10 refers to the end of the stent implanter 10 furthest from the doctor, and the proximal end of the stent implanter 10 refers to the end of the stent implanter 10 closest to the doctor. Therefore, relatively speaking, the distal end of a component refers to the end of the component that is relatively furthest from the doctor during use; the proximal end of a component refers to the end of the component that is relatively closest to the doctor during use. Figure 1In the direction from the distal end to the proximal end of the stent implanter 10, the various components of the stent implanter 10 are approximately located in... Figure 1 They are displayed sequentially.

[0053] Continue to refer to Figure 1 , combined Figure 2 The stent inserter 10 also includes a rear handle 100 and a front handle 120 offset along the direction from the proximal end to the distal end of the receiver 130. The proximal end of the shuttle 140 is connected to the rear handle 100, the distal end of the shuttle 140 is connected to the puncture head 142, and the proximal end of the receiver 130 is connected to the front handle 120. A space is formed between the receiver 130 and the shuttle 140 for loading the compression stent 700. The front handle 120 can control the receiver 130 to move forward or backward for releasing the stent 700.

[0054] In this embodiment, the stent inserter 10 has an electrically conductive puncture function; therefore, the puncture head 142 is a thermal puncture head 142. The shuttle 140 is made of a conductive metal material and has a conductive function.

[0055] Reference Figure 2 as well as Figure 3 A conductive socket 110 is provided on the rear handle 100. The conductive socket 110 is connected to the proximal end of the shuttle 140, and the distal end of the shuttle 140 is connected to the thermal puncture head 142 through a conductor 141. The conductive socket 110 can be connected to a high-frequency generator to transmit high-frequency electricity to the front end of the thermal puncture head 142 for cutting.

[0056] Reference Figure 4 The guidewire channel 300 extends from the proximal to the distal end of the receiving member 130. The guidewire channel 300 is used for the insertion of the traction wire 210. The distal end of the traction wire 210 is connected to a fixation member for securing it to the target tissue. The traction wire 210 is inserted into the guidewire channel 300 through an external opening to guide the puncture of the puncture head 142. Specifically, the fixation member is an anchor head 200. The anchor head 200 is used to anchor the target tissue. Further, the anchor head 200 is T-shaped.

[0057] Reference Figure 5 , combined Figure 4 The traction wire 210 is inserted into the guide wire cavity 300 through the outer opening. (Refer to...) Figure 6 The outer opening is located at the rear end of the puncture head 142 and outside the receiving part 130. The traction wire 210 and the anchor head 200 located outside the outer opening can be staggered from the puncture head 142. During the puncture process, the puncture head 142 neither interferes with the guiding function of the traction wire 210 nor interferes with the anchor head 200 anchoring the target tissue.

[0058] It should be noted that the "outer opening" is used to connect the guide wire cavity 300 with the outside of the receiving member 130. The outer opening can penetrate the entire wall thickness of the receiving member 130, or it can penetrate from the middle of the wall of the receiving member 130 to the outer wall 132, or it can be located on the outside of the outer wall 132 of the receiving member 130, depending on the setting position of the guide wire cavity 300. However, the ultimate goal is to achieve external communication between the guide wire cavity 300 and the receiving member 130, so that the traction wire 210 enters the guide wire cavity 300 through the outer opening, and the traction wire 210 and the anchor head 200 located outside the outer opening remain outside the receiving member 130.

[0059] Reference Figure 7 In use, the traction wire 210 is first inserted into the target tissue via a puncture needle to insert the anchor head 200. Combined with... Figure 5 Then, the traction wire 210 is inserted into the guide wire channel 300 on the support inserter 10. Continue referring to... Figure 7 The stent inserter 10 is inserted into the body cavity along the traction wire 210. By tightening the traction wire 210, the anchor head 200 tightens the target tissue wall 610, ensuring that the target tissue wall 610 does not move. The high-frequency generator is connected to the conductive socket 110, and puncture is performed with power on. (Refer to...) Figure 8 as well as Figure 9 The stent implanter 10 first punctures the outer tissue wall 600, and through the fixation of the anchor head 200, the stent implanter 10 can accurately puncture and enter the target tissue wall 610. (Refer to...) Figure 10 as well as Figure 11 By pulling the receiving part 130 backward by retracting the front handle 120, the first mushroom head 710 of the stent 700 is released into the target tissue; then the entire stent placement receiving part 130 is retracted into the outer tissue to release the second mushroom head 720 of the stent 700. At this point, the stent 700 compressed in the receiving part 130 is completely released. After the stent 700 is released, the stent 700 establishes a new channel between the outer tissue and the target tissue, achieving the purpose of tissue anastomosis.

[0060] Therefore, in order to ensure that the anchor head 200 remains anchored to the target tissue during the puncture process of the puncture head 142 and that the target tissue does not move, the puncture head 142 must not interfere with the traction wire 210 and the anchor head 200 during the puncture process. Thus, the outer opening must be offset from the puncture head 142. During the puncture process of the puncture head 142 puncturing the target tissue wall 610, the traction wire 210 can continue to tighten the anchor head 200 to anchor the target tissue. After the puncture head 142 punctures the target tissue, it will not come into contact with the anchor head 200. Throughout the puncture process, the puncture head 142 neither interferes with the guiding function of the traction wire 210 nor with the anchoring position of the anchor head 200, effectively preventing the target tissue from moving and improving the accuracy of the puncture.

[0061] The distance between the outer opening and the puncture head 142 is referenced. Figure 7 It is equal to or greater than the distance between the outer tissue wall 600 and the target tissue wall 610, or greater than the thickness of the target tissue wall 610.

[0062] As described above, the stent placement device 10 is punctured via an endoscope through a traction wire 210 pre-anchored to the target tissue. The traction wire 210 not only anchors the target tissue but also brings the outer tissue closer to the target tissue, preventing the target tissue from shifting and facilitating the stent placement device 10 to enter the target tissue, thus reducing the prolongation of operation time and unnecessary thermal damage caused by tissue shifting.

[0063] The configuration of the guidewire cavity 300 and the outer opening includes, but is not limited to, the configurations listed below.

[0064] Reference Figure 12 The receiving member 130 has an inner wall 131 and an outer wall 132. A portion of the outer wall 132 protrudes to form a protrusion, and the guide wire cavity 300 is formed inside the protrusion. In this embodiment, an outer opening is formed on the protrusion, and the outer opening extends from the outer wall 132 and through the guide wire cavity 300 along the wall thickness direction of the receiving member 130.

[0065] Specifically, the protrusion extends from the distal end to the proximal end of the receiver 130, with the distal end of the protrusion located between the puncture head 142 and the front handle 120.

[0066] Reference Figure 13 The receiving member 130 has an inner wall 131 and an outer wall 132. The outer wall 132 is recessed towards the inner wall 131 to form a groove 133. The stent inserter 10 also includes a first membrane 134, which covers the outer wall 132 of the receiving member 130. A guidewire channel 300 is formed between the groove 133 and the first membrane 134. Specifically, the first membrane 134 can be a thermoplastic film or a heat-shrinkable film. In this embodiment, the opening at the distal end of the guidewire channel 300 directly forms an outer opening; or the outer opening is formed on the first membrane 134. Specifically, the outer opening is located between the puncture head 142 and the front handle 120.

[0067] Reference Figure 14 The receiving member 130 has an inner wall 131 and an outer wall 132, and the guidewire cavity 300 is disposed between the outer wall 132 and the inner wall 131. In this embodiment, the outer opening is formed on the outer wall 132 of the receiving member 130 and corresponds to the guidewire cavity 300 along the axial direction. The outer opening extends along the thickness direction of the receiving member 130 and communicates directly with the guidewire cavity 300; or it is offset from the guidewire cavity 300 along the axial direction, and a third channel is also provided between the outer opening and the guidewire cavity 300. Similarly, the outer opening is located between the puncture head 142 and the front handle 120.

[0068] Continue to refer to Figure 15 The receiving member 130 has an inner wall 131 and an outer wall 132, and a guide wire channel 300 is disposed between the inner wall 131 and the shuttle member 140. Specifically, the support inserter 10 also includes a third tube 420 disposed between the inner wall 131 and the shuttle member 140, the inner cavity of the third tube 420 forming the guide wire channel 300. Specifically, the third tube 420 can be bonded to the inner wall 131 by adhesive or heat fusion.

[0069] In this embodiment, the outer opening extends through the receiver 130 along its thickness direction and communicates with the guidewire channel 300. Similarly, the outer opening is located between the puncture head 142 and the front handle 120.

[0070] Reference Figure 16 as well as Figure 17 The receiving component 130 includes an outer tube 400 and a branch tube 410; the shuttle component 140 is housed within the outer tube 400; the inner cavity of the branch tube 410 forms a guide wire channel 300, which is arranged side by side with the branch tube 410; the outer opening is located at the distal end of the branch tube 410.

[0071] In this embodiment, the outer opening is formed on the outer wall 132 of the branch tube 410, and the outer opening extends along the thickness direction of the branch tube 410, that is, it extends from the outer wall 132 of the branch tube 410 to the inner wall 131, and communicates with the guide wire cavity 300.

[0072] It should be noted that the term "side by side" in this article does not require the angle between the two elements to be 0°. They can be slightly tilted, for example, within the range of 2°-10°, and are still considered to be side by side. Example: The angle between the guidewire channel 300 and the branch tube 410 can also be 2°, 5°, etc.

[0073] That is, the guidewire channel 300 is parallel to the branch tube 410, or the guidewire channel 300 is slightly tilted at an angle relative to the branch tube 410.

[0074] The connection relationship between the branch pipe 410 and the outer pipe 400 is as follows.

[0075] In the first embodiment, the branch tube 410 is fixed to the outer tube 400. The branch tube 410 is fixed to the outer tube 400 with adhesive. The distal end of the branch tube 410 is located between the front handle 120 and the puncture head 142. The branch tube 410 may be made of heat shrink tubing.

[0076] The second implementation method is described in reference to... Figure 16 as well as Figure 17The branch tube 410 has a receiving cavity 411 and a guidewire cavity 300, and the outer tube 400 is housed in the receiving cavity 411. Similarly, the receiving cavity 411 is parallel to the guidewire cavity 300, or the guidewire cavity 300 is slightly inclined relative to the receiving cavity 411.

[0077] The third implementation method, refer to Figure 18 The stent placement device also includes a second membrane 430; the branch tube 410 is located outside the outer tube 400, and the branch tube 410 and the outer tube 400 are covered together by the second membrane 430 to form a whole. Specifically, the second membrane 430 can be a thermoplastic film or a heat-shrinkable film.

[0078] It should be noted that the stent placement device 10 provided in this embodiment can pass through the 3.7mm endoscopic clamp channel. The receiving member 130 is a variable-diameter receiving member 130. The outer diameter of the receiving member 130 used to load the stent segment is large, while the outer diameter of the receiving member 130 in the region parallel to the guidewire channel 300 is small. This ensures that the guidewire channel 300 and the receiving member 130 can still pass through the 3.7mm endoscopic clamp channel after being heat-shrinked together. See details. Figure 4 as well as Figure 5 .

[0079] The stent placement device 10 provided in this embodiment has at least the following advantages: The stent placement device 10 includes a guide wire channel 300 for threading a traction wire 210. The traction wire 210 is inserted into the target tissue via endoscopic puncture. The traction wire 210 can anchor the target tissue, facilitating the puncture of the stent placement device 10 into the organ. During the puncture process, because the outer opening of the stent placement device 10 is offset from the puncture head 142, and the puncture head 142 is staggered from the traction wire 210, the puncture of the puncture head 142 will not interfere with the position of the traction wire 210. This allows the traction wire 210 to always be able to pull closer to and fix the target tissue during the puncture of the puncture head 142, which helps to fix the punctured tissue and improves puncture accuracy. After the stent placement device 10 is in place, the double mushroom-head stent 700 is released to anastomose the two organs. This improves surgical efficiency and reduces unnecessary damage.

[0080] Embodiments of the present invention also provide a stent placement device. The stent placement device includes a traction wire 210 and a stent placement device 10; the traction wire 210 includes an anchor head 200 and the traction wire 210 connected to each other. The anchor head 200 is used to anchor the target tissue, and the traction wire 210 is used to pass through the guide wire cavity 300 through the outer opening to guide the puncture of the puncture head 142. This can improve the problem that tissue movement within the human body is difficult to fix during puncture with the existing stent placement device 10.

[0081] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A stent placement device, characterized in that, include: The device includes a receiving element (130), a shuttle element (140), a puncture head (142), and a guide wire channel (300). The shuttle (140) is housed within the receiving member (130), and the piercing head (142) is connected to the distal end of the shuttle (140); The guidewire channel (300) extends from the proximal end of the receiver (130) to the distal end of the receiver (130), and the distal end of the receiver (130) is provided with an outer opening through which the traction wire (210) in the guidewire channel (300) passes. The outer opening is offset from the puncture head (142). The outer opening is used to connect the guide wire cavity (300) and the outside of the receiving member (130), so that when the traction wire (210) passes through the outer opening into the guide wire cavity (300), the traction wire (210) located outside the outer opening is outside the receiving member (130). The distance between the outer opening and the puncture head (142) is equal to or greater than the distance between the outer tissue wall (600) and the target tissue wall (610), or greater than the thickness of the target tissue wall (610).

2. The stent placement device according to claim 1, characterized in that: The receiving member (130) has an inner wall (131) and an outer wall (132), a portion of the outer wall (132) protruding to form a protrusion, and the guide wire cavity (300) is disposed inside the protrusion.

3. The stent placement device according to claim 1, characterized in that: The receiving member (130) has an inner wall (131) and an outer wall (132), the outer wall (132) being recessed toward the inner wall (131) to form a groove (133). The stent placement device also includes a first membrane (134) that covers the outer wall (132) of the receiving member (130), and the guide wire cavity (300) is formed between the groove (133) and the first membrane (134).

4. The stent placement device according to claim 1, characterized in that: The receiving member (130) has an inner wall (131) and an outer wall (132), and the guide wire channel (300) is disposed between the outer wall (132) and the inner wall (131).

5. The stent placement device according to claim 1, characterized in that: The receiving member (130) has an inner wall (131) and an outer wall (132), and the guide wire channel (300) is disposed between the inner wall (131) and the shuttle member (140).

6. The stent placement device according to claim 1, characterized in that: The receiving member (130) includes an outer tube (400) and a branch tube (410); the shuttle member (140) is housed in the outer tube (400); the inner cavity of the branch tube (410) forms the guide wire channel (300), the guide wire channel (300) and the outer tube (400) are arranged side by side; the outer opening is opened at the distal end of the branch tube (410).

7. The stent placement device according to claim 6, characterized in that: The branch tube (410) has a receiving cavity (411) and the guide wire cavity (300), and the outer tube (400) is housed in the receiving cavity (411).

8. The stent placement device according to claim 6, characterized in that: The stent placement device also includes a second membrane (430); the branch tube (410) is located outside the outer tube (400), and the branch tube (410) and the outer tube (400) are covered together by the second membrane (430) to form a whole.

9. A stent placement device, characterized in that: The stent placement device includes a traction wire (210) and a stent placement device as described in any one of claims 1-8; The traction wire (210) includes an anchor head (200) and a traction wire (210) connected to each other. The anchor head (200) is used to anchor the target tissue, and the traction wire (210) is used to pass through the outer opening into the guide wire cavity (300) to guide the puncture of the puncture head (142).

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