Support recovery device

Abstract

The utility model discloses a stent recycling device, and particularly relates to the technical field of medical instruments, the stent recycling device comprises an outer tube assembly, an inner tube assembly and a hook assembly, the outer tube assembly comprises an outer tube and an outer tube handle which are detachably connected, and the outer tube can extend into a human body from a forceps channel hole of an endoscope; the inner pipe assembly comprises an inner pipe and an inner pipe handle which are detachably connected, the end, away from the inner pipe handle, of the inner pipe can sequentially penetrate through the outer pipe handle and the outer pipe, and a locking assembly is arranged in the outer pipe handle and used for limiting movement of the inner pipe; the hook assembly comprises a hook and a hook handle which are detachably connected, the end, away from the hook handle, of the hook can sequentially penetrate through the inner pipe handle and the inner pipe and is used for hooking the support recovery line, the hook can move relative to the inner pipe assembly, and the inner pipe handle can be detachably connected with the hook handle. The non-invasive stent recovery device is simple in structure, convenient to operate and capable of realizing non-invasive stent recovery, relieving pain of a patient and avoiding secondary injury.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a support recovery device. Background Art

[0002] The application of interventional radiology and endoscopic technology can place stents with self-expanding properties into the human lumen to play a therapeutic role, such as placing esophageal stents to treat anastomotic stenosis after esophageal surgery. Depending on the treatment situation, some stents need to be removed and recovered from the lumen after the treatment is completed. Since the stent relies on its own continuous expansion force to support and position in the lumen, it cannot be removed using existing medical devices. At present, there is no special device for recovering intraluminal stents. Generally, intraluminal stents are removed through surgical surgery. However, surgery will increase the patient's pain and prolong the recovery period. Utility Model Content

[0003] The purpose of the utility model is to provide a stent recovery device to solve the problems existing in the above-mentioned prior art, with a simple structure, convenient operation, and the ability to non-invasively recover the stent, thereby alleviating the pain of the patient and avoiding secondary injury.

[0004] To achieve the above purpose, the utility model provides the following solutions:

[0005] The utility model provides a support recovery device, comprising:

[0006] An outer tube assembly, the outer tube assembly comprising an outer tube and an outer tube handle, the outer tube and the outer tube handle being detachably connected, and the outer tube can be extended into the human body through the clamp channel hole of the endoscope;

[0007] An inner tube assembly, the inner tube assembly comprising an inner tube and an inner tube handle, the inner tube being detachably connected to the inner tube handle, the end of the inner tube away from the inner tube handle being able to pass through the outer tube handle and the outer tube in sequence, the inner tube being able to move relative to the outer tube assembly, a locking assembly being arranged in the outer tube handle, the locking assembly being used to limit the movement of the inner tube;

[0008] A hook assembly, the hook assembly includes a hook and a hook handle, the hook is detachably connected to the hook handle, the end of the hook away from the hook handle can pass through the inner tube handle and the inner tube in sequence, the hook is used to hook the bracket recovery line, the hook can move relative to the inner tube assembly, and the inner tube handle can be detachably connected to the hook handle.

[0009] Preferably, the outer tube is made of polytetrafluoroethylene, the inner tube is made of polypropylene, and the hook is made of stainless steel.

[0010] Preferably, the outer tube handle includes an outer shell, a connecting piece and the locking assembly, the connecting piece is arranged inside the outer shell, one end of the outer tube extends into the connecting piece, the locking assembly is threadedly connected to the connecting piece, and the end surface of the locking assembly extending into the connecting piece can abut against the outer tube.

[0011] Preferably, the locking assembly includes a locking member housing, a first adjusting member, a second adjusting member, a locking member and a buffer member, the locking member housing, the first adjusting member, the second adjusting member, the locking member and the buffer member are all sleeved on the outside of the inner tube, one end of the locking member housing is threadedly connected to the connecting member, the buffer member and the locking member are arranged inside the locking member housing, the buffer member is closer to the connecting member than the locking member, one end of the first adjusting member can be inserted into an end of the locking member housing away from the connecting member, and can be moved relative to the locking member housing along the axial direction of the locking member housing, the outer side surface of the other end of the first adjusting member is threadedly connected to the inner side surface of the second adjusting member, the outer side surface of the second adjusting member protrudes from the outer shell, and rotating the second adjusting member can make the first adjusting member move relative to the locking member housing in a direction close to the locking member until the end surface of the first adjusting member is in contact with the locking member, and can make the locking member shrink radially until the inner side wall of the locking member abuts against the outer side wall of the inner tube.

[0012] Preferably, the outer side surface of the locking member close to one end of the first adjusting member is a first conical surface, the small end surface of the first conical surface and the larger end surface are close to the first adjusting member, the inner circumferential surface of the first adjusting member is a second conical surface matching the surface of the first conical surface, and the small end surface of the second conical surface and the larger end surface are away from the locking member.

[0013] Preferably, the locking member is circumferentially spaced apart with a plurality of expansion grooves extending along the axis of the locking member, the expansion grooves radially penetrating one end of the locking member close to the first conical surface, and the first adjusting member can cause the expansion grooves to shrink and deform, thereby causing the inner side wall of the locking member close to the end of the first conical surface to abut and be fixed against the outer side wall of the inner tube.

[0014] Preferably, a male Luer connector is provided at one end of the inner tube handle away from the inner tube, and the male Luer connector is sleeved outside the hook, and a female Luer connector cooperating with the male Luer connector is provided at one end of the hook handle close to the hook.

[0015] Preferably, a rounded corner is provided on the end surface edge of the outer tube away from the outer tube handle, and a spherical guide is provided on one end of the inner tube away from the inner tube handle.

[0016] Preferably, the end of the hook away from the hook handle has a certain bending angle.

[0017] Compared with the prior art, the utility model has achieved the following technical effects:

[0018] The utility model provides a stent recovery device, wherein an inner tube passes through an outer tube handle and an outer tube in sequence, and the outer tube assembly and the inner tube assembly are locked by a locking assembly, the outer tube extends from the clamp channel hole of an endoscope into the human body to a position near the stent, and then a hook passes through the inner tube handle and the inner tube in sequence, and hooks the stent recovery line, and then the inner tube handle is fixedly connected to the hook handle, the locking assembly is unlocked, the inner tube is pulled outward, and at the same time, the hook pulls the stent to be recovered, so that the front end of the stent is gradually pulled into the outer tube, and then the outer tube is pushed into the human body, the outer tube wall separates the stent from the human body cavity and enables the stent to enter the outer tube completely, and the stent is recovered non-invasively. Compared with the hook directly pulling out the stent, the outer tube wall peels off the stent from the human body cavity, which can reduce the patient's pain and reduce secondary injuries. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 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.

[0020] Figure 1 It is a structural schematic diagram of the support recovery device of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the support recovery device of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the support recovery device of the utility model from another angle;

[0023] Figure 4 It is an enlarged view of the outer tube handle and the inner tube handle of the stent recovery device of the utility model;

[0024] Figure 5 It is an enlarged view of the inner tube handle and the hook handle of the stent recovery device of the present invention;

[0025] Figure 6 It is an enlarged view of the outer tube end of the stent recovery device of the utility model;

[0026] Figure 7 It is an enlarged view of the inner tube end of the stent recovery device of the utility model;

[0027] Figure 8 It is a partial enlarged view of the linear hook of the stent recovery device of the utility model;

[0028] Fig. 9 It is a partial enlarged view of a hook with a certain bending angle of the support recovery device of the utility model;

[0029] Fig.10 This is a diagram of the steps for using the support recovery device of the utility model.

[0030] In the figure: 1-outer tube assembly; 11-outer tube; 12-outer tube handle; 121-outer shell; 122-connecting piece; 123-locking piece housing; 124-first adjusting piece; 125-second adjusting piece; 126-locking piece; 127-buffer piece; 2-inner tube assembly; 21-inner tube; 22-inner tube handle; 23-spherical guide; 24-male Luer connector; 3-hook assembly; 31-hook; 32-hook handle; 33-female Luer connector; 4-bracket. DETAILED DESCRIPTION

[0031] 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.

[0032] The purpose of the utility model is to provide a stent recovery device to solve the problems existing in the above-mentioned prior art, with a simple structure, convenient operation, and the ability to non-invasively recover the stent, thereby alleviating the pain of the patient and avoiding secondary injury.

[0033] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] The utility model provides a support recovery device, such as Figure 1-3As shown, the invention comprises: an outer tube assembly 1, the outer tube assembly 1 comprises an outer tube 11 and an outer tube handle 12, the outer tube 11 is detachably connected to the outer tube handle 12, and the outer tube 11 can be extended into the human body from the clamp channel hole of the endoscope; an inner tube assembly 2, the inner tube assembly 2 comprises an inner tube 21 and an inner tube handle 22, the inner tube 21 is detachably connected to the inner tube handle 22, one end of the inner tube 21 away from the inner tube handle 22 can pass through the outer tube handle 12 and the outer tube 11 in sequence, and the inner tube 21 can move relative to the outer tube assembly 1 The outer tube handle 12 is provided with a locking assembly, which is used to limit the movement of the inner tube 21; the hook assembly 3, the hook assembly 3 includes a hook 31 and a hook handle 32, the hook 31 is detachably connected to the hook handle 32, the end of the hook 31 away from the hook handle 32 can pass through the inner tube handle 22 and the inner tube 21 in sequence, the hook is used to hook the recovery line of the bracket 4, the hook 31 can move relative to the inner tube assembly 2, and the inner tube handle 22 can be detachably connected to the hook handle 32. The inner tube 21 passes through the outer tube handle 12 and the outer tube 11 in sequence, and the outer tube assembly 1 and the inner tube assembly 2 are locked by the locking assembly. The outer tube 11 extends from the clamp channel hole of the endoscope into the human body and reaches the position near the stent 4. Then the hook 31 passes through the inner tube handle 22 and the inner tube 21 in sequence, and hooks the recovery line of the stent 4. Then the inner tube handle 22 is fixedly connected with the hook handle 32, the locking assembly is unlocked, the inner tube 21 is pulled outward, and at the same time, the hook 31 pulls the stent to be recovered, so that the stent 4 is deformed, and the front end of the stent 4 is gradually pulled into the outer tube 11, and then the outer tube 11 is pushed into the human body. The outer tube wall separates the stent 4 from the human body cavity and allows the stent 4 to enter the outer tube 11 completely, and the stent 4 is recovered non-invasively. Compared with the hook 31 directly pulling out the stent 4, the outer tube wall peels the stent 4 from the human body cavity, which can reduce the patient's pain and reduce secondary damage. The stent recovery device has a simple structure and is easy to operate.

[0035] It is further preferred in the embodiment of the utility model that the material of the outer tube 11 is polytetrafluoroethylene, the material of the inner tube 21 is polypropylene, and the material of the hook 31 is stainless steel. The polytetrafluoroethylene outer tube 11 is soft and smooth, which can reduce irritation to the human body.

[0036] It is further preferred in the embodiments of the present invention that Figure 4 As shown, the outer tube 11 handle 12 includes an outer shell 121, a connecting piece 122 and a locking assembly. The connecting piece 122 is arranged inside the outer shell 121, one end of the outer tube 11 extends into the connecting piece 122, the locking assembly is threadedly connected to the connecting piece 122, and the end surface of the locking assembly extending into the connecting piece 122 can abut against the outer tube 11.

[0037] In the embodiment of the present utility model, it is further preferred that the locking assembly includes a locking member housing 123, a first adjusting member 124, a second adjusting member 125, a locking member 126 and a buffer member 127. The locking member housing 123, the first adjusting member 124, the second adjusting member 125, the locking member 126 and the buffer member 127 are all sleeved outside the inner tube 21, one end of the locking member housing 123 is threadedly connected to the connecting member 122, and the buffer member 127 and the locking member 126 are arranged inside the locking member housing 123. The buffer member 127 is closer to the connecting member 122 than the locking member 126, and one end of the first adjusting member 124 can be inserted into the locking member housing 123 away from the connecting member 122. The first adjusting member 124 is connected to the outer side of the second adjusting member 125 by a threaded connection with the inner side of the second adjusting member 125. The outer side of the second adjusting member 125 protrudes from the outer shell 121. The second adjusting member 125 is rotated to move the first adjusting member 124 toward the locking member 126 relative to the locking member shell 123 until the end face of the first adjusting member 124 fits the locking member 126, and the locking member 126 can be contracted radially until the inner side wall of the locking member 126 abuts against the outer side wall of the inner tube 21, so that the locking member 126 can lock the inner tube 21, and the locking operation is simple and the locking speed is fast. The buffer member 127 can play a buffering role on the locking member 126. Preferably, the buffer member 127 is a rubber ring.

[0038] In the embodiment of the utility model, it is further preferred that the outer side surface of the locking member 126 close to one end of the first adjusting member 124 is a first conical surface, the small end surface of the first conical surface and the larger end surface are close to the first adjusting member 124, the inner circumferential surface of the first adjusting member 124 is a second conical surface that cooperates with the surface of the first conical surface, and the small end surface of the second conical surface and the larger end surface are away from the locking member 126, and the first conical surface is fitted with the second conical surface, which can increase the fitting area and improve the locking effect.

[0039] It is further preferred in the embodiment of the utility model that a plurality of expansion grooves extending along the axis of the locking member 126 are arranged at intervals in the circumferential direction of the locking member 126, and the expansion grooves radially penetrate the locking member 126 at one end close to the first conical surface. The first adjusting member 124 can shrink and deform the expansion grooves, thereby making the inner wall of the locking member 126 close to the end of the first conical surface abut and fix with the outer wall of the inner tube 21.

[0040] It is further preferred in the embodiments of the present invention that Figure 5 As shown, a male Luer connector 24 is provided at one end of the inner tube handle 22 away from the inner tube 21, and the male Luer connector 24 is sleeved outside the hook 31. A female Luer connector 33 that cooperates with the male Luer connector 24 is provided at one end of the hook handle 32 close to the hook 31, so that the connection and disassembly operations are convenient.

[0041] It is further preferred in the embodiments of the present invention that Figure 6 As shown, the end edge of the outer tube 11 away from the outer tube handle 12 is provided with a rounded corner, as shown in FIG. Figure 7 As shown, a spherical guide 23 is provided at one end of the inner tube 21 away from the inner tube handle 22, which can reduce stimulation to the human body.

[0042] It is further preferred in the embodiments of the present invention that Figure 8-9 As shown, the end of the hook 31 away from the hook handle 32 has a certain bending angle, which can hook the recovery line of the stent 4 of different sizes. When the size of the stent 4 is small, the recovery line of the stent 4 is close to the center of the human body cavity, and the straight hook 31 can conveniently hook the recovery line of the stent 4. When the size of the stent 4 is large, the recovery line of the stent 4 is far from the center of the human body cavity, and the hook 31 with a certain bending angle can conveniently hook the recovery line of the stent 4.

[0043] like Fig.10 As shown, the operating steps of using the support recovery device of the utility model are as follows:

[0044] Step 1: Insert the inner tube 21 into the outer tube assembly 1, adjust the locking assembly, and lock the outer tube assembly 1 and the inner tube 21 assembly 2;

[0045] Step 2: Using an endoscope, place the outer tube assembly 1 and the inner tube assembly 2 in the human body to a designated position;

[0046] Step 3: Insert the hook 31 into the inner tube assembly 2;

[0047] Step 4: Adjust the hook 31 so that the hook 31 extends out to hook the recovery line of the bracket 4;

[0048] Step 5: Connect and lock the inner tube handle 22 and the hook handle 32;

[0049] Step 6: Unlock the locking assembly to allow the inner tube 21 to move relative to the outer tube assembly 1;

[0050] Step 7: Keep the outer tube assembly 1 stationary and pull the inner tube assembly 2 outward;

[0051] Step 8: The hook 31 pulls the bracket, the bracket 4 is deformed, and the front end of the bracket is pulled into the outer tube 11;

[0052] Step 9: The inner tube assembly 2 and the hook assembly 3 remain stationary, and the outer tube 11 is pushed into the human body, and the stent 4 is peeled off from the human body cavity through the outer tube wall, so that the stent 4 completely enters the outer tube 11;

[0053] Step 10: Adjust the locking assembly and lock the outer tube assembly 1 and the inner tube assembly 2 again;

[0054] Step 11: withdraw the entire support recovery device to complete the support 4 recovery action.

[0055] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A stent recovery device, characterized in that: include: An outer tube assembly, the outer tube assembly comprising an outer tube and an outer tube handle, the outer tube and the outer tube handle being detachably connected, and the outer tube can be extended into the human body through the clamp channel hole of the endoscope; An inner tube assembly, the inner tube assembly comprising an inner tube and an inner tube handle, the inner tube being detachably connected to the inner tube handle, the end of the inner tube away from the inner tube handle being able to pass through the outer tube handle and the outer tube in sequence, the inner tube being able to move relative to the outer tube assembly, a locking assembly being arranged in the outer tube handle, the locking assembly being used to limit the movement of the inner tube; A hook assembly, the hook assembly includes a hook and a hook handle, the hook is detachably connected to the hook handle, the end of the hook away from the hook handle can pass through the inner tube handle and the inner tube in sequence, the hook is used to hook the bracket recovery line, the hook can move relative to the inner tube assembly, and the inner tube handle can be detachably connected to the hook handle.

2. The stent recovery device according to claim 1, characterized in that: The material of the outer tube is polytetrafluoroethylene, the material of the inner tube is polypropylene, and the material of the hook is stainless steel.

3. The stent recovery device according to claim 1, characterized in that: The outer tube handle includes an outer shell, a connecting piece and the locking assembly. The connecting piece is arranged inside the outer shell, one end of the outer tube extends into the connecting piece, the locking assembly is threadedly connected to the connecting piece, and the end surface of the locking assembly extending into the connecting piece can abut against the outer tube.

4. The stent recovery device according to claim 3, characterized in that: The locking assembly includes a locking member housing, a first adjusting member, a second adjusting member, a locking member and a buffer member, wherein the locking member housing, the first adjusting member, the second adjusting member, the locking member and the buffer member are all sleeved outside the inner tube, one end of the locking member housing is threadedly connected to the connecting member, the buffer member and the locking member are arranged inside the locking member housing, the buffer member is closer to the connecting member than the locking member, one end of the first adjusting member can be inserted into an end of the locking member housing away from the connecting member, and can be moved relative to the locking member housing along the axial direction of the locking member housing, the outer side surface of the other end of the first adjusting member is threadedly connected to the inner side surface of the second adjusting member, the outer side surface of the second adjusting member protrudes from the outer shell, and rotating the second adjusting member can make the first adjusting member move relative to the locking member housing in a direction close to the locking member until the end surface of the first adjusting member is in contact with the locking member, and can make the locking member shrink radially until the inner side wall of the locking member abuts against the outer side wall of the inner tube.

5. The stent recovery device according to claim 4, characterized in that: The outer side surface of the locking piece close to one end of the first adjusting piece is a first conical surface, the small end surface of the first conical surface and the larger end surface are close to the first adjusting piece, the inner circumferential surface of the first adjusting piece is a second conical surface matching the surface of the first conical surface, and the small end surface of the second conical surface and the larger end surface are away from the locking piece.

6. The stent recovery device according to claim 5, characterized in that: The locking member is provided with a plurality of expansion grooves extending along the axis of the locking member at intervals in the circumferential direction, and the expansion grooves radially penetrate one end of the locking member close to the first conical surface. The first adjusting member can shrink and deform the expansion grooves, thereby causing the inner side wall of the locking member close to the end of the first conical surface to abut and be fixed against the outer side wall of the inner tube.

7. The stent recovery device according to claim 1, characterized in that: A male Luer connector is arranged at one end of the inner tube handle away from the inner tube, and the male Luer connector is sleeved outside the hook. A female Luer connector matching with the male Luer connector is arranged at one end of the hook handle close to the hook.

8. The stent recovery device according to claim 1, characterized in that: A rounded corner is arranged on the edge of the end surface of the outer tube away from the outer tube handle, and a spherical guide is arranged on one end of the inner tube away from the inner tube handle.

9. The stent recovery device according to claim 1, characterized in that: One end of the hook away from the hook handle has a certain bending angle.

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