Hook assembly for taking out esophageal stent under endoscope

Abstract

The utility model discloses a hook assembly for taking out an esophageal stent under an endoscope, which relates to the technical field of medical supplies and comprises a base, a taking-out hook, a connecting rod, a connector, a spring and a pull rope, the base is hinged with the end of the taking-out hook, and the taking-out hook is hinged with the connector through the connecting rod; the base is detachably mounted at the front end part of the endoscope; one end of the pull rope penetrates through the base and then is fixedly connected with the connector, the spring wraps the peripheral surface of the pull rope, one end of the spring abuts against the connector, and the other end of the spring abuts against the base; and the other end of the pull rope is fixedly connected with a handle of the endoscope through a pipeline. According to the hook assembly for taking out the esophageal stent under the endoscope, the esophageal stent can be taken out conveniently, operation time is shortened, and discomfort of a patient in the operation and untoward effects after the operation are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical supplies, in particular to an esophageal stent removal hook component under endoscope. Background Art

[0002] Esophageal stents are self-expanding, elastic, soft and highly memory-resistant nickel-titanium alloy products. They are used in esophageal tumors, opening the door to the widespread use of low-pain, low-complication esophageal stents.

[0003] At present, an endoscope and a foreign body forceps are often used to remove an esophageal stent. The foreign body forceps are small in size and can only clamp the edge of the esophageal stent to remove the esophageal stent from the esophagus. The esophageal stent is easily scratched and stuck with the inner wall of the esophagus during the removal process, and has no guiding effect on the esophageal stent, resulting in a long time spent on removing the esophageal stent and easily causing serious consequences such as esophageal tearing or even rupture.

[0004] How to develop an endoscopic esophageal stent removal hook assembly to facilitate the removal of the esophageal stent, shorten the operation time, and reduce the patient's discomfort during the operation and postoperative adverse reactions has become a technical problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0005] The utility model aims to provide an esophageal stent removal hook assembly under endoscope to solve the problems listed in the background technology.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model discloses an esophageal stent removal hook assembly under endoscope, comprising a base, a removal hook, a connecting rod, a connecting head, a spring and a pull rope, wherein the base is hinged to the end of the removal hook, and the removal hook is hinged to the connecting head through the connecting rod; the base is detachably mounted on the front end of the endoscope;

[0008] One end of the pull rope passes through the base and is fixedly connected to the connector, and the other end of the pull rope is fixedly connected to the handle of the endoscope through a pipe. The spring is coated on the outer circumference of the pull rope, and one end of the spring abuts against the connector, and the other end of the spring abuts against the base.

[0009] Preferably, the base comprises two light guide windows, a rope hole, a water bag opening, an objective lens window and a base body, the rope hole is provided at the center of the base body, and the two light guide windows, one water bag opening and one objective lens window are arranged around the rope hole;

[0010] A light source is placed in the light guide window; the pull rope is fixedly connected to the handle through the pull rope hole; an imaging lens is placed in the objective lens window; a water bag is placed in the water bag mouth, and the water bag is connected to a water inlet pipe and a water outlet pipe respectively.

[0011] Preferably, one of the end surfaces of the base body is provided with a step surface.

[0012] Preferably, it also includes a first connecting ear plate and a quick-release joint, and a plurality of groups of the first connecting ear plates are fixedly installed on the step surface of the base body in a circumferentially evenly distributed manner; the quick-release joint is fixedly installed on the other end surface of the base body, and the quick-release joint is sealed and connected to the front end of the endoscope.

[0013] Preferably, a plurality of groups of third connecting ear plates are fixedly installed in a circumferentially uniform manner on the outer peripheral surface of the connecting head.

[0014] Preferably, the non-clamping end of the removal hook is hinged to a group of the first connecting ear plates, and the outer side wall of the clamping end of the removal hook is in an arc shape;

[0015] A group of second connecting ear plates are fixedly installed in the middle of the inner side wall of each of the taking-out hooks, and a group of the second connecting ear plates are hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to a group of the third connecting ear plates.

[0016] Compared with the prior art, the beneficial technical effects of the utility model are:

[0017] 1) The base is detachably mounted on the front end of the endoscope, which facilitates the disassembly and replacement of different functional components to meet clinical needs, further expanding the functions of the endoscope;

[0018] 2) One end of the pull rope passes through the base and is fixedly connected to the connector. The spring is coated on the outer circumferential surface of the pull rope, and one end of the spring abuts against the connector, while the other end of the spring abuts against the base. The other end of the pull rope is fixedly connected to the handle of the endoscope through a pipe. The movement of the pull rope is controlled by the handle, and the pull rope is reset by the elastic force of the spring. When the handle controls the movement of the pull rope, the connector is driven to move synchronously. Further, the connector drives the removal hook to swing outward around the base through a connecting rod to achieve opening. When the handle does not control the pull rope, the spring resets the connector through the elastic force. Further, the connector drives the removal hook to swing inward around the base through a connecting rod to achieve closing. The pull rope is controlled by the handle and the spring to achieve the clamping operation of the esophageal stent.

[0019] 3) The removal hook is large in size and can clamp the edge of the esophageal stent. In the process of removing the esophageal stent, the outer wall of the removal hook contacts the inner wall of the esophagus to play a guiding role, thereby reducing the patient's discomfort.

[0020] The utility model discloses an esophageal stent removal hook component under endoscope, which is convenient for removing the esophageal stent, shortens the operation time, and reduces the patient's discomfort during the operation and adverse reactions after the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the interior of an endoscopic esophageal stent removal hook assembly of the utility model (closed state);

[0023] Figure 2 It is a three-dimensional schematic diagram of the base of the utility model;

[0024] Figure 3 This is a schematic diagram of the main view of the base of the utility model;

[0025] Figure 4 This is a schematic diagram of an endoscopic esophageal stent removal hook assembly of the utility model; (open state)

[0026] Figure 5 This is a working schematic diagram of the water bag of the utility model;

[0027] Figure 6 The utility model is a schematic diagram of an esophageal stent removal hook assembly for clamping an esophageal stent under endoscope.

[0028] Description of reference numerals:

[0029] 1. Base; 101. Light guide window; 102. Pull rope hole; 103. Water bladder mouth; 104. Objective lens window; 105. First connecting ear plate; 106. Base body; 107. Quick release connector; 2. Removal hook; 3. Second connecting ear plate; 4. Connecting rod; 5. Connector; 6. Spring; 7. Pull rope; 8. Third connecting ear plate; 9. Esophageal stent; 10. Water bladder; 11. Water inlet pipe; 12. Water outlet pipe. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] like Figure 1-6As shown, an endoscopic esophageal stent removal hook assembly comprises a base 1, a removal hook 2, a connecting rod 4, a connecting head 5, a spring 6 and a pull rope 7, wherein the base 1 is hinged to the end of the removal hook 2, and the removal hook 2 is hinged to the connecting head 5 through the connecting rod 4; the base 1 is detachably mounted on the front end of the endoscope, so that different functional components can be easily disassembled and replaced to meet clinical needs, and further, the functions of the endoscope are expanded;

[0032] One end of the pull rope 7 passes through the base 1 and is fixedly connected to the connecting head 5, and the spring 6 is covered on the outer peripheral surface of the pull rope 7, and one end of the spring 6 abuts against the connecting head 5, and the other end of the spring 6 abuts against the base 1; the other end of the pull rope 7 is fixedly connected to the handle of the endoscope through a pipeline, and the movement of the pull rope is controlled by the handle, and the pull rope is reset by the elastic force of the spring. When the handle controls the movement of the pull rope, the connecting head is driven to move synchronously. Further, the connecting head drives the removal hook to swing outward around the base to achieve opening through the connecting rod. When the handle does not control the pull rope, the spring resets the connecting head through the elastic force. Further, the connecting head drives the removal hook to swing inward around the base to achieve closing through the connecting rod. The pull rope is controlled by the handle and the spring to achieve the clamping operation of the esophageal stent 9.

[0033] The removal hook is relatively large in size and can clamp the edge of the esophageal stent 9. In the process of removing the esophageal stent 9, the outer wall of the removal hook contacts the inner wall of the esophagus to play a guiding role, thereby reducing the patient's discomfort.

[0034] like Figure 2-3 As shown, the base 1 includes two light guide windows 101, a drawstring hole 102, a water bag mouth 103, an objective lens window 104 and a base body 106. The drawstring hole 102 is opened at the center of the base body 106, and the two light guide windows 101, the water bag mouth 103 and the objective lens window 104 are arranged around the drawstring hole 102; a water bag 10 is placed in the water bag mouth 103, and the water bag 10 is connected with a water inlet pipe 11 and a water outlet pipe 12 respectively. The setting of the water bag mouth is convenient for medical staff to place a water bag in the patient's esophageal stent 9, and by circulating water into the water bag, the esophageal stent 9 is contracted and separated from the inner wall of the patient's esophagus. Furthermore, the circulating water injection method can appropriately increase the temperature of the injected water to avoid irritation of the patient's esophagus by excessively cold water.

[0035] A light source is placed in the light guide window 101, and the light source mainly adopts an LED lamp, which can provide lighting for medical staff inside the esophagus, so that the medical staff can obtain an inclined field of view, and the LED light source will not cause burns to the esophagus; the pull rope 7 is fixedly connected to the handle through the pull rope hole 102, and the medical staff can pull the pull rope through the handle to move the pull rope; an imaging lens is placed in the objective lens window 104, so that the medical staff can clearly explore the situation inside the patient's esophagus, which is convenient for timely human intervention and treatment according to the situation inside the patient's esophagus.

[0036] Specifically, one of the end faces of the base body 106 is arranged as a step surface, so as to facilitate hinged connection of the removal hook on the outer peripheral surface of the step surface. After the removal hook is installed, the outer side surface of the non-clamping end of the removal hook is lower than the outer peripheral surface of the front end of the endoscope. The front end of the endoscope can easily drive the removal hook assembly to move in the esophagus, and has little impact on the inner wall of the patient's esophagus when moving in the esophagus, which can effectively reduce the patient's discomfort.

[0037] Specifically, it also includes a first connecting ear plate 105 and a quick-release connector 107. A plurality of groups of the first connecting ear plates 105 are fixedly installed in a circumferentially evenly distributed manner on the step surface of the base body 106; the quick-release connector 107 is fixedly installed on the other end surface of the base body 106, and the quick-release connector 107 is sealed and connected to the front end of the endoscope. The quick-release connector can be quickly disassembled and assembled with the front end of the endoscope, thereby shortening the preparation time for surgery of medical staff and improving work efficiency; further, the sealed connection method can prevent body fluids inside the patient's esophagus from entering the light guide window and the objective window, and affecting the electronic components inside.

[0038] Specifically, a plurality of groups of third connecting ear plates 8 are evenly and fixedly installed on the outer peripheral surface of the connecting head 5 in a circumferentially distributed manner.

[0039] Specifically, the non-gripping end of the removal hook 2 is hinged to a set of the first connecting ear plates 105;

[0040] A set of second connecting ear plates 3 is fixedly mounted on the middle part of the inner side wall of each of the removal hooks 2;

[0041] The outer wall of the clamping end of the removal hook 2 is arc-shaped, a group of the second connecting ear plates 3 are hinged to one end of the connecting rod 4, and the other end of the connecting rod 4 is hinged to a group of the third connecting ear plates 8. The outer wall of the clamping end of the removal hook is arc-shaped, which can reduce the impact of the removal hook on the inner wall of the patient's esophagus when moving, opening or closing in the esophagus, avoid damage to the inner wall of the patient's esophagus, and further reduce the patient's discomfort.

[0042] Specifically, the first connecting ear plates 105, the second connecting ear plates 3 and the third connecting ear plates 8 are grouped in pairs.

[0043] like Figure 4-6 As shown, the use process of the utility model is as follows:

[0044] Step 1: Preparation: Pass one end of the pull rope through the pipe of the endoscope and connect it to the handle of the endoscope, and place the light source and the objective lens in the catheter window and the objective lens window respectively. After adjusting the positions of the light source and the objective lens, seal and connect them to the front end of the endoscope through the quick-release connector;

[0045] Step 2: insert the endoscope. The medical staff slowly lowers the front end of the endoscope with the removal hook assembly into the patient's esophagus, and obtains a clear field of view in the patient's esophagus through the light guide window and the objective lens window to inspect and evaluate the inner wall of the patient's esophagus, while preventing the endoscope from causing damage to the inside of the esophagus during its movement inside the esophagus.

[0046] Step 3: Contract the esophageal stent. The medical staff places a water bag 10 into the esophageal stent 9 through the pipe and the water bag port of the endoscope, and supplies water into the water bag through the water inlet pipe 11 to expand the water bag 10 until the outer wall of the water bag 10 contacts the inner wall of the esophageal stent 9 for a period of time, and discharges the water bag 10 through the water outlet pipe 12. The water inlet pipe 11 and the drain pipe 11 are used to realize water circulation inside the water bag, so that the esophageal stent 9 can contract when cold until the outer wall of the esophageal stent 9 is separated from the inner wall of the esophagus.

[0047] Step 4: Clamp the esophageal stent. The medical staff controls the handle to open the removal hook. When the removal hook contacts the outer wall of the esophageal stent 9, the medical staff stops using the handle to control the removal hook. Under the action of the spring force, the clamping end of the removal hook contacts and squeezes the outer wall of the esophageal stent 9 to achieve the clamping operation of the esophageal stent 9. The spring force can further reduce the diameter of the esophageal stent 9, making it easier to remove the esophageal stent 9.

[0048] Step 5, esophageal stent removal. The medical staff removes the esophageal stent 9 by retracting the endoscope outward. Since the removal hook can clamp the edge of the esophageal stent 9, it can further guide the esophageal stent 9. The smooth arc-shaped outer wall of the removal hook contacts the inner wall of the patient's esophagus, preventing the edge of the esophageal stent 9 from causing damage to the inner wall of the patient's esophagus during the removal process.

[0049] 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.

[0050] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. An endoscopic esophageal stent removal hook assembly, characterized in that: The endoscope comprises a base (1), a removal hook (2), a connecting rod (4), a connecting head (5), a spring (6) and a pull rope (7); the base (1) is hinged to the end of the removal hook (2); the removal hook (2) is hinged to the connecting head (5) via the connecting rod (4); the base (1) is detachably mounted on the front end of the endoscope; One end of the pull rope (7) passes through the base (1) and is fixedly connected to the connector (5), and the other end of the pull rope (7) is fixedly connected to the handle of the endoscope through a pipe. The spring (6) is wrapped around the outer peripheral surface of the pull rope (7), and one end of the spring (6) is in contact with the connector (5), and the other end of the spring (6) is in contact with the base (1).

2. The endoscopic esophageal stent removal hook assembly according to claim 1, characterized in that: The base (1) comprises two light guide windows (101), a rope pulling hole (102), a water bag opening (103), an objective lens window (104) and a base body (106); the rope pulling hole (102) is provided at the center of the base body (106); the two light guide windows (101), one water bag opening (103) and one objective lens window (104) are arranged around the rope pulling hole (102); A light source is placed in the light guide window (101); the pull rope (7) is fixedly connected to the handle through the pull rope hole (102); an imaging lens is placed in the objective lens window (104); a water bag (9) is placed in the water bag opening (103), and the water bag (9) is respectively connected to a water inlet pipe (10) and a water outlet pipe (11).

3. The endoscopic esophageal stent removal hook assembly according to claim 2, characterized in that: One of the end surfaces of the base body (106) is arranged as a step surface.

4. The endoscopic esophageal stent removal hook assembly according to claim 2, characterized in that: It also includes a first connecting ear plate (105) and a quick-release joint (107), wherein a plurality of groups of the first connecting ear plates (105) are fixedly installed in a circumferentially evenly distributed manner on the step surface of the base body (106); the quick-release joint (107) is fixedly installed on the other end surface of the base body (106), and the quick-release joint (107) is sealed and connected to the front end portion of the endoscope.

5. The endoscopic esophageal stent removal hook assembly according to claim 4, characterized in that: A plurality of groups of third connecting ear plates (8) are fixedly mounted in a circumferentially evenly distributed manner on the outer peripheral surface of the connecting head (5).

6. The endoscopic esophageal stent removal hook assembly according to claim 5, characterized in that: The non-clamping end of the removal hook (2) is hinged to a group of the first connecting ear plates (105), and the outer side wall of the clamping end of the removal hook (2) is arc-shaped; a group of second connecting ear plates (3) are fixedly installed in the middle of the inner side wall of each of the removal hooks (2), a group of the second connecting ear plates (3) are hinged to one end of the connecting rod (4), and the other end of the connecting rod (4) is hinged to a group of the third connecting ear plates (8).

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