Esophageal stent protection device
By designing a combination of a hollow plastic hose and a traction core tube, the problem of friction damage between the esophageal stent traction line and the inner wall of the nasal cavity and esophagus is solved, thereby achieving protection for the patient and stable insertion of the traction line, reducing the risk of injury.
Patent Information
- Application Number
- CN202422381921.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-09-29
AI Technical Summary
The esophageal stent traction line rubs against the patient's nasal cavity and esophageal inner wall, causing damage.
An esophageal stent protection device is designed, comprising a hollow plastic hose and a solid traction core tube. The hollow plastic hose is provided with a leakage clearance hole on the outside and a traction core tube on the inside. The traction line is prevented from directly contacting the nasal cavity and esophageal mucosa through the cooperation of the leakage clearance hole and the traction core tube, and the traction line is stabilized by an anti-detachment hook and a winding wire groove.
It effectively protects the patient's nasal and esophageal mucosa and prevents friction damage. It also allows mucus to be discharged through the leakage hole, preventing the traction line from sliding, ensuring that the traction line is passed through smoothly, and reducing the risk of injury during daily activities.
Smart Images
Figure CN223438689U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of esophageal stent protection, in particular to esophageal stent protection device. BACKGROUND
[0002] Esophageal stent implantation is one of the important means for treating esophageal stenosis and obstruction, and ensuring the stable fixation of the stent is crucial for treatment effect and patient recovery. Many esophageal stents have special structures in design, such as barbs, hooks or enlarged end portions. These structures can be embedded in the esophageal wall tissue to provide a certain mechanical resistance and prevent the stent from shifting. The appropriate length of the stent is selected so that its two ends can exceed the lesion site by a certain length, increasing the contact area with the normal esophageal tissue and thus improving the fixation effect. Generally speaking, the two ends of the stent should exceed the lesion by at least 2 cm to ensure good fixation effect. At the same time, with the passage of time, the esophageal tissue will have a certain reaction to the stent, such as inflammation and fibrous tissue proliferation. These tissues will wrap the stent, further enhancing the fixation effect. Special treatment can also be performed on the surface of the stent, such as increasing roughness or coating, to promote cell adhesion and tissue growth, which helps to fix the stent. After the stent is implanted, a balloon can be used to moderately expand the two ends of the stent, making it better fit the esophageal wall and enhancing the fixation effect. In some special cases, such as when there is a significant risk of stent displacement after implantation, the stent can be fixed to the esophageal wall by endoscopic suturing. However, this method is relatively complex and may increase the risk of complications. These methods all rely on the patient's esophagus to fix the stent. When the patient's lesion site is not good, external equipment is needed to pull and fix the esophageal stent. A traction line with good toughness is usually used to fix the esophageal stent, and then the traction line is pulled out through the patient's nasal cavity and hung on the patient's ear. However, in the patient's daily life, the traction line will rub against the patient's nasal cavity and esophageal mucosa with the patient's movement, which can easily cause damage. Therefore, an esophageal stent protection device is proposed. SUMMARY
[0003] The purpose of the utility model is to provide esophageal stent protection device to solve the problem of esophageal stent traction line easy to rub against the patient's nasal cavity and esophageal mucosa leading to damage in the background art.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: esophageal stent protection device, including hollow plastic hose, the side surface of hollow plastic hose is equipped with the liquid leakage let -alone hole, and the inside surface of hollow plastic hose is provided with the traction core pipe, the traction core pipe is solid plastic pole, the liquid leakage let -alone hole evenly distributes in the outside surface of hollow plastic hose, and adjacent liquid leakage let -alone hole is opposite dislocation setting.
[0005] Preferably, the outer diameter of the pulling core pipe is smaller than the inner surface diameter of the hollow plastic hose, the pulling core pipe and the hollow plastic hose are in clearance fit, and the length of the pulling core pipe is greater than the length of the hollow plastic hose.
[0006] The above technical solution enables the pulling core pipe to smoothly drive the pulling line out of the hollow plastic hose.
[0007] Preferably, an outer surface of one end of the pulling core pipe is provided with a threading connection hole, an annular sleeving groove is provided on the outer surface of the one end of the pulling core pipe where the threading connection hole is located, and both ends of the sleeving groove penetrate the inner surface of the threading connection hole.
[0008] The above technical solution enables the pulling core pipe to be stably connected and fixed with the pulling line.
[0009] Preferably, an outer surface of the pulling core pipe is provided with a winding line winding groove, one end of the winding line winding groove penetrates the inner surface of the threading connection hole, and the other end of the winding line winding groove penetrates the end surface of the one end of the pulling core pipe.
[0010] The above technical solution enables the pulling line to pass through the hollow plastic hose in a long length at one time in the form of being wound on the outer surface of the pulling core pipe without continuous pulling.
[0011] Preferably, the outer surface of the one end of the pulling core pipe provided with the threading connection hole is provided with a clearance groove, a pulling plate is fixedly connected to the end of the pulling core pipe on one side of the clearance groove, and the outer diameter of the pulling plate is the same as the outer diameter of the pulling core pipe.
[0012] The above technical solution enables the pulling core pipe to be stably pulled and threaded.
[0013] Preferably, an inner surface of the hollow plastic hose is provided with an anti-skid limiting groove, the anti-skid limiting groove is designed in a U shape, and the anti-skid limiting groove penetrates the inner surface of the liquid leakage clearance hole in a transverse direction.
[0014] The above technical solution enables the anti-skid limiting groove to limit the pulling line and prevent the pulling line from sliding randomly to cause abnormal wear of the hollow plastic hose.
[0015] Preferably, an outer surface of the hollow plastic hose is provided with a functional groove, the functional groove is designed in an arc shape with concave, the functional groove is concentrically arranged with the liquid leakage clearance hole, an anti-falling barb is fixedly arranged on the outer surface of the functional groove, the bending directions of the two adjacent anti-falling barbs are opposite, and the maximum distance between the outer surface of the anti-falling barb and the axis of the hollow plastic hose is smaller than the radius of the outer circle of the hollow plastic hose.
[0016] The above technical solution enables the anti-falling barb to increase the limiting effect of the hollow plastic hose on the pulling line and prevent the pulling line from sliding randomly relative to the hollow plastic hose.
[0017] Compared with the prior art, the esophageal stent protection device has the advantages that:
[0018] 1. The hollow plastic tube can protect the traction line, so that the traction line does not directly contact the nasal cavity and esophageal mucosa of the patient, thereby avoiding damage to the esophageal and nasal cavity mucosa of the patient.
[0019] 2. Further, the hollow plastic tube is provided with a liquid leakage accommodating hole on the outer surface, so that when the hollow plastic tube is located inside the esophagus of the patient, the liquid leakage accommodating hole can ensure that the mucus in the esophagus does not be discharged out of the body due to high pressure in the esophagus.
[0020] Further, the anti-disengagement barb is provided and does not directly contact the nasal cavity and esophageal wall of the patient, and the traction line can be wound on the inner surface of the hollow plastic tube through the hooking of the anti-disengagement barb and the traction line, so that the hollow plastic tube does not slide up and down relative to the traction line during use, and good protection effect of the nasal cavity and esophageal wall of the patient is ensured.
[0021] 3. The traction line is knotted and fixed at one end of the traction core tube, so that the traction core tube can drive the traction line to penetrate through both ends of the hollow plastic tube, achieving the purpose of conveniently penetrating the traction line into the hollow plastic tube.
[0022] Further, the traction line is wound on the outer surface of the traction core tube through the winding of the winding groove, so that the traction core tube can drive the traction line to move after penetrating out of the hollow plastic tube, so that the length of the traction line penetrating out of the hollow plastic tube meets the length requirement of the patient's ear fixation, and damage to the patient caused by continuous traction of the traction line during the threading process is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is a whole three-dimensional structure schematic diagram of the utility model;
[0024] Figure 2 It is a three-dimensional structure schematic diagram of the connection of the traction core tube and the winding groove of the utility model;
[0025] Figure 3 It is a whole working state three-dimensional structure schematic diagram of the utility model;
[0026] Figure 4 It is a three-dimensional structure schematic diagram of the connection of the traction core tube, the threading connecting hole and the sleeving groove of the utility model;
[0027] Figure 5The utility model discloses hollow plastic hose, function groove and prevent the hollow plastic hose, the leakage let -by -hole and the anti -skid limit groove connection section surface three -dimensional structure schematic diagram.
[0028] Figure 6 The utility model discloses hollow plastic hose, leakage let -by -hole and anti -skid limit groove connection section surface three -dimensional structure schematic diagram.
[0029] In the drawing: 1, hollow plastic hose;2, leakage let -by -hole;3, traction core pipe;4, threading connecting hole;5, let -by -slot;6, pull plate;7, sleeve groove;8, winding take -up slot;9, anti -skid limit groove;10, function groove;11, prevent the hollow plastic hose, the leakage let -by -hole and the anti -skid limit groove connection section surface three -dimensional structure schematic diagram. Specific implementation
[0030] The utility model discloses hollow plastic hose, leakage let -by -hole and anti -skid limit groove connection section surface three -dimensional structure schematic diagram.
[0031] Please refer to Figures 1-6 The utility model provides a technical scheme: esophageal stent protection device.
[0032] Embodiment one
[0033] Disclosed in the embodiment: hollow plastic hose 1, the lateral surface of hollow plastic hose 1 is set up with leakage let -by -hole 2, and the inner side surface of hollow plastic hose 1 is provided with traction core pipe 3, and traction core pipe 3 is solid plastic pole, and leakage let -by -hole 2 is evenly distributed on the outer side surface of hollow plastic hose 1, and adjacent leakage let -by -hole 2 is set to be opposite to the dislocation;
[0034] The outer diameter of traction core pipe 3 is less than the diameter of the inner side surface of hollow plastic hose 1, and traction core pipe 3 is gap fit with hollow plastic hose 1, and the length of traction core pipe 3 is greater than the length of hollow plastic hose 1;
[0035] The outer surface of one end of traction core pipe 3 is set up with threading connecting hole 4, and the outer side surface of one end of traction core pipe 3 where threading connecting hole 4 is set up with annular sleeve groove 7, and both ends of sleeve groove 7 all penetrate the inner side surface of threading connecting hole 4;
[0036] In use, first connect one end of the traction line to the esophageal stent, then pass the other end of the traction line out of the patient's esophagus and nasal cavity, at this time pass the end of the traction line out of the threading connection hole 4 and tie a surgical knot, at this time pass the end of the traction core tube 3 connected to the traction line into one end of the hollow plastic tube 1 until the end of the traction core tube 3 passes out of the other end of the hollow plastic tube 1, then pull the traction core tube 3 until the traction core tube 3 is completely pulled out of the hollow plastic tube 1, at this time cut the hollow plastic tube 1 into two parts according to the predetermined length, the end outside the patient's nasal cavity after cutting is arc-shaped and is sleeved on the patient's ear, then cut the connection between the traction line and the traction core tube 3 and knot the end of the hollow plastic tube 1 to form a closed loop, the contact between the hollow plastic tube 1 and the patient's ear ensures that the traction line will not cut the patient's ear, and the liquid leakage accommodation hole 2 on the side surface of the hollow plastic tube 1 inside the patient's body ensures that the mucus in the patient's esophagus will not be discharged out of the body from the upper opening due to high pressure in the esophagus.
[0037] Example two
[0038] This embodiment discloses that the outer surface of the traction core tube 3 is provided with a winding line collecting groove 8, one end of the winding line collecting groove 8 penetrates through the inner side surface of the threading connection hole 4, and the other end of the winding line collecting groove 8 penetrates through the end face of one end of the traction core tube 3.
[0039] The end of the traction core tube 3 provided with the threading connection hole 4 is provided with an accommodation groove 5 on the outer surface, one side of the traction core tube 3 is fixedly connected with a pulling plate 6, and the outer diameter of the pulling plate 6 is the same as the outer diameter of the traction core tube 3.
[0040] When threading is performed using the traction core tube 3, the traction line after being passed into the threading connection hole 4 is tightly knotted after being sleeved on the groove 7, then the traction line is passed through the end of the threading connection hole 4 along the winding line collecting groove 8 and wound on the outer surface of the traction core tube 3, at this time when the traction core tube 3 is pulled for threading, the length of the traction line that needs to be passed out of the hollow plastic tube 1 can be brought out of the other end of the hollow plastic tube 1 at one time, avoiding the need to pull the traction core tube 3 after it is passed out, avoiding the damage to the patient caused by pulling the traction line when the hollow plastic tube 1 is not installed in place, and ensuring stable pulling of the traction core tube 3 by the way of buckling the fingers into the accommodation groove 5 and pulling the pulling plate 6 during the pulling process.
[0041] Example three
[0042] This embodiment discloses that the inner side surface of the hollow plastic tube 1 is provided with an anti-skid limiting groove 9, the anti-skid limiting groove 9 is designed in a U shape, and the anti-skid limiting groove 9 transversely penetrates through the inner side surface of the liquid leakage accommodation hole 2.
[0043] The hollow plastic hose 1 is provided with a functional groove 10 on the outer side surface, the functional groove 10 is designed as an arc shape with concave, the functional groove 10 is concentrically arranged with the liquid leakage accommodation hole 2, the outer surface of the functional groove 10 is fixedly provided with anti-disengagement barbs 11, the bending directions of the adjacent two anti-disengagement barbs 11 are opposite, and the maximum distance between the outer surface of the anti-disengagement barb 11 and the axis of the hollow plastic hose 1 is less than the radius of the outer circle of the hollow plastic hose 1;
[0044] After the threading is completed, the traction line inside the hollow plastic hose 1 is hooked out of the liquid leakage accommodation hole 2 and sleeved on the two opposite anti-disengagement barbs 11 arranged on the side surface of the functional groove 10 by the tweezers, at this time, the traction line is continuously S-shaped in the hollow plastic hose 1 under the action of the anti-disengagement barbs 11 and is limited by the anti-slip limiting groove 9, so that the traction line can be tightly attached to the inner side surface of the hollow plastic hose 1 and stably connected with the hollow plastic hose 1 under the friction and winding effects, without large sliding with the hollow plastic hose 1.
[0045] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. An esophageal stent protection device, comprising a hollow plastic hose (1), wherein a leakage hole (2) is provided on the side surface of the hollow plastic hose (1), and a traction core tube (3) is provided on the inner surface of the hollow plastic hose (1), characterized in that: The pulling core tube (3) is a solid plastic rod, the leakage relief holes (2) are evenly distributed on the outer surface of the hollow plastic hose (1), and adjacent leakage relief holes (2) are arranged in a staggered manner.
2. The esophageal stent protection device according to claim 1, characterized in that: The outer diameter of the pulling core tube (3) is smaller than the inner surface diameter of the hollow plastic hose (1), the pulling core tube (3) and the hollow plastic hose (1) are clearance-fitted, and the length of the pulling core tube (3) is greater than the length of the hollow plastic hose (1).
3. The esophageal stent protection device according to claim 1, characterized in that: A threading connection hole (4) is provided on the outer surface of one end of the pulling core tube (3), and an annular sleeve groove (7) is provided on the outer surface of one end of the pulling core tube (3) where the threading connection hole (4) is located, and both ends of the sleeve groove (7) pass through the inner surface of the threading connection hole (4).
4. The esophageal stent protection device according to claim 1, characterized in that: The outer surface of the pulling core tube (3) is provided with a winding wire groove (8), and one end of the winding wire groove (8) passes through the inner surface of the threading connection hole (4), and the other end of the winding wire groove (8) passes through one end surface of the pulling core tube (3).
5. The esophageal stent protection device according to claim 1, characterized in that: The outer surface of one end of the pulling core tube (3) having the threading connection hole (4) is provided with a clearance groove (5), and the end of the pulling core tube (3) on one side of the clearance groove (5) is fixedly connected with a lifting plate (6), and the outer diameter of the lifting plate (6) is the same as the outer diameter of the pulling core tube (3).
6. The esophageal stent protection device according to claim 1, characterized in that: The inner surface of the hollow plastic hose (1) is provided with an anti-slip limiting groove (9), which is U-shaped and extends transversely through the inner surface of the leakage hole (2).
7. The esophageal stent protection device according to claim 1, characterized in that: The outer surface of the hollow plastic hose (1) is provided with a functional groove (10), and the functional groove (10) is designed to be concave in an arc shape, and the functional groove (10) and the leakage clearance hole (2) are arranged concentrically, and the outer surface of the functional groove (10) is fixedly provided with an anti-slip hook (11), and the bending directions of two adjacent anti-slip hooks (11) are opposite, and the maximum distance between the outer surface of the anti-slip hook (11) and the axis of the hollow plastic hose (1) is less than the radius of the outer circle of the hollow plastic hose (1).