Mouthpiece device for esophageal stent implantation

Abstract

The invention discloses a mouthpiece device for esophageal stent implantation. An upper tooth socket and a lower tooth socket are arranged to cover upper teeth and lower teeth of an oral cavity in an attached mode, the device is provided with an expansion mechanism, the expansion mechanism is composed of a first hinge seat, a second hinge seat, an adjusting screw rod, a first rotating rod and a second rotating rod, and the first rotating rod and the second rotating rod are connected into a rhombus quadrangle through a cylinder and the like. The shape of the rhombus and the quadrangle can be changed by rotating the adjusting screw rod, so that the distance between the upper tooth socket and the lower tooth socket is adjusted, namely the opening degree of the oral cavity of a patient can be freely adjusted according to the operation requirements and the conditions of the patient, the situation that teeth bite the supporting tube and cause displacement or deformation of the supporting tube to press a catheter is avoided, and meanwhile the oral cavity space is exposed; the operation such as catheter insertion by medical staff is facilitated; the supporting tube made of the hollow hard transparent plastic is not prone to deformation, the problem that the catheter is extruded due to deformation of the mouthpiece, and consequently the operation process is affected is solved, and meanwhile the risks of damage to surgical instruments, bucking of a patient and the like are reduced.

Description

Technical Field

[0001] The present invention belongs to the field of clinical medical devices, and in particular relates to a mouthpiece device for esophageal stent implantation. Background Art

[0002] Esophageal stent implantation, a widely used minimally invasive procedure, effectively reconstructs the esophageal lumen through balloon catheter dilation and metal stent implantation, providing an important treatment option for patients with conditions such as esophageal stenosis and obstruction. During this procedure, maintaining an open mouth is crucial to ensure smooth catheter entry into the esophagus, making the use of a mouthpiece essential.

[0003] At present, it is common in clinical practice to cut a transparent catheter or a syringe into a circular structure as a temporary mouthpiece to pass the catheter through. However, this simple mouthpiece has many defects. On the one hand, the circular structure of the simple mouthpiece is difficult to fit tightly into the patient's mouth, and it is very easy to slip during a long operation, resulting in interruption of the surgical operation or increased difficulty of the operation; on the other hand, the material of the simple mouthpiece is relatively soft and cannot withstand the pressure generated by the patient's bite. It is easy to be bitten and deformed, and then squeeze the catheter, which not only affects the progress of the operation, but also may cause damage to the surgical instruments or cause the patient to choke and cough, etc., seriously reducing the patient's comfort and surgical safety. Based on the shortcomings of the existing technology, it is urgent to develop a safe, reliable and stable mouthpiece device for esophageal stent implantation to meet the actual needs of clinical surgery. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention designs a mouthpiece device for esophageal stent implantation:

[0005] The mouthpiece device for esophageal stent implantation includes: a dental brace, an expansion mechanism, and a support tube;

[0006] The braces are divided into upper braces and lower braces; the rear end of the lower braces is hinged to the rear end of the upper braces;

[0007] The front end of the lower brace is provided with a square groove for mounting a support tube; the upper end of the lower brace is provided with a mirror-image mounting groove 1; a cylinder is integrally provided in the mounting groove;

[0008] A hinge groove is symmetrically provided at the lower end of the upper brace; a cross bar is provided in the middle of the hinge groove;

[0009] The expansion mechanism includes a hinge seat 1, a hinge seat 2, an adjusting screw, a rotating rod 1, and a rotating rod 2; the rotating rod 1 is mirror-imaged at the upper and lower ends of the hinge seat 1; a screw hole is provided in the middle of the hinge seat 1 to install the adjusting screw;

[0010] The upper and lower ends of the second hinge seat are mirror-imaged with a second rotating rod, and the front end of the second hinge seat is provided with a limiting hole for rotatably connecting to the rear end of the adjusting screw;

[0011] Preferably, the lower end of the lower dental brace is provided with an annular dental groove, and the rear end of the lower dental brace is provided with a square slot for rotationally connecting the upper dental brace;

[0012] Preferably, the upper end of the upper dental brace is provided with an annular dental groove one, and the rear end of the upper dental brace is provided with a hinged seat for hingedly connecting the lower dental brace;

[0013] Preferably, the annular dental groove is attached with a flexible medical silica gel layer on the inner wall of the annular dental groove one;

[0014] Preferably, one end of the upper rotating rod one is hingedly connected to the upper end of the hinged seat one, and the other end is rotationally connected to the horizontal rod;

[0015] One end of the lower rotating rod one is hingedly connected to the lower end of the hinged seat one, and the other end is rotationally connected to the cylinder;

[0016] Preferably, one end of the upper rotating rod two is hingedly connected to the upper end of the hinged seat two, and the other end is rotationally connected to the horizontal rod;

[0017] One end of the lower rotating rod two is hingedly connected to the lower end of the hinged seat two, and the other end is rotationally connected to the cylinder;

[0018] Preferably, the rotating rod one and the rotating rod two are of the same length, and the two groups of rotating rod one and rotating rod two are connected into a rhombic quadrilateral through the cylinder, the rotating rod, the hinged seat one and the hinged seat two;

[0019] Preferably, the square slot is rotationally connected with a support tube inside; and the bottom wall of the square slot is provided with a strong magnet;

[0020] Preferably, the support tube is a hollow hard transparent plastic tube; and the lower end of the support tube is integrally provided with a hard mounting rod;

[0021] The front end of the mounting rod is rotationally mounted in the square slot; and a permanent magnet is embedded inside the mounting rod to magnetically connect the strong magnet.

[0022] The beneficial effects of the present application are:

[0023] The present application discloses a mouthpiece device for esophageal stent implantation; the upper dental brace and the lower dental brace are attached to cover the upper and lower teeth of the oral cavity, and the device is provided with an expansion mechanism composed of a hinged seat one, a hinged seat two, an adjusting screw, a rotating rod one and a rotating rod two, and the rotating rod one and the rotating rod two are connected into a rhombic quadrilateral through a cylinder. By rotating the adjusting screw, the shape of the rhombic quadrilateral can be changed, and the distance between the upper dental brace and the lower dental brace can be adjusted, that is, the opening degree of the oral cavity of the patient can be freely adjusted according to the operation requirements and the patient's condition, so as to avoid the teeth from biting the support tube and causing displacement or deformation of the support tube to compress the catheter, and at the same time, the oral cavity space is exposed, which is convenient for medical staff to perform catheter insertion and other operations;

[0024] The support pipe made of hollow hard transparent plastic is not easily deformed, avoids the problem that the deformation of the mouthpiece extrudes the catheter and affects the operation process, and reduces the risk of damage of surgical instruments and patient coughing. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the embodiment description will be briefly introduced as follows.

[0026] Figure 1 It is a whole structure schematic diagram of a mouthpiece device for esophageal stent implantation.

[0027] Figure 2 It is a structure schematic diagram of an expansion mechanism of a mouthpiece device for esophageal stent implantation.

[0028] Figure 3 It is a cross-sectional structure schematic diagram of an upper dental brace of a mouthpiece device for esophageal stent implantation.

[0029] Figure 4 It is a cross-sectional structure schematic diagram of a lower dental brace.

[0030] In the drawings, the component list represented by each sign is as follows:

[0031] 1-lower dental brace, 101-through slot, 101-annular dental groove, 103-mounting slot, 104-square slot, 1041-strong magnet, 2-upper dental brace, 201-hinge seat, 202-annular dental groove, 203-mounting slot, 3-support pipe, 301-mounting rod, 4-expansion mechanism, 401-hinge seat, 402-hinge seat, 403-rotating rod, 404-rotating rod, 405-adjusting screw rod. DETAILED DESCRIPTION

[0032] The application discloses a mouthpiece device for esophageal stent implantation, which comprises a dental brace, an expansion mechanism 4 and a support pipe 3.

[0033] The dental brace is divided into an upper dental brace 2 and a lower dental brace 1; the rear end of the lower dental brace 1 is hingedly connected to the rear end of the upper dental brace 2.

[0034] A square slot 104 is formed in the front end of the lower dental brace 1 to mount the support pipe 3; a mounting slot 203 is symmetrically arranged on the upper end of the lower dental brace 1; a cylinder is integrally arranged in the mounting slot 103.

[0035] A hinge slot is symmetrically arranged on the lower end of the upper dental brace 2; a horizontal rod is arranged in the middle of the hinge slot.

[0036] The expansion mechanism 4 includes a hinge seat 1 402, a hinge seat 2 401, an adjusting screw 405, a rotating rod 1 404, and a rotating rod 2 403; the rotating rod 1 404 is mirror-imaged at the upper and lower ends of the hinge seat 1 402; a screw hole is provided in the middle of the hinge seat 1 402 to install the adjusting screw 405;

[0037] The second hinged seat 401 is mirror-imaged with a second rotating rod 403 at the upper and lower ends thereof. A limiting hole is provided at the front end of the second hinged seat 401 to rotatably connect to the rear end of the adjusting screw 405 .

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] Example 1

[0040] like Figure 1-4 It is a schematic diagram of the structure of the present invention, in which a dental brace, an expansion mechanism 4 and a support tube 3 are provided;

[0041] The braces are divided into an upper brace 2 and a lower brace 1; the rear end of the lower brace 1 is hinged to the rear end of the upper brace 2; this hinged design ensures that the upper and lower braces 1 can be opened and closed flexibly, and can limit their excessive rotation to a certain extent, ensuring stability during use.

[0042] The front end of the lower brace 1 is provided with a square groove 104 for mounting the support tube 3; the upper end of the lower brace 1 is provided with a mirror-image mounting groove 203; a cylinder is integrally provided in the mounting groove 103;

[0043] A hinge groove is symmetrically provided at the lower end of the upper brace 2; a cross bar is provided in the middle of the hinge groove;

[0044] The expansion mechanism 4 includes a hinge seat 1 402, a hinge seat 2 401, an adjusting screw 405, a rotating rod 1 404, and a rotating rod 2 403; the rotating rod 1 404 is mirror-imaged at the upper and lower ends of the hinge seat 1 402; a screw hole is provided in the middle of the hinge seat 1 402 to install the adjusting screw 405;

[0045] The second hinge seat 401 is mirror-imaged with a second rotating rod 403 at the upper and lower ends. The front end of the second hinge seat 401 is provided with a limiting hole for rotatably connecting to the rear end of the adjusting screw 405.

[0046] In this embodiment, an annular tooth groove 101 is provided at the lower end of the lower brace 1, and a square groove 101 is provided at the rear end of the lower brace 1 to be rotatably connected to the upper brace 2;

[0047] In this embodiment, an annular tooth groove 202 is provided at the upper end of the upper brace 2, and a hinge seat 201 is provided at the lower rear end of the upper brace 2 to hinge the lower brace 1;

[0048] In this embodiment, the inner walls of the annular sockets 101 and 202 are coated with a flexible medical silicone layer. The annular socket 101 is provided at the lower end of the lower brace 1, while the annular socket 202 is provided at the upper end of the upper brace 2. The shapes of the annular sockets 101 and 202 match the contours of the upper and lower dentitions in the human mouth, ensuring a better fit and providing stable support. Furthermore, the inner walls of the annular sockets 101 and 202 are coated with a flexible medical silicone layer. This layer exhibits excellent elasticity and comfort, increasing friction with the teeth to prevent the mouthpiece from slipping in the mouth, while also alleviating discomfort during biting and preventing damage to the teeth and gums.

[0049] In this embodiment, one end of the rotating rod 404 located at the upper portion is hinged to the upper end of the hinge seat 402, and the other end is rotatably connected to the crossbar;

[0050] One end of the rotating rod 404 located at the bottom is hinged to the lower end of the hinge seat 402, and the other end is rotatably connected to the cylinder;

[0051] In this embodiment, one end of the second rotating rod 403 located at the upper portion is hinged to the upper end of the second hinge seat 401, and the other end is rotatably connected to the crossbar;

[0052] One end of the second rotating rod 403 located at the bottom is hinged to the lower end of the second hinge seat 401, and the other end is rotatably connected to the cylinder;

[0053] In this embodiment, the first rotating rod 404 and the second rotating rod 403 are of the same length. The two sets of rotating rods 1 404 and 2 403 are connected to form a rhombus-shaped quadrilateral via a cylinder, a rotating rod, a first hinge seat 402, and a second hinge seat 401. Rotation of the adjustment screw 405 drives relative movement between the first hinge seat 402 and the second hinge seat 401, thereby changing the angle and position of the first rotating rod 404 and the second rotating rod 403. Furthermore, the rhombus-shaped quadrilateral structure has excellent mechanical properties. When the adjustment screw 405 rotates, the shape of the rhombus-shaped quadrilateral changes, thereby adjusting the distance between the upper and lower braces 2 and 1, allowing the degree of oral opening to be freely adjusted according to surgical requirements and patient conditions.

[0054] In this embodiment, the square groove 104 is rotatably connected to the support tube 3; a strong magnet 1041 is provided on the bottom wall of the square groove 104;

[0055] In this embodiment, the support tube 3 is a hollow, hard, transparent plastic tube; a hard mounting rod 301 is integrally provided at the lower end of the support tube 3; the front end of the mounting rod 301 is rotatably mounted in the square groove 104; and a permanent magnet is embedded in the mounting rod 301 to magnetically connect to the strong magnet 1041;

[0056] The support tube 3 is a hollow, rigid, transparent plastic tube. Its use of rigid plastic ensures it won't deform easily under the pressure of the patient's bite, preventing the mouthpiece from deforming and squeezing the catheter, potentially impacting the surgical process. The transparent design allows medical staff to observe the insertion of the catheter and the condition inside the patient's mouth during surgery. A rigid mounting rod 301 is integrated into the lower end of the support tube 3. The shape of the mounting rod 301 matches the square slot 104, ensuring smooth and stable installation within the slot 104. The front end of the mounting rod 301 is rotatably mounted within the slot 104. A permanent magnet is embedded within the mounting rod 301, and a strong magnet 1041 is positioned on the bottom wall of the slot 104. The permanent magnet and strong magnet 1041 are magnetically connected. This magnetic connection not only allows for quick installation and removal of the support tube 3 within the slot 104, facilitating preoperative preparation and postoperative cleaning and disinfection, but also provides a certain degree of fixing force during surgery, preventing the support tube 3 from shifting.

[0057] Specific practical methods

[0058] Place the adjusted mouthpiece device into the patient's mouth, so that the annular groove 101 of the lower brace 1 fits the patient's lower dentition, and the annular groove 202 of the upper brace 2 fits the patient's upper dentition. The patient bites on the flexible medical silicone layer, which not only ensures the stability of the mouthpiece device but also improves comfort. Then, open the upper brace 2 and the lower brace 1 to the appropriate initial angle through the hinge structure. Then, insert the mounting rod 301 of the support tube 3 into the square groove 104 at the front end of the lower brace 1, and use the magnetic attraction between the permanent magnet in the mounting rod 301 and the strong magnet 1041 on the bottom wall of the square groove 104 to fix the support tube 3 in the square groove 104. Then, turn the adjustment screw 405 according to the expected degree of oral opening required for the operation. When the adjusting screw 405 rotates, it drives the hinge seat 1 402 and the hinge seat 2 401 to move relative to each other. Since the rotating rod 1 404 and the rotating rod 2 403 form a rhombus-shaped quadrilateral structure, as the hinge seat 1 402 and the hinge seat 2 401 move, the shape of the rhombus-shaped quadrilateral changes, thereby adjusting the distance between the upper braces 2 and the lower braces 1, and adjusting the mouthpiece device to a suitable opening and closing state. Finally, the surgical catheter is smoothly inserted into the esophagus through the hollow channel of the support tube 3. Since the support tube 3 is a hard transparent plastic tube, it will not be deformed or squeezed by the patient's bite, and the medical staff can clearly observe the insertion of the catheter through the support tube 3. During the operation, if it is necessary to adjust the opening and closing degree of the oral cavity according to the actual situation, the medical staff can turn the adjusting screw 405 again to fine-tune the opening and closing degree of the mouthpiece device to meet the needs of different stages of the operation.

[0059] To sum up, the application discloses a mouthpiece device for esophageal stent implantation, which is characterized in that the upper and lower teeth are covered by the upper and lower tooth sets 2 and 1, and the device is provided with an expansion mechanism 4, which is composed of a hinge seat one 402, a hinge seat two 401, an adjusting screw 405, a rotating rod one 404 and a rotating rod two 403, and the rotating rod one 404 and the rotating rod two 403 are connected into a rhombic quadrilateral through a cylinder. By rotating the adjusting screw 405, the shape of the rhombic quadrilateral can be changed, and the distance between the upper and lower tooth sets 2 and 1 can be adjusted, that is, the opening degree of the patient's mouth can be freely adjusted according to the operation requirements and the patient's condition, so as to avoid the teeth from biting the support pipe 3 and causing the displacement or deformation of the support pipe 3 to compress the catheter, and the oral cavity space is exposed, which is convenient for medical staff to perform catheter insertion and other operations.

[0060] The support pipe 3 made of hollow hard transparent plastic is not easy to deform, which avoids the problem that the operation process is affected due to the deformation and extrusion of the mouthpiece on the catheter, and reduces the risk of damage of surgical instruments and coughing of the patient.

[0061] The preferred embodiments of the application disclosed above are only used to help explain the application, and the preferred embodiments do not describe all the details and limit the application to the specific embodiments described.

Claims

1. A mouthpiece device for esophageal stent implantation, characterized in that: include: Braces, expansion mechanisms, support tubes; The braces are divided into upper braces and lower braces; the rear end of the lower braces is hinged to the rear end of the upper braces; The front end of the lower brace is provided with a square groove for mounting a support tube; the upper end of the lower brace is provided with a mirror-image mounting groove 1; a cylinder is integrally provided in the mounting groove; A hinge groove is symmetrically provided at the lower end of the upper brace; a cross bar is provided in the middle of the hinge groove; The expansion mechanism includes a hinge seat 1, a hinge seat 2, an adjusting screw, a rotating rod 1, and a rotating rod 2; the rotating rod 1 is mirror-imaged at the upper and lower ends of the hinge seat 1; a screw hole is provided in the middle of the hinge seat 1 to install the adjusting screw; The upper and lower ends of the second hinge seat are mirror-imaged with a second rotating rod, and the front end of the second hinge seat is provided with a limiting hole for rotationally connecting the rear end of the adjusting screw.

2. The mouthpiece device for esophageal stent implantation according to claim 1, characterized in that: The lower end of the lower brace is provided with an annular tooth groove, and the rear end of the lower brace is provided with a square groove for rotationally connecting with the upper brace.

3. The mouthpiece device for esophageal stent implantation according to claim 1, characterized in that: An annular tooth groove is provided at the upper end of the upper brace, and a hinge seat is provided at the lower part of the rear end of the upper brace to hinge the lower brace.

4. The mouthpiece device for esophageal stent implantation according to claim 1, characterized in that: The annular alveolar groove and an inner wall of the annular alveolar groove are covered with a flexible medical silicone layer.

5. The mouthpiece device for esophageal stent implantation according to claim 1, characterized in that: The rotating rod located at the upper part has one end hinged to the upper end of the hinge seat, and the other end is rotatably connected to the cross rod; One end of the rotating rod located at the lower part is hinged to the lower end of the hinge seat, and the other end is rotatably connected to the cylinder.

6. The mouthpiece device for esophageal stent implantation according to claim 1, characterized in that: One end of the second rotating rod located at the upper part is hinged to the upper end of the second hinge seat, and the other end is rotatably connected to the first crossbar; One end of the rotating rod 2 located at the lower part is hinged to the lower end of the hinge seat 2, and the other end is rotatably connected to the cylinder.

7. The mouthpiece device for esophageal stent implantation according to claim 1, characterized in that: The rotating rod 1 and the rotating rod 2 have the same length, and the two sets of rotating rods 1 and 2 are connected to form a rhombus quadrilateral through the cylinder, the rotating rod, the hinge seat 1 and the hinge seat 2.

8. The mouthpiece device for esophageal stent implantation according to claim 1, characterized in that: The interior of the square groove is rotatably connected to a support tube; and a strong magnet is provided on the bottom wall of the square groove.

9. The mouthpiece device for esophageal stent implantation according to claim 1, characterized in that: The support tube is a hollow, hard, transparent plastic tube; a hard mounting rod is integrally provided at the lower end of the support tube; The front end of the mounting rod is rotatably mounted in the square groove; and a permanent magnet is embedded inside the mounting rod to magnetically connect with a strong magnet.

Images