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CN-121987393-A - Parotid duct bracket

CN121987393ACN 121987393 ACN121987393 ACN 121987393ACN-121987393-A

Abstract

The patent relates to the technical field of medical devices, in particular to a parotid duct bracket for treating parotid gland blockage. The parotid duct support comprises a support body and a connecting part, wherein the connecting part is arranged at the proximal end of the support body and comprises a first fixing frame and a connecting strip rope, the first fixing frame is connected to the support body through the connecting strip rope, and the connecting part is used for being connected with an oral cavity inner wall suture line of a patient. According to the parotid duct bracket, through the structured suture connection points, the convenience and connection reliability of suture operation are obviously improved, the risk of falling off of the bracket is reduced, the treatment process of a patient is optimized, and the problems of difficult suture and unstable fixation caused by unreasonable fixed structure in the prior art are effectively solved.

Inventors

  • Yu chuangqi
  • SHI HUAN
  • CHEN MINJIE
  • ZHENG LINGYAN
  • XIE LISONG

Assignees

  • 上海交通大学医学院附属第九人民医院

Dates

Publication Date
20260508
Application Date
20260325

Claims (11)

  1. 1. A parotid duct stent comprising: a bracket body; a connection member disposed at a proximal end of the stent body, comprising: The connecting component is used for being connected with the suture line of the inner wall of the oral cavity of the patient.
  2. 2. A parotid duct stent according to claim 1 wherein the first fixation frame has a shape to fit into folds of the oral mucosa.
  3. 3. A parotid duct support according to claim 2 wherein the first fixing frame is formed by bending a wire.
  4. 4. The parotid duct stent according to claim 2, wherein the first fixing frame is 3D printed based on patient intraoral scan data so as to match the shape of the oral mucosa fold surface; the first fixing frame is also provided with a micropore structure, and the shape of the micropore structure is matched with the shape of the local bulge on the oral mucosa fold so as to enhance the fitting degree of the mucosa tissue during embedding.
  5. 5. A parotid duct stent according to claim 1 further comprising: The second fixed frame, one side of the second fixed frame is connected with the first fixed frame through the connecting strip rope, and the other side of the second fixed frame is connected with the bracket body.
  6. 6. A parotid duct stent according to claim 1 wherein the connecting strips are distributed in spokes between the first fixing frame and the stent body.
  7. 7. A parotid duct stent according to claim 1 wherein the connecting strips are arranged in a cross-grid between the first fixing frame and the stent body, and the intersections of the connecting strips are at least partially connected to each other, the crossing angle between the connecting strips being between 30 ° and 60 °.
  8. 8. A parotid duct stent according to any one of claims 1 to 7 wherein the outer surface of the stent body is provided with graduation marks for intraoperative cutting.
  9. 9. A parotid duct stent according to any one of claims 1 to 7 wherein the connecting cord and/or the first fixation frame are made of a degradable material and the connecting cord and/or the first fixation frame are configured to have a degradation time in the range 1-3 months.
  10. 10. A parotid duct stent according to any one of claims 1 to 7 wherein the stent body has a pre-bend which matches the physiological bend of the parotid duct, the pre-bend having a bend angle of 70 ° -125 °.
  11. 11. A parotid duct stent according to claim 1 wherein the end of the stent body adjacent to the connecting member is further provided with a one-way valve for unidirectional outflow of saliva.

Description

Parotid duct bracket Technical Field The patent relates to the technical field of medical equipment, in particular to a catheter stent for treating parotid gland blockage. Background In medical practice, the conventional treatment of parotid gland blockage is to mechanically impact by repeatedly flushing normal saline into the parotid gland cavity to unblock the blockage site. The method usually needs to be carried out for 6-8 weeks, and the treatment is carried out at least once a week, but the clinical effective rate is only 70% -80%, and the recurrence rate is as high as 30% -50%. Patients often experience obvious feeling of soreness and persistent pain during treatment, which seriously affects quality of life. Although some parotid duct stents exist today, these parotid duct stents still have a number of clinical drawbacks. For example, the existing parotid duct stents are extremely easy to fall off in the middle of chewing the mouth due to strong compression force on the parotid duct when the face performs expression action or chewing action of the mouth, which greatly limits the clinical application of the parotid duct stents. Disclosure of Invention To solve or at least partially solve the above technical problem, the present invention provides a parotid duct stent comprising: a bracket body; a connection member disposed at a proximal end of the stent body, comprising: The connecting component is used for being connected with the suture line of the inner wall of the oral cavity of the patient. Optionally, the first fixing frame has a shape that fits the folds of the oral mucosa. The scheme further improves the fitting degree with the folds of the oral mucosa, reduces the risk of unstable fixation, and enhances the stability of the bracket in a dynamic oral environment. Optionally, the first fixing frame is formed by bending a metal wire. Optionally, the first fixing frame is manufactured based on 3D printing of scanning data in a patient's mouth so as to be matched with the surface shape of the folds of the oral mucosa, the first fixing frame is also provided with a micropore structure, and the micropore structure is matched with the shape of the local protrusions on the folds of the oral mucosa so as to enhance the fitting degree of the mucosal tissue during embedding. Optionally, the parotid duct stent further comprises: The second fixed frame, one side of the second fixed frame is connected with the first fixed frame through the connecting strip rope, and the other side of the second fixed frame is connected with the bracket body. Optionally, the connecting strip rope is distributed between the first fixing frame and the bracket body in a spoke shape. Optionally, the connecting strip ropes are distributed between the first fixing frame and the bracket body in a cross grid shape, and the crossing points of the connecting strip ropes are at least partially connected with each other, and the crossing angle between the connecting strip ropes is between 30 degrees and 60 degrees. Optionally, the outer surface of the bracket body is provided with scale marks so as to facilitate the intraoperative cutting. Optionally, the connecting strip and/or the first fixing frame are made of degradable material, and the connecting strip and/or the first fixing frame are configured to have a degradation time in the range of 1-3 months. Optionally, the bracket body is provided with a pre-bending part, the pre-bending part is matched with the physiological bending of the parotid gland, and the bending angle of the pre-bending part is 70-125 degrees. Optionally, one end of the bracket body is also provided with a one-way valve, and the one-way valve is used for one-way outflow of saliva. The invention aims to solve the problems of unstable fixation, difficult suturing operation and the like of a parotid duct bracket in the background art by combining the core characteristics of structural design of a connecting component, adaptive shape of a first fixing frame, a redundant fixing mechanism of a second fixing frame, spoke-shaped or grid-shaped distribution optimization of connecting strips, intraoperative auxiliary functions of scale marks, accurate time control of degradable materials, physiological bending matching of a pre-bending part and the like, and preliminary experiments show that the falling risk can be reduced and the biocompatibility can be optimized. Drawings In order to more clearly illustrate the embodiments of the present patent, a brief description of the related drawings will be provided below. It is understood that the drawings in the following description are only for illustrating some embodiments of the present patent, and that one of ordinary skill in the art can obtain many other technical features and connection relationships not mentioned herein from the drawings. Fig. 1 is a schematic structural view of a parotid duct stent according to the embodiment of the present patent; fig. 2 is another sch