Search

CN-121987311-A - Flexible clamping device for foreign bodies in digestive tract of children

CN121987311ACN 121987311 ACN121987311 ACN 121987311ACN-121987311-A

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a flexible clamping device for foreign bodies in the digestive tract of children, which comprises an endoscope main body, wherein a hose is fixed at one end of the endoscope main body, a biopsy channel is formed in the hose, the flexible clamping device further comprises a polymorphic clamping module, the polymorphic clamping module is slidably assembled in the biopsy channel, and the polymorphic clamping module comprises a clamp rod, a driving guide wire, a first clamp head, a second clamp head, a third clamp head and a fourth clamp head, and the clamp rod is slidably assembled in the biopsy channel. According to the invention, the double-mode clamping structure of the V-shaped clamp type clamping unit formed by the first clamp head and the second clamp head and the parallel type clamping unit formed by the third clamp head and the fourth clamp head is arranged, so that the clamping mode can be flexibly switched according to the foreign body form, the device can adapt to the foreign bodies of the digestive tracts of children in various forms such as flat, regular, round, irregular and the like, and the clamping application range is greatly expanded.

Inventors

  • ZHANG QIONGJIE
  • SUN YAOYAO
  • LUO YAN
  • YANG SIMENG
  • XIE XIAOMIN
  • JIANG XUN
  • LIN YAN

Assignees

  • 中国人民解放军空军军医大学

Dates

Publication Date
20260508
Application Date
20260408

Claims (9)

  1. 1. The flexible clamping device for the foreign bodies in the digestive tract of the children is characterized by comprising an endoscope main body (10), wherein a hose (11) is fixed at one end of the endoscope main body (10), a biopsy channel is formed in the hose (11), and the device further comprises: The multi-form clamping module (20), the multi-form clamping module (20) is slidably assembled in the biopsy channel, the multi-form clamping module (20) comprises a clamp rod (21), a driving guide wire (22), a first clamp head (23), a second clamp head (24), a third clamp head (25) and a fourth clamp head (26), the clamp rod (21) is slidably assembled in the biopsy channel, the driving guide wire (22) is slidably connected in the clamp rod (21), the first clamp head (23) and the second clamp head (24) are respectively connected with one end, far away from the endoscope main body (10), of the clamp rod (21) in a rotating manner, the driving guide wire (22) and the first clamp head (23) are respectively connected with the driving guide wire (22) and the second clamp head (24), the third clamp head (25) is assembled on the outer side of the first clamp head (23), the fourth clamp head (26) is assembled on the outer side of the second clamp head (24), and the first clamp head (23) and the fourth clamp head (24) are respectively matched with the second clamp head (24) and the fourth clamp head (24) respectively; A plurality of driving modules (30), wherein the driving modules (30) are respectively assembled between the first clamp head (23) and the third clamp head (25) and between the second clamp head (24) and the fourth clamp head (26), and the driving modules (30) are configured to drive the third clamp head (25) and the fourth clamp head (26) to operate; the driving guide wire (22) is driven to operate, the first clamp head (23) and the second clamp head (24) form a V-shaped clamp type clamp unit, and when the first clamp head (23) and the second clamp head (24) are mutually attached, the driving module (30) is driven to operate the third clamp head (25) and the fourth clamp head (26) to form a parallel clamp unit.
  2. 2. The flexible clamping device for foreign bodies in the digestive tract of children according to claim 1, wherein the polymorphic clamping module (20) further comprises a first swing arm (27), a second swing arm (28) and a central shaft lever (29), the first swing arm (27) and the second swing arm (28) are both rotatably connected to one end of the driving guide wire (22), the first clamp head (23) and the first swing arm (27) as well as the second clamp head (24) and the second swing arm (28) are rotatably connected, the central shaft lever (29) is fixed to one end inside the clamp rod (21), and the first clamp head (23) and the central shaft lever (29) as well as the second clamp head (24) and the central shaft lever (29) are rotatably connected.
  3. 3. The flexible gripping device for foreign bodies in the digestive tract of children according to claim 1, wherein a first tooth is arranged at one end of the bottom of the third clamp head (25), a second tooth is arranged at one end of the top of the fourth clamp head (26), and the first tooth is matched with the second tooth.
  4. 4. The flexible clamping device for foreign bodies in the digestive tract of children according to claim 1, wherein a first clamping groove is formed in the bottom of the third clamp head (25), a second clamping groove is formed in the top of the fourth clamp head (26), and the first clamping groove is matched with the second clamping groove.
  5. 5. The flexible gripping device for foreign bodies in the digestive tract of children according to claim 1, wherein the driving module (30) comprises a first connecting rod (31), a second connecting rod (32), a driving connecting rod (33) and a driving pull rope (34), the first connecting rod (31) and the second connecting rod (32) are rotatably connected between the first clamp head (23) and the third clamp head (25), the driving connecting rod (33) is slidably connected inside the first clamp head (23), the first connecting rod (31) is slidably connected with the driving connecting rod (33), and the driving pull rope (34) is fixed at one end of the driving connecting rod (33), wherein the first clamp head (23), the third clamp head (25), the first connecting rod (31) and the second connecting rod (32) form a parallel four-bar mechanism.
  6. 6. The flexible gripping device for foreign bodies in digestive tracts of children according to claim 5, wherein a transmission section (35) is arranged at one end, far away from the endoscope main body (10), of the first connecting rod (31), a guide sliding groove is arranged in the transmission section (35), a sliding rod is fixed at one end, close to the transmission section (35), of the driving connecting rod (33), the sliding rod penetrates through the inside of the guide sliding groove, and the first connecting rod (31) and the driving connecting rod (33) are connected in a matched sliding mode through the sliding rod and the guide sliding groove.
  7. 7. A flexible gripping device for foreign bodies in the digestive tract of children according to claim 5, characterized in that an elastic restoring element (36) is arranged between the driving connecting rod (33) and the first clamp head (23), and the elastic restoring element (36) is in a compressed state in an initial state.
  8. 8. The flexible gripping device for foreign bodies in digestive tract of children according to claim 5, wherein the first connecting rod (31), the second connecting rod (32) and the driving connecting rod (33) are made of any one of 316L stainless steel, titanium alloy, PEEK and PC.
  9. 9. The flexible gripping device for foreign bodies in digestive tracts of children according to claim 5, wherein the driving pull rope (34) is made of any one of nylon/polyester braided rope, aramid fiber and medical stainless steel wire rope.

Description

Flexible clamping device for foreign bodies in digestive tract of children Technical Field The invention belongs to the technical field of medical appliances, and particularly relates to a flexible clamping device for foreign bodies in the digestive tracts of children. Background The foreign matters in the digestive tract are common accidental injury events in pediatric emergency, especially for infants from 6 months to 3 years old, the children in the age range have strong curiosity and weak safety consciousness, the foreign matters in the digestive tract are often detained due to the mistaken swallowing of coins, marbles, button cells, cards, toy parts and other articles, the infants generally need to accept the intervention of an endoscope to take out the foreign matters, otherwise, serious complications such as perforation of the mucous membrane of the digestive tract, obstruction, chemical corrosion and the like can be caused, and the life and health of the infants are endangered. The endoscopic foreign body extraction is a first-line method for treating the foreign body in the digestive tract of the children at present, has the advantages of being minimally invasive, efficient and safe, and the clamping stability and the application range of the clamping device are used as core auxiliary instruments for endoscopic operation, directly determine the success rate and the safety of foreign body extraction, and have important significance for reducing the risk of operation and protecting the digestive tract mucous membrane of the children. At present, the clamp type device is most widely applied to the instrument for clamping the foreign matters in the digestive tract of children in clinic, wherein most of the clamp type devices are V-shaped clamps. The utility model has the advantages of because children's alimentary canal foreign matter is of a wide variety, wherein coin, marble etc. circular foreign matter account for extremely high, and V-arrangement clamp's clamping end is rigid V-arrangement structure, only can form the point contact when contacting with circular foreign matter, clamping area is minimum, can't produce sufficient frictional force in order to realize effective centre gripping, the problem such as circular foreign matter slippage, shift easily appear, the operation degree of difficulty and time have been increased, still can lead to the foreign matter to cause secondary damage to alimentary canal mucous membrane, even cause the serious risk such as the mistaken suction trachea of foreign matter, and simultaneously, the structure of this kind of rigid V-arrangement clamp is fixed, be fit for flat form foreign matter (such as button cell, card etc.), the clamping effect is extremely poor to irregular foreign matter, smooth circular foreign matter (such as marble) is limited, be difficult to satisfy clinical diversified clamping demand, can't fully adapt to children's alimentary canal stenosis, tender physiological characteristics. In conclusion, the high-incidence and the harm of the foreign matters in the digestive tract of the children bring out strict requirements on the performance of the clamping device, the existing V-shaped clamp has the technical defects of unstable clamping, limited application range and the like, and the risk of surgical complications and the operation time are easily increased for the foreign matters in a specific shape, so that the surgical recovery of the child is not facilitated. Therefore, developing a clamping device that can solve the above-mentioned drawbacks, can realize effective clamping of different forms, especially circular foreign matters, has a wide application range and adapts to the characteristics of the digestive tract of children, and is a technical problem to be solved by those skilled in the art. Disclosure of Invention The invention aims to provide a flexible clamping device for foreign bodies in the digestive tract of children, which can flexibly switch the clamping mode according to the foreign body form by arranging a V-shaped clamp type clamping unit consisting of a first clamp head and a second clamp head and a double-mode clamping structure of a parallel type clamping unit consisting of a third clamp head and a fourth clamp head, so that the device can adapt to foreign bodies in the digestive tract of children in various forms such as flat, regular, round, irregular and the like, and the clamping application range is greatly expanded. The technical scheme adopted by the invention is as follows: The utility model provides a flexible clamp of children's alimentary canal foreign matter gets device, includes the endoscope main part, the one end of endoscope main part is fixed with the hose, biopsy channel has been seted up to the inside of hose, still includes: The multi-form clamping module is slidably assembled in the biopsy channel and comprises a clamp rod, a driving guide wire, a first clamp head, a second clamp head, a third clamp