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CN-121987267-A - Mucous membrane curler structure for endoscopic mucous membrane stripping operation and release device thereof

CN121987267ACN 121987267 ACN121987267 ACN 121987267ACN-121987267-A

Abstract

The invention belongs to the technical field of surgical instruments, and discloses a mucous membrane bending structure for endoscopic mucous membrane stripping operation, which comprises a first clamping arm and a second clamping arm, wherein the first clamping arm and the second clamping arm are connected through a pivot, a puncture pin is arranged on the first clamping arm, a clamping groove matched with the puncture pin is arranged on the second clamping arm, a strip-shaped memory metal body is connected to the end part of the first clamping arm, which is far away from the pivot, and is in an inward concave arc bending state in a natural state, a groove body is arranged in the strip-shaped memory metal body along the length direction of the strip-shaped memory metal body, a rigid supporting rod is detachably arranged in the groove body, and is used for restraining the strip-shaped memory metal body into a straight line shape in an initial state.

Inventors

  • WANG WEI
  • WANG YUNDONG
  • HE CHIYI

Assignees

  • 皖南医学院第一附属医院（皖南医学院弋矶山医院）

Dates

Publication Date
20260508
Application Date
20260331

Claims (10)

  1. 1. A mucosal flexure structure for endoscopic submucosal dissection, comprising: the clamping device comprises a first clamping arm (1) and a second clamping arm (2), wherein one end of the first clamping arm (1) is rotationally connected with one end of the second clamping arm (2) through a pivot (6); a puncture pin (16) is arranged on the surface of the first clamping arm (1) opposite to the second clamping arm (2), and a clamping groove (17) matched with the puncture pin (16) is arranged on the surface of the second clamping arm (2) opposite to the first clamping arm (1); The end part of the first clamping arm (1) far away from the pivot (6) is connected with a strip-shaped memory metal body (12), and the strip-shaped memory metal body (12) is in a concave arc-shaped bending state in a natural state; A groove body (3) is arranged in the strip-shaped memory metal body (12) along the length direction of the strip-shaped memory metal body (12), a rigid supporting rod (4) is detachably arranged in the groove body (3), and the rigid supporting rod (4) is used for restraining the strip-shaped memory metal body (12) into a linear shape in an initial state; The first clamping arm (1) and the second clamping arm (2) rotate around the pivot (6) to be close to the edge of the attached and clamped mucous membrane, the puncture pin (16) punctures the edge of the mucous membrane and then is clamped into the clamping groove (17) to be locked, and the strip-shaped memory metal body (12) is positioned on the surface of the mucous membrane; and the rigid support rod (4) is pulled away from the groove body (3), the strip-shaped memory metal body (12) is restored to a concave arc-shaped bending state on the surface of the mucous membrane, and the edge of the mucous membrane is turned upwards.
  2. 2. The submucosal dissection mucosal flexure mechanism according to claim 1, wherein, The first clamping arm (1) comprises a first connecting part (101) and a first clamping piece (102) connected to one end of the first connecting part (101); the second clamping arm (2) comprises a second connecting part (201) and a second clamping piece (202) connected to one end of the second connecting part (201); one end of the first connecting part (101) and one end of the second connecting part (201) are connected through the pivot (6); the puncture pin (16) is arranged on the first clamping piece (102), and the clamping groove (17) is formed in the second clamping piece (202).
  3. 3. The mucosa rolling structure for endoscopic submucosal dissection according to claim 2, further comprising a head tube body (5), wherein the pivot (6) is radially arranged in the head tube body (5) along the head tube body (5), and two ends of the pivot (6) are fixedly connected with the inner wall of the head tube body (5) respectively; the first connecting part (101) and the first clamping piece (102), the second connecting part (201) and the second clamping piece (202) extend outwards through a pipe orifice at one end of the head pipe body (5); and the first clip (102) and the second clip (202) are configured to be diametrically opposed.
  4. 4. A mucosa volume bending structure for endoscopic submucosal dissection according to claim 3, characterized in that, the first connecting portion (101) is provided with a first guiding opening (9) along the length direction thereof, the second connecting portion (201) is provided with a second guiding opening (10) along the length direction thereof, and the first connecting portion (101) and the second connecting portion (201) are respectively sleeved on the pivot (6) through the first guiding opening (9) and the second guiding opening (10) in sequence.
  5. 5. The submucosal dissection mucosal flexure structure for endoscopic submucosal dissection according to claim 4, further comprising a traction assembly (13), the traction assembly (13) comprising: The first through hole is formed in the end part of the first connecting part (101) far away from the first clamping piece (102); the second through hole is formed in the end part of the second connecting part (201) away from the second clamping piece (202); A connection piece (1301) arranged between the first connection part (101) and the second connection part (201), wherein a round hole is arranged on the connection piece (1301); the connecting shaft (1302) is fixedly arranged in the round hole in a penetrating way, and two ends of the connecting shaft (1302) respectively penetrate through the first penetrating opening and the second penetrating opening and are fixedly connected with the first penetrating opening and the second penetrating opening; A first wire (1303) connected to a side of the connection sheet (1301) away from the first connection portion (101) and the second connection portion (201); The first silk thread (1303) is pulled towards the direction away from the first connecting part (101) and the second connecting part (201), the first silk thread (1303) synchronously drives the first connecting part (101) and the second connecting part (201) to move through the connecting piece (1301) and the connecting shaft (1302), and the first guiding opening (9) and the pivot (6) and the second guiding opening (10) are mutually close and closed under the limit of the cooperation of the pivot (6), and the first connecting part (101) and the second connecting part (201) are mutually close and closed, and the first clamping piece (102) and the second clamping piece (202) are mutually close and closed.
  6. 6. A delivery device for an endoscopic submucosal dissection mucosal flexure mechanism according to claims 1 to 5, characterized by comprising: The end part of the head tube body (5) far away from the strip-shaped memory metal body (12) is at least partially embedded in one end of the delivery sheath tube (14); The blocking ring (15) is arranged on the inner wall of one end, close to the head pipe body (5), of the conveying sheath pipe (14), the inner diameter of the blocking ring (15) is smaller than the outer diameter of the head pipe body (5), and one end, embedded in the conveying sheath pipe (14), of the head pipe body (5) is abutted to the side face of the blocking ring (15); A second wire (7) arranged in the conveying sheath tube (14) along the length direction of the conveying sheath tube (14), wherein one end of the second wire (7) passes through the blocking ring (15) to extend into the head tube body (5) and is connected with one end of the first wire (1303) far away from the connecting sheet (1301); wherein the connection of the second wire (7) and the first wire (1303) is configured to be breakable when subjected to a pulling force in the axial direction thereof exceeding a first preset value.
  7. 7. The release device of a mucosa roll-off structure for endoscopic submucosal dissection according to claim 6, characterized in that the inner diameter of the delivery sheath (14) is equal to or larger than the outer diameter of the head tube body (5); The second silk thread (7) receives the pulling force of keeping away from the direction of first silk thread (1303), and the pulling force is transmitted to first silk thread (1303), drive first clamping piece (102) with second clamping piece (202) are closed, first clamping piece (102) with second clamping piece (202) continue pulling behind the closure second silk thread (7), head body (5) with under the effect of stopping ring (15) butt each other, first silk thread (1303) with second silk thread (7) junction fracture and separation.
  8. 8. The release device of the mucosa rolling structure for endoscopic submucosal dissection according to claim 7, characterized in that the end part of the delivery sheath tube (14) far away from the head tube body (5) is fixedly provided with the fixing rod (20), one end of the fixing rod (20) far away from the delivery sheath tube (14) is integrally formed with a fixing ring (21), and the fixing rod (20) is provided with a moving opening (22) in a penetrating way along the length direction.
  9. 9. The release device of the mucosa rolling structure for endoscopic submucosal dissection according to claim 8, characterized in that a sliding block (23) is sleeved on the fixed rod (20) in a sliding way along the length direction of the fixed rod, and one end of the second wire (7) far away from the first wire (1303) penetrates through the fixed rod (20) to extend into the moving opening (22) and is fixedly connected with the sliding block (23); both ends of the sliding block (23) perpendicular to the length direction of the fixed rod (20) are respectively provided with a push pull ring (24).
  10. 10. The release device of the mucosa curling structure for endoscopic submucosal dissection according to claim 7, characterized in that one end of the rigid support bar (4) close to the first connecting part (101) is fixedly connected with a traction wire (18), and the other end of the traction wire (18) is connected to the second wire (7); And after the first silk thread (1303) is separated from the second silk thread (7), the second silk thread (7) is continuously pulled, the second silk thread (7) is pulled by the pulling thread (18), and the rigid supporting rod (4) is pulled away from the groove body (3) by the pulling thread (18).

Description

Mucous membrane curler structure for endoscopic mucous membrane stripping operation and release device thereof Technical Field The invention relates to the technical field of surgical instruments, in particular to a mucous membrane bending and rolling structure for endoscopic mucous membrane stripping operation and a release device thereof. Background As a core treatment means of early cancer and precancerous lesions of the digestive tract, the endoscopic mucosa dissection (ESD) has become a clinical preferred diagnosis and treatment scheme by virtue of the advantages of small trauma and definite curative effect, and especially when treating mucosa lesions with larger area or irregular morphology, the endoscopic mucosa dissection method can realize the whole excision of lesion tissues compared with the traditional endoscopic treatment, and remarkably improves the prognosis effect of patients. However, as the technology is increasingly used in complex anatomical sites such as upper esophageal segment, gastric angle, colorectal bends, etc., and in specific types of lesions such as giant lateral development type tumors and scarring lesions, a series of clinical operating bottlenecks are gradually highlighted, which severely restricts further improvement of operation efficiency and safety. In the implementation process of ESD operation, accurate exposure and stable control of the mucous membrane edge are key preconditions for ensuring the smooth proceeding of the stripping operation. Because the space of the lumen of the alimentary canal is narrow, the anatomical structure is complex, the tissue texture of the mucous membrane is soft, the blood supply is rich, and an effective mucous membrane fixing and traction auxiliary means is lacked in the traditional operation, the mucous membrane edge is easy to shift and collapse due to the touch of an instrument, the peristaltic movement of the tissue or the bleeding in the operation, so that the peeling layer is difficult to clearly identify. Such poor exposure of the field of view increases the difficulty of the surgical procedure. To improve the above dilemma, various auxiliary techniques have been tried in clinic to optimize the operation procedure, such as using metal clips in combination with nylon ropes for mucosal traction, performing manual suture fixation by means of a dual-channel endoscope, etc. However, the existing schemes still have the remarkable limitations that the metal clip traction device has limited biting force, insufficient fixation stability on mucous membranes, easy falling or shifting, difficult adaptation to mucous membrane tissues with different thicknesses, and high operation technical threshold although the endoscopic stitching device can realize wound closure and tissue fixation to a certain extent. In addition, for complex cases such as ring Zhou Bingbian, scar lesions, the existing auxiliary instrument is often limited by the operation space or tissue hardness, can not effectively realize directional lifting and continuous exposure of the mucous membrane edge, and is easy to generate hierarchy shift in the peeling process, so that the risk of lesion residues or myometrium injury is increased. Meanwhile, the prior auxiliary technology focuses on wound surface closing or passive traction, when treating large-area mucous membrane lesions, sagging and accumulation of mucous membrane edges can further compress an operation space, so that a stripping instrument is difficult to perpendicularly act on a stripping plane, cutting precision is reduced, mucous membrane tearing is possibly caused by excessive traction, and secondary damage is caused. In summary, the lack of a simple and effective exposure means for the mucous membrane edge in the existing ESD operation results in the problems of difficult exposure and complex operation in the operation. Disclosure of Invention Therefore, the invention provides a mucosa curling structure for endoscopic mucosa dissection and a release device thereof, which are used for solving the technical problems of difficult exposure and complex operation caused by lack of a simple and effective exposure means for the mucosa edge in the existing ESD operation. In order to solve the technical problems, the invention specifically provides the following technical scheme: A mucosa roll structure for endoscopic mucosa dissection operation is provided with: The first clamping arm and the second clamping arm are connected with one end of the first clamping arm and one end of the second clamping arm through a pivot; a puncture pin is arranged on the surface, facing the second clamping arm, of the first clamping arm, and a clamping groove matched with the puncture pin is arranged on the surface, facing the first clamping arm, of the second clamping arm; The end part of the first clamping arm, which is far away from the pivot, is connected with a strip-shaped memory metal body, and the strip-shaped memory metal body is in