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CN-122005164-A - Esophageal stent extractor

CN122005164ACN 122005164 ACN122005164 ACN 122005164ACN-122005164-A

Abstract

The application relates to the technical field of esophageal stent surgical instruments, in particular to an esophageal stent extractor which comprises a first sleeve, a core rod, a first hook component and a second hook component. The first sleeve comprises a first inner body end and a first outer body end, the core rod penetrates through the first sleeve, the core rod comprises a second inner body end and a second outer body end, the second inner body end extends out of the first inner body end, the second outer body end extends out of the first outer body end, the first hook claw assembly is connected with the first inner body end and used for hooking one end of the esophageal stent, and the second hook claw assembly is connected with the second inner body end and used for hooking the other end of the esophageal stent. The application has the effects of improving the safety of the esophageal stent extraction process and reducing the damage to the esophagus.

Inventors

  • XIE XINZHENG
  • DU WEI
  • Luo Songdi

Assignees

  • 常州市康心医疗器械有限公司

Dates

Publication Date
20260512
Application Date
20260323

Claims (10)

  1. 1. An esophageal stent remover, comprising: a first sleeve (1) comprising a first inner body end (11) and an outer body end (12); A core rod (2) penetrating through the first sleeve (1), wherein the core rod (2) comprises a second inner body end (21) and a second outer body end (22), the second inner body end (21) extends out of the first inner body end (11), and the second outer body end (22) extends out of the first outer body end (12); the first hook claw assembly (3) is connected with the first inner end (11) and is used for hooking one end of the esophagus support; And the second hook claw assembly (4) is connected with the second inner body end (21) and is used for hooking the other end of the esophageal stent.
  2. 2. The esophageal stent remover of claim 1, further comprising a second sleeve (5), wherein the second sleeve (5) comprises a third inner body end (51) and a third outer body end (52), wherein the first inner body end (11) extends into the second sleeve (5) via the third outer body end (52), wherein the first finger assembly (3) has a first unfolded state in which the first finger assembly (3) is capable of hooking an end of the esophageal stent remote from the stomach, and a first folded state in which the first finger assembly (3) is capable of being received in the second sleeve (5), wherein the second sleeve (5) is capable of restraining the first finger assembly (3) in the first folded state when the first finger assembly (3) is received in the second sleeve (5), wherein the first finger assembly (3) is capable of being placed in the second folded state when the first finger assembly (3) is placed in the second folded state when the second finger assembly (4) is received in the second sleeve (5), wherein the first finger assembly (3) is capable of being placed in the second folded state when the second finger assembly (4) is placed in the second sleeve (4) and the second sleeve (4) is placed in the second folded state when the first finger assembly (3) is placed in the second sleeve (5), the second sleeve (5) can limit the second hook claw assembly (4) to the second folded state, and the second hook claw assembly (4) can be automatically converted into the second unfolded state after being separated from the external limit in the second folded state.
  3. 3. An esophageal stent remover according to claim 2, characterized in that the first hook component (3) is provided with a plurality of hook components at intervals along the circumferential direction of the axis of the first sleeve (1), the first hook component (3) comprises a first swing rod (31), a first hook tooth (32) and a first elastic piece (33), one end of the first swing rod (31) is rotationally connected with the first inner body end (11), the other end of the first swing rod (31) extends in a direction away from the first inner body end (11), the rotation axis of the first swing rod (31) intersects with the central axis of the first sleeve (1), the first hook tooth (32) is connected with one end of the first swing rod (31) away from the first inner body end (11) and used for hooking one end of the esophageal stent away from the stomach, and the first elastic piece (33) is used for enabling one end of the first swing rod (31) away from the first inner body end (11) to generate a trend towards the first outer body end (12).
  4. 4. The esophageal stent extractor of claim 3, wherein the first hooking tooth (32) comprises a first connecting rod (321) and a first sphere (322), one end of the first connecting rod (321) is connected with one end of the first swinging rod (31) far away from the first inner end (11), the other end of the first connecting rod (321) is connected with the first sphere (322), the diameter of the first sphere (322) is larger than that of the first connecting rod (321), and a first groove (320) for accommodating a mesh wire of an esophageal stent is formed between the first sphere (322) and one end of the first swinging rod (31) far away from the first inner end (11).
  5. 5. An esophageal stent remover as claimed in claim 3, characterized in that the second hook component (4) is provided with a plurality of hook components at intervals along the circumferential direction of the axis of the core bar (2), the second hook component (4) comprises a second swing rod (41), a second hook tooth (42) and a second elastic piece (43), one end of the second swing rod (41) is rotationally connected with the second inner body end (21), the other end of the second swing rod (41) extends in a direction away from the second inner body end (21), the rotation axis of the second swing rod (41) intersects with the central axis of the core bar (2), the second hook tooth (42) is connected with one end of the second swing rod (41) away from the second inner body end (21) and used for hooking one end of the esophageal stent close to the stomach, and the second elastic piece (43) is used for enabling one end of the second swing rod (41) away from the second inner body end (21) to generate a trend of moving away from the second outer body end (12).
  6. 6. The esophageal stent extractor of claim 5, wherein the second hooking tooth (42) comprises a second connecting rod (421) and a second ball body (422), one end of the second connecting rod (421) is connected with one end of the second swinging rod (41) far away from the second inner body end (21), the other end of the second connecting rod (421) is connected with the second ball body (422), the diameter of the second ball body (422) is larger than that of the second connecting rod (421), and a second groove (420) for accommodating a mesh wire of an esophageal stent is formed between the second ball body (422) and one end of the second swinging rod (41) far away from the second inner body end (21).
  7. 7. An esophageal stent extractor as claimed in claim 5, wherein said second hook assembly (4) further comprises a return cord (44), one end of said return cord (44) being connected to an end of said second swing link (41) remote from said second body inner end (21), the other end of said return cord (44) extending beyond said first body outer end (12) via said first body inner end (11).
  8. 8. An esophageal stent extractor according to claim 2, characterized in that the first sleeve (1) and the second sleeve (5) are flexible tubes, and the core rod (2) is a steel wire.
  9. 9. The esophageal stent remover according to claim 1, further comprising a locking assembly (6), wherein the locking assembly (6) comprises a threaded sleeve (61) and a nut (62), wherein the threaded sleeve (61) is sleeved outside the second outer body end (22) and is connected with the second outer body end (22), the nut (62) is rotatably connected with the first outer body end (12) and is in threaded connection with the threaded sleeve (61), and the rotation axis of the nut (62) is parallel to the extending direction of the core rod (2).
  10. 10. The esophageal stent extractor as claimed in claim 1, wherein the second inner body end (21) is connected with a protective sleeve (7), and the protective sleeve (7) is made of rubber or silica gel.

Description

Esophageal stent extractor Technical Field The application relates to the technical field of esophageal stents, in particular to an esophageal stent extractor. Background The esophageal stent is a medical instrument for treating benign and malignant esophageal stenosis or obstruction such as esophageal cancer, anastomotic stoma stenosis after esophageal cancer operation, and the like, and can relieve obstruction, improve dysphagia of patients, and the like after being placed in the bodies of patients. When the esophageal stent is placed, the esophageal stent is carelessly operated to lead the esophageal stent not to reach a preset position, the symptom of a patient is relieved after treatment, the esophageal stent is shifted or the esophageal stent is embedded, the esophageal stent needs to be taken out, otherwise, the excessive retention of the esophageal stent can cause the pain of the patient caused by the stimulation of instruments, and the canceration can be possibly induced. In the related art, the patent with publication number CN115969599A discloses an esophageal stent extractor for an endoscope, which comprises a clamp head, an outer tube and a handle, wherein the front end of the outer tube is hinged with the clamp head, the rear end of the outer tube is fixedly connected with the handle, a guide rope for operating the clamp head to open and close is arranged in the outer tube, a controller capable of moving forwards and backwards is sleeved at the handle, the controller is fixedly connected with the guide rope, the esophageal stent extractor further comprises an outer sheath, the outer sheath is sleeved outside the outer sheath and can move forwards to wrap the clamp head in the inner part and move backwards to expose the clamp head, an elastic retaining piece capable of enabling the outer sheath to always wrap the clamp head in the inner part in a natural state is arranged on the handle, and the elastic retaining piece can move forwards and backwards in a synchronous manner with the outer sheath. However, when the esophageal stent extractor in the related art is used for extracting the esophageal stent, the esophageal stent needs to be pulled out of the esophagus from the installation position in the esophagus, and the stent is in sliding contact with the inner wall of the esophagus in the whole process, so that the esophagus is easily scratched or the esophageal mucosa is easily damaged. Disclosure of Invention In order to improve the safety of the esophageal stent extraction process and reduce the damage to the esophagus, the application provides an esophageal stent extractor. The application provides an esophagus support extractor, which adopts the following technical scheme: An esophageal stent remover, comprising: a first sleeve comprising a first body inner end and a first body outer end; The core rod penetrates through the first sleeve and comprises a second inner body end and a second outer body end, wherein the second inner body end extends out of the first inner body end, and the second outer body end extends out of the first outer body end; the first hook claw assembly is connected with the inner end of the first body and is used for hooking one end of the esophagus support; and the second hook claw assembly is connected with the inner end of the second body and is used for hooking the other end of the esophageal stent. By adopting the technical scheme, the safety of the esophageal stent taking-out process is improved, and the damage to the esophagus is reduced. Specifically, when the esophageal stent is taken out, the extractor is firstly sent to a designated position in the esophagus of a patient, so that the first inner body end and the second inner body end are close to the esophageal stent. And one end of the esophageal stent is hooked through the first hook claw assembly, and the other end of the esophageal stent is hooked through the second hook claw assembly, so that an operator can slide with the first sleeve through controlling the core rod to adjust the relative distance between the first inner body end and the second inner body end, and apply axial tension to the esophageal stent. Under the action of axial tension, the esophageal stent can be axially stretched and radially contracted, so that the outer wall of the esophageal stent is actively separated from or the compression on the inner wall of the esophagus is weakened. The mode of firstly shrinking and then taking out changes the traditional hard dragging mode, improves the safety of the esophageal stent taking out process, and reduces the mechanical damage to the esophagus. The first hook assembly is provided with a second unfolding state and a second folding state, the second hook assembly can be taken away from one end of the esophageal stent far away from the stomach in the first unfolding state, the first hook assembly can be accommodated in the second sleeve in the first folding state, the second sleeve can limit