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CN-122005058-A - Ablation device

CN122005058ACN 122005058 ACN122005058 ACN 122005058ACN-122005058-A

Abstract

The invention relates to an ablation device, which comprises a supporting part capable of stretching along the radial direction, wherein the supporting part comprises a front connecting section, a main body section and a rear connecting section which are sequentially arranged from front to back, the main body section comprises a plurality of supporting rods which are distributed at intervals in the axial direction, the supporting rods are connected end to end and are in a ring shape and extend in a wavy bending mode in the axial direction of the main body section, and the crest and trough parts of the supporting rods are connected with each other and are connected with a plurality of front supporting rods of the front connecting section and a plurality of rear supporting rods of the rear connecting section, so that each connecting part forms a U-shaped structure, the radial dimension of the supporting part can be adjusted in a larger range, the maximum reduction of the outer diameter of the ablation device is facilitated, the access to the alimentary canal of a human body is easier, the pain of a patient is reduced, the operation difficulty of operation is reduced, and the ablation device can pass through the forceps channel cavities of various endoscopes, and the complexity of operation is remarkably reduced.

Inventors

  • ZHOU YI
  • LI CHUANG
  • GU FAN
  • LV LISONG

Assignees

  • 上海小闯医疗科技有限公司

Dates

Publication Date
20260512
Application Date
20260317

Claims (15)

  1. 1. The ablation device is characterized by comprising a supporting component which can stretch along the radial direction, wherein the supporting component comprises a front connecting section, a main body section and a rear connecting section which are sequentially arranged from front to back, the main body section comprises a plurality of supporting rods which are distributed at intervals in the axial direction, the supporting rods are connected end to form a ring shape and extend in a wavy bending mode in the axial direction of the main body section, each supporting rod is provided with a plurality of wave crest parts arched forwards and a plurality of wave trough parts arched backwards, a connecting rod group is arranged between any two adjacent supporting rods, and the connecting rod group is connected between the wave trough parts of the supporting rods at the front side and the wave crest parts of the supporting rods at the rear side; the front connecting section comprises a plurality of front supporting rods, front end parts of all the front supporting rods are gathered and mutually fixed, rear end parts of all the front supporting rods are connected with a plurality of wave crest parts of the supporting rods positioned at the forefront side in a one-to-one correspondence mode, the rear connecting section comprises a plurality of rear supporting rods, rear end parts of all the rear supporting rods are gathered and mutually fixed, and front end parts of all the rear supporting rods are connected with a plurality of wave trough parts of the supporting rods positioned at the rearmost side in a one-to-one correspondence mode.
  2. 2. The ablation device of claim 1, wherein said set of connecting rods includes a plurality of connecting rods circumferentially spaced apart, each of said connecting rods being fixedly connected between one of said trough portions of said support rod on the anterior side and one of said crest portions of said support rod on the posterior side, respectively.
  3. 3. The ablation device of claim 2, wherein the number of the wave trough portions of the front side support bar is the same as the number of the wave crest portions of the rear side support bar in the two front and rear adjacent support bars, and the number of the connecting bars in the connecting bar group connected to the two support bars is the same, and the plurality of the connecting bars are connected between the plurality of wave trough portions of the front side support bar and the plurality of wave crest portions of the rear side support bar in a one-to-one correspondence.
  4. 4. The ablation device of claim 3, wherein all of said connecting rods have lengths extending parallel to the axis of said body segment and/or wherein all of said support rods have outer diameters equal to each other, said body segment being cylindrical.
  5. 5. The ablation device of claim 1, wherein a plurality of said peaks and a plurality of said valleys are circumferentially alternating in sequence and evenly spaced apart on each of said support rods.
  6. 6. The ablation device of claim 1, wherein an even number of the support rods are provided, all the wave crests of the support rods positioned at the foremost side are the same in number and in one-to-one correspondence with all the wave troughs of the support rods positioned at the rearmost side, and the front support rods and the rear support rods are the same in number and in one-to-one correspondence with each other in circumferential position.
  7. 7. The ablation device of any of claims 1-6, wherein the ablation device further comprises: an inner rod having a first proximal end and a first distal end, An outer rod having a second proximal end and a second distal end, the outer rod slidably sleeved over the inner rod and exposing the first distal end, The support component is sleeved on the inner rod, the front end parts of all the front support rods are fixedly connected with the first far end parts, and the rear end parts of all the rear support rods are fixedly connected with the second far end parts.
  8. 8. The ablation device of claim 7, further comprising an electrode assembly having a conductor member disposed on the support member and positioned on the body segment, wherein the conductor member is at least partially positioned circumferentially outward of the support member.
  9. 9. The ablation device of claim 8, wherein the conductor member is elongated, the conductor member is secured around the support rod, and/or the connector assembly includes a plurality of connector rods, and the conductor member is secured around some or all of the connector rods.
  10. 10. The ablation device of claim 9, wherein the conductor portion is wrapped around and secured to an outer peripheral portion of a portion of the shaft section of the support shaft.
  11. 11. The ablation device of claim 10, wherein the support rod has a wrapped section around which the conductor member is wrapped, and an exposed section over which the conductor member is not disposed, the wrapped section being longitudinally contiguous with the exposed section, wherein the wrapped section has a length greater than a length of the exposed section.
  12. 12. The ablation device of claim 9, wherein all of the connecting rods are circumferentially spaced apart and the connecting rods extend in a length parallel to the axis of the support member.
  13. 13. The ablation device of claim 12, wherein at least two of said connector rods are provided with said conductor members, and wherein all of said connector rods provided with said conductor members are circumferentially uniformly spaced apart.
  14. 14. The ablation device of claim 9, wherein the conductor member is a wire, the conductor member is spirally wound around an outer peripheral portion of the support rod or the connecting rod in a length extending direction of the support rod, and a plurality of conductive rings are formed on the support rod or the connecting rod, respectively, and adjacent two of the conductive rings have a spacing L in a front-rear direction, wherein L≤5d is a diameter of the wire.
  15. 15. The ablation device of claim 9, wherein the electrode assembly further comprises a lead having one end electrically connected to the conductor member and the other end extending to the second proximal end, wherein the lead comprises a metal core and an insulating sheath wrapped around an outer periphery of the metal core, and wherein the conductor member is integrally provided with the metal core.

Description

Ablation device Technical Field The invention relates to the field of medical instruments, in particular to an ablation device. Background In the prior art, a duodenal mucosa remodelling operation (DMR) is used as an emerging minimally invasive endoscopic operation, a special therapeutic instrument is led into the duodenum through an endoscope, and the duodenal mucosa is destroyed through external energy ablation, so that the duodenal mucosa remodelling is realized, the insulin resistance and nutrient metabolism of the organism are improved, and a novel endoscopic treatment means for treating the metabolic syndrome is achieved. The ablation devices are expandable to conform to the inner wall of the alimentary canal in an expanded state and to access the human alimentary canal in an unexpanded state. However, the prior art ablation devices are still relatively large in size in the unexpanded state, which not only increases the complexity of the surgeon's surgical procedures, but also presents significant pain to the patient. Disclosure of Invention The invention aims to provide an ablation device with a novel structure. The technical scheme includes that the ablation device comprises a supporting component capable of stretching along the radial direction, the supporting component comprises a front connecting section, a main body section and a rear connecting section which are sequentially arranged from front to back, the main body section comprises a plurality of supporting rods which are distributed at intervals in the axial direction, the supporting rods are connected end to form a ring shape and extend in a wavy bending mode in the axial direction of the main body section, each supporting rod is provided with a plurality of crest portions arched forwards and a plurality of trough portions arched backwards, a connecting rod group is arranged between any two adjacent supporting rods, and the connecting rod group is connected between the trough portions of the supporting rods at the front side and the crest portions of the supporting rods at the rear side; the front connecting section comprises a plurality of front supporting rods, front end parts of all the front supporting rods are gathered and mutually fixed, rear end parts of all the front supporting rods are connected with a plurality of wave crest parts of the supporting rods positioned at the forefront side in a one-to-one correspondence mode, the rear connecting section comprises a plurality of rear supporting rods, rear end parts of all the rear supporting rods are gathered and mutually fixed, and front end parts of all the rear supporting rods are connected with a plurality of wave trough parts of the supporting rods positioned at the rearmost side in a one-to-one correspondence mode. In some embodiments, the connecting rod group includes a plurality of connecting rods distributed at intervals in a circumferential direction, each of the connecting rods being fixedly connected between one of the trough portions of the front side and one of the crest portions of the rear side of the supporting rod, respectively. In some embodiments, in the two adjacent support rods, the number of the trough parts of the support rod on the front side is the same as the number of the crest parts of the support rod on the rear side, and the number of the connecting rods in the connecting rod group connected in the two support rods is the same, and the plurality of the connecting rods are connected between the plurality of trough parts of the support rod on the front side and the plurality of the crest parts of the support rod on the rear side in a one-to-one correspondence manner. In some embodiments, all the connecting rods have lengths extending in directions parallel to the axis of the main body section, and/or all the support rods have the same outer diameter, and the main body section is cylindrical. In some embodiments, on each support bar, a plurality of the peak portions and a plurality of the trough portions are alternately and uniformly spaced in turn in the circumferential direction. In some embodiments, the support rods are provided with an even number, all wave crest parts of the support rods positioned at the foremost side are in the same number as all wave trough parts of the support rods positioned at the rearmost side and are in one-to-one correspondence with each other in the circumferential direction, and the front support rods are in the same number as the rear support rods and are in one-to-one correspondence with each other in the circumferential direction. In some embodiments, the ablation device further comprises: an inner rod having a first proximal end and a first distal end, An outer rod having a second proximal end and a second distal end, the outer rod slidably sleeved over the inner rod and exposing the first distal end, The support component is sleeved on the inner rod, the front end parts of all the front support rods are fixedly connecte