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CN-122003209-A - Surgical tissue clip application assembly and endoscope having tissue clip application assembly

CN122003209ACN 122003209 ACN122003209 ACN 122003209ACN-122003209-A

Abstract

The present disclosure relates to a surgical tissue clip application assembly (2) for an endoscope or an endoscope, comprising a tissue clip (4) for suturing tissue, a cap (6) which can be mounted on, in particular can be plugged onto, or is formed by a distal end section of the endoscope, and the tissue clip (4) is supported radially on a radial outer circumferential surface (10) of the cap, and a pull-out ring (8) which is arranged axially movably on the cap (6) and by an axial displacement of the pull-out ring enables the tissue clip (4) to be moved in a distal direction, wherein the cap (6) and the pull-out ring (8) are connectable or connected to one another in a rotationally fixed manner. Furthermore, the present disclosure relates to an endoscope with a surgical tissue clip application assembly (2).

Inventors

  • Hanna L v ck
  • CAPUTO ANTONIO
  • Mark O Shure

Assignees

  • 欧华内镜股份有限公司

Dates

Publication Date
20260508
Application Date
20231030

Claims (20)

  1. 1. A surgical tissue clip application assembly (2) for an endoscope (38) or endoscope (38) having A tissue clamp (4) for suturing tissue, A cap (6) which can be mounted on, in particular can be plugged onto, a distal end section (40) of the endoscope (38), or is formed by a distal end section (40) of the endoscope (38), and the tissue clip (4) is radially supported on a radial outer circumferential surface (10) of the cap, and A pull-out ring (8) which is arranged axially displaceably on the cover (6) and by means of which the tissue clip (4) can be displaced in the distal direction, Characterized in that the cover (6) and the pull-out ring (8) can be connected or connected to each other in a rotationally fixed manner.
  2. 2. The tissue clip application assembly (2) according to claim 1, characterized in that the pull-out ring (8) has a cover anti-relative rotation (12), in particular in the form of a projection (14) or preferably a plurality of projections (14), which can be engaged or engaged in a form-locking manner with the cover (6), in particular with one or preferably a plurality of corresponding recesses (16) formed in the cover (6), for the purpose of resisting relative rotation.
  3. 3. The tissue clip application assembly (2) according to claim 2, characterized in that the cover anti-relative rotation part (12), in particular the bulge (14) or each bulge of the plurality of bulges (14), has two abutment surfaces perpendicular to the circumferential direction for positively abutting against the cover (6), for example of substantially rectangular configuration in cross section.
  4. 4. A tissue clip application assembly (2) according to any one of claims 1 to 3, characterized in that the pull-out ring (8) has a base body (18), preferably of closed configuration on the circumferential side, in particular annular in cross section, and the cover anti-relative rotation part (12) extends away from the base body (18) in the proximal direction.
  5. 5. The tissue clip application assembly (2) according to any one of claims 1 to 4, characterized in that, for distal movement of the tissue clip (4) from an initial position, the pull-out ring (8) is axially movable in a distal direction and the pull-out ring (8) is preferably connected exclusively against relative rotation with the cover (6) in the initial position.
  6. 6. The tissue clip application assembly (2) according to any one of claims 1 to 5, wherein the tissue clip (4) has two diametrically opposed gripping sections (20) and two preferably arcuate hinge sections (22) each connecting the gripping sections (20), wherein the cover anti-relative rotation part (12) is arranged in the circumferential direction in the region of one of the hinge sections (22).
  7. 7. The tissue clip application assembly (2) according to claim 6, wherein the gripping section (20) is pivotable relative to each other about a hinge axis defined by the two hinge sections, wherein the cover anti-relative rotation portion (12) is configured symmetrically relative to a longitudinal plane axis preferably containing the hinge axis.
  8. 8. Tissue clip application assembly (2) according to any one of claims 1 to 7, characterized in that it comprises a pull-out device (30), in particular in the form of a rope pulling device, which is coupled to the pull-out ring (8) for axially displacing the pull-out ring (8) in such a way that a pulling force acts on the circumferential side of the pull-out ring (8) when the pull-out device (30) is actuated, wherein the cover anti-relative rotation (12) is preferably arranged only on the circumferential side of the pull-out ring (8) which is subjected to the pulling force.
  9. 9. The tissue clip application assembly (2) according to claim 8, wherein the cover anti-relative rotation portion (12) is symmetrically configured with respect to a longitudinal plane axis containing the introduction location of the pulling force.
  10. 10. The tissue clip application assembly (2) according to any one of claims 1 to 9, wherein the pull ring (8) and the tissue clip (4) are connected to each other in a rotationally fixed manner.
  11. 11. The tissue clip application assembly (2) according to claim 10, characterized in that the pull-out ring (8) has a clip anti-relative rotation (24), in particular in the form of a projection (26) or preferably a plurality of projections, in particular in the form of two projections (26), which can be snapped into or be snapped into engagement for anti-relative rotation with the tissue clip (4), in particular with one or preferably a plurality of corresponding abutment surfaces configured in the tissue clip (4).
  12. 12. The tissue clip application assembly (2) according to claim 11, characterized in that the clip anti-relative rotation (24), in particular the projection (26) or each projection of the plurality of projections (26), has two abutment surfaces inclined, in particular curved, to the circumferential direction for positively abutting against the tissue clip (4), for example of a substantially semi-elliptical configuration in cross section.
  13. 13. The tissue clip application assembly (2) according to any one of claims 10 to 12 and claim 4, wherein the clip anti-relative rotation portion (24) extends in a distal direction from the base body (18).
  14. 14. The tissue clip application assembly (2) according to any one of claims 10 to 13 and claim 6, wherein the clip anti-relative rotation (24) is arranged in the circumferential direction in the region of one of the gripping sections (20).
  15. 15. The tissue clip application assembly (2) according to any one of claims 10 to 14 and claim 7, wherein the clip anti-relative rotation portion (24) is symmetrically configured with respect to a first longitudinal plane axis, wherein the first longitudinal plane preferably corresponds to the longitudinal plane, and wherein the cover anti-relative rotation portion (12) is symmetrical with respect to the longitudinal plane axis.
  16. 16. The tissue clip application assembly (2) of claim 15, wherein the clip anti-relative rotation portion (24) is symmetrically configured with respect to a second longitudinal plane axis, wherein the second longitudinal plane is perpendicular to the first longitudinal plane.
  17. 17. The tissue clip application assembly (2) according to any one of claims 1 to 16 and claim 8, wherein the pull ring (8) has two diametrically opposed through holes (34) through which yarns (32) of the pull device (30) can be guided or guided, wherein a distal outlet (36) of the through holes (34) is arranged proximally of the clip anti-relative rotation portion (24).
  18. 18. The tissue clip application assembly (2) according to claim 17 and claim 6, wherein the through-holes (34) are arranged in the circumferential direction in the area of the hinge section (22).
  19. 19. Tissue clip application assembly (2) according to claim 17 and claims 6 and 11, characterized in that the clip anti-relative rotation part (24) is formed by two circumferentially offset partial projections (28) each acting as a circumferential stop in the rotation direction, wherein the through hole (34) is preferably arranged centrally between the two partial projections (28) in the circumferential direction.
  20. 20. The tissue clip application assembly (2) according to any one of claims 1 to 19, wherein the pull-out ring (8) has a color at least in sections, in particular at least on the inner circumferential side, preferably completely, which corresponds to a wavelength range of 380 nm to 500 nm, in particular 420 nm to 490 nm.

Description

Surgical tissue clip application assembly and endoscope having tissue clip application assembly Technical Field The present disclosure relates to surgical tissue clip application assemblies for endoscopes or endoscopes and endoscopes having such surgical tissue clip application assemblies. Background When introducing a medical product into a body opening, in particular into a hollow organ of a patient, an implantation procedure of an endoscope, which is low-risk for the patient itself, can be performed in a known manner. For example, it is known to fasten a medical product to a hollow organ starting from the inside of the hollow organ. The tissue clip/tissue collet is here preferably introduced into the hollow organ by means of an endoscope or similar propulsion means and positioned at a predetermined point/position inside the organ. For this purpose, the respective tissue clip is guided to the organ tissue and the clip is snapped on using the elastic hinge of the tissue clip and thereby secures the clip to the organ tissue. The tissue is then clamped between its gripping sections (/ (gripping) teeth/tips) to hold or clamp the tissue plications, whereby the gripping sections cut into (/ penetrate) the tissue and/or through the tissue. In the prior art, there are solutions for surgical tissue clips which are fastened to the organ tissue wall of a patient by means of an endoscopic scarf joint. Thus, for example, EP 2 449 983 B1 describes a clip which is introduced into the patient in the form of an open on the endoscope head and is then pushed in the forward/distal direction from the endoscope head in place, whereby the tissue clips together and the organ tissue is clamped between its gripping sections. Furthermore, methods exist in the prior art which enable or simplify the application of tissue clips, in particular the stripping of tissue clips. Thus, for example, EP 3 638 092 B1 shows a tissue clip application assembly comprising a tissue clip, a cap (/ cap attachment) which can be placed/inserted onto the distal end of an endoscope, and a pull-out ring which is axially slidably supported on the cap and can be pulled forward by means of a pull-out device in order to thereby push the tissue clip forward beyond the cap, such that the tissue clip is peeled off the cap. The pull-out ring is usually actuated here by a pull-out device, in particular in the form of a rope pulling device, which has a yarn coupled to the pull-out ring. For applying the pulling force, the yarn can be coupled to or to an actuating device, in particular in the form of a manually rotatable hand wheel, at the proximal end of the endoscope, i.e. at the operator-side end. The yarn may be fixedly connected to the hand wheel, for example clamped on the hand wheel, so that the yarn is wound up when the hand wheel is rotated and is thus pulled in the proximal direction. The yarn is preferably guided from the handling device inside the endoscope working channel to the distal end of the endoscope, i.e. to the patient-side end. At the tip of the endoscope or at a cover placed on the endoscope, the yarn is guided distally outwards (out of the endoscope working channel or an extension thereof) of the pull-out ring, coupled there with the pull-out ring, in particular (double) guided through the pull-out ring, guided again inwards distally of the pull-out ring (e.g. in the endoscope working channel) and there fixedly connected, for example, at the cover or at the endoscope. This fulfills the function that by pulling the yarn in the distal direction, the pull ring (and thus the tissue clip) can be moved (axially) until the tissue clip is distally pushed off the cover for its application. In particular, when preparing the tissue clip application assembly, in particular when applying the cap to the distal end of the endoscope, the problem arises that the tissue clip application assembly is fixed in the region of the pull-out ring and is often applied/plugged/pushed onto the endoscope using a screwing motion. The pull-out ring can be twisted on the cover, which in turn can cause problems when the pull-out ring is moved, since the thread guidance can be influenced by the changed rotational position and the pull-out ring can be skewed. This in turn can result in the tissue clip not being able to or not being able to be peeled off at the intended location. Disclosure of Invention It is therefore an object of the present disclosure to obviate or at least mitigate the above-mentioned disadvantages and in particular to provide a surgical tissue clip application assembly which ensures an easy, accurate and trouble-free application of tissue clips. The object of the present disclosure is solved by a surgical tissue clip application assembly having the features of claim 1. Advantageous developments are the subject matter of the dependent claims. The present disclosure is thus directed to a surgical tissue clip application assembly for an endoscope or endoscope,