Surgical clip
By designing a surgical clamp with a closed-loop structure, and utilizing rounded gripping teeth and wavy gaps, the problem of tissue damage during clamping in existing technologies has been solved, achieving a safer tissue clamping and anchoring effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- OVESCO ENDOSCOPY AG
- Filing Date
- 2023-10-30
- Publication Date
- 2026-05-08
AI Technical Summary
Existing surgical clips are prone to unnecessarily damaging healthy tissue, especially thin and fresh tissue, during use, and pose a high risk of mucosal injury.
Design a surgical clip with a closed-loop structure, having two gripping sections and two elastically deformable hinged sections. The gripping sections have multiple gripping teeth, and a wavy gap is formed between the ends of the hinged sections and the gripping sections. The gripping teeth are rounded to avoid penetrating tissue. The hinged sections and the gripping sections are connected by bending to ensure clamping force and reduce tissue damage.
This reduces unnecessary tissue damage during clamping, especially damage to thin and sensitive tissues, improves anchoring stability, and reduces the risk of mucosal injury.
Smart Images
Figure CN122003208A_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to a surgical clip for endoscopic treatment of gastrointestinal bleeding, comprising a closed ring having two gripping sections, each gripping section having a base section and a plurality of gripping teeth configured for suturing tissues, such as the stomach wall or colon, or for sealing chronic or acute wall injuries in the human or animal body. Background Technology
[0002] When introducing medical products into body openings, particularly into a patient's hollow organs, the endoscopic implantation process can be performed in a known manner that is low-risk for the patient. For example, it is known to secure the medical product to the hollow organ from within. Here, a tissue clamp or clip is preferably introduced into the hollow organ by means of an endoscope or similar propulsion device and positioned at a predetermined point or location inside the organ. The corresponding clip is then guided to the organ tissue and its elastic hinge is used to snap it in place, thereby securing the clip to the organ tissue. The clip then holds or clamps tissue folds between its gripping teeth, which may optionally have spikes capable of cutting into or penetrating the tissue, preferably piercing it.
[0003] Surgical (tissue) clips capable of being secured to the walls of a patient's organ tissue via endoscopic surgery are known in the prior art. Thus, for example, EP 2 449 983 B1 discloses a clip introduced into the patient in an open form over an endoscope and then pushed forward from the endoscope at the appropriate position, thereby clamping together and firmly securing the organ tissue between its grasping teeth. The described clip here has a plurality of sharp barb geometries or spikes that penetrate the clamped tissue to additionally anchor the clip. Furthermore, additional laterally arranged spikes or tips are used to capture larger volumes of tissue, generate greater clamping force, and penetrate more tissue for improved anchoring.
[0004] However, the insertion of laterally positioned spikes or tips into the tissue has proven to be partially detrimental. In particular, it has been found that laterally positioned spikes or tips can damage or compress healthy tissue that has been unnecessarily penetrated. This is especially true for thin and fresh tissue types, which are unnecessarily damaged or compressed. Summary of the Invention
[0005] Therefore, the objective of this disclosure is to avoid or at least mitigate the aforementioned disadvantages, and in particular to provide a surgical (tissue) clip that automatically applies clamping forces to two regions for reliable suturing of tissue, such as the stomach wall, without unnecessarily damaging healthy tissue and thus handling tissue more gently overall. Specifically, the objective of this disclosure is to provide a surgical clip with suitable clamping properties that reduces the risk of unnecessary tissue damage.
[0006] As an additional, independent task necessary for this disclosure, the risk of mucosal injury, particularly when introducing the tissue clip into a patient's hollow organ, should be reduced through appropriate manufacturing processes.
[0007] This disclosure first relates to a surgical clip with the features of claim 1.
[0008] Therefore, this disclosure relates to a surgical (tissue) clip comprising a closed ring / circular plate having a first gripping section and a second gripping section, and two elastically deformable hinged sections / arches. Each gripping section has a base section and a plurality of gripping teeth located between two circumferential end / edge sections of each gripping section and being substantially parallel to each other and extending away from the respective base section. The hinged sections / arches are arranged adjacent to the circumferential ends of the gripping sections, wherein the hinged sections have a bend extending inwards towards the ring such that the hinged sections and the circumferential ends of the gripping sections at least partially face each other, thereby creating a gap between the hinged sections and the circumferential ends of the gripping sections. Here, at least one gripping section, preferably two gripping sections, has a plurality of rounded or circular compression teeth extending toward the articulated section, such that the gap between the articulated section and the circumferential end of the gripping section has a wavy geometry or is configured to be wavy for (additionally) compressing tissue.
[0009] In other words, the surgical clip according to this disclosure has a ring geometry with two gripping sections having multiple gripping teeth. The gripping teeth of the two gripping sections are arranged such that they are opposite each other. The edges of the two gripping sections extending beside the gripping teeth have multiple rounded protrusions arranged side by side to form a wavy geometry. These wavy protrusions point to a curved, arc-shaped hinge section that connects the two gripping sections to each other.
[0010] Advantageously, this type of surgical clip can hold tissue between corresponding grasping teeth and between laterally arranged rounded compression teeth and arc-shaped hinge sections. This allows for the capture of a larger tissue volume, resulting in improved anchoring of the clip against the organ wall. Furthermore, the rounded shape of the compression teeth additionally ensures that healthy and, especially, thin and sensitive tissues are not unnecessarily punctured or penetrated, thus minimizing the risk of tissue damage. Preferably, the tissue is only squeezed together or compressed by the compression teeth without penetrating the tissue.
[0011] Therefore, this disclosure is based on the understanding that the laterally arranged teeth, referred to as squeeze teeth according to this disclosure, should only be used for clamping or holding tissue. In other words, the laterally arranged squeeze teeth are not configured to penetrate tissue. According to this disclosure, this is advantageously applicable not only to young tissue but also to older tissue, and not only to thin tissue but also to thick tissue. Therefore, this disclosure utilizes the advantages of lateral squeeze teeth, namely, the ability to capture larger volumes of tissue and generate greater clamping force, while simultaneously avoiding the disadvantages mentioned at the beginning. In other words, this disclosure provides lateral (squeezing) teeth constructed with rounded and wavy clamping edges, wherein the gap between adjacent hinged sections is chosen to be so small that the lateral (squeezing) teeth, together with the hinged sections, can apply a suitable clamping force to the clamped tissue. Therefore, setting the clamping edges or wavy geometry / shape to be rounded or wavy preferably means that the direction or lateral profile of the (extrusion) teeth (in the top view of the extrusion teeth) has no sharp point or bend, but extends in a rounded or circular manner throughout its entire lateral profile.
[0012] Advantageous embodiments are claimed in the dependent claims and / or set forth below.
[0013] In a preferred aspect of this disclosure, a plurality of rounded or circular extrusion teeth are arranged on the circumferential ends such that a notch or cut is created between every two extrusion teeth in the respective gripping sections, thereby constructing a wave geometry or wave shape of the sequentially arranged or side-by-side extrusion teeth.
[0014] In another preferred embodiment of this disclosure, the ends of the two circumferential sides of the first gripping section each have at least two squeezing teeth, and / or the ends of the two circumferential sides of the second gripping section each have at least one squeezing tooth.
[0015] In other words, the circumferential ends of the two gripping sections preferably have rounded protrusions in the form of compression teeth, which are arranged on the respective circumferential ends such that the corresponding side-by-side compression teeth smoothly transition to each other, specifically through notches arranged between the corresponding compression teeth. That is, the wave geometry is produced by the alternating arrangement of at least one rounded protrusion and at least one rounded notch that smoothly transitions to each other. This arrangement of the compression teeth enables reliable and risk-free compression of additional tissue during the placement of the surgical clip. It should be noted that the notch can theoretically also be constructed as a pointed shape or have a bend.
[0016] Further preferably, the circumferential end of the first gripping section is arranged so close to the circumferential end of the second gripping section that the wavy or wavy geometry is continued in the transition area between the two gripping sections. Therefore, preferably, the squeezing teeth of the first gripping section and the adjacent or neighboring squeezing teeth of the second gripping section are also constructed and coordinated with each other, so that these squeezing teeth are constructed or continue the wavy or wavy geometry.
[0017] In another advantageous aspect of this disclosure, the circumferential ends of the two gripping sections (viewed holistically) extend completely or almost completely through the length or circumference of the curved articulated section. This means that the articulated section of the surgical clip extends almost entirely along the opposing circumferential ends of the gripping sections, such that the compression teeth arranged at the circumferential ends and the wave geometry constructed by these compression teeth also extend almost entirely along the circumference of the articulated section, thereby creating an intermediate section with the largest possible clamping force between the circumferential ends of the gripping sections and the articulated section. This advantageously allows for the clamping of more tissue structures, thereby improving the anchoring stability of the clip.
[0018] In another preferred embodiment of this disclosure, the first gripping section has four gripping teeth and the second gripping section has five gripping teeth.
[0019] In another preferred aspect of this disclosure, the gripping teeth each have additional tips or spikes at their ends for anchoring in tissue, and these tips or spikes are configured as extensions of the ends.
[0020] In other words, additional spikes, blades, or thorns extending from the ends of the gripping teeth can be constructed on the gripping teeth. These spikes can be used to additionally penetrate or pierce the tissue clamped by the gripping teeth, especially from both sides, to ensure improved retention of the clamping on the tissue. This is particularly advantageous when the tissue is thick. Therefore, according to this disclosure, the gripping teeth may or may not have spikes, blades, or thorns. However, the squeezing teeth preferably do not have such spikes, blades, or thorns on their sides.
[0021] Therefore, in the preferred embodiment, the compression teeth do not have spikes, angular segments, or tips. This ensures that the tissue is not unnecessarily damaged by the lateral compression teeth, but is only reversibly squeezed together or compressed by the compression teeth, which leads to a reduction in the risk of endoscopic surgery.
[0022] In another preferred embodiment of this disclosure, the elastically deformable hinge section has rounded extrusion teeth that are configured to complement the extrusion teeth at the circumferential ends of the gripping section for constructing a wave geometry or wave shape.
[0023] In other words, the articulated section, arranged relative to the circumferential end of the gripping section, can have additional rounded pressing teeth on the articulated section side, which are configured to complement the wave geometry of the circumferential end. Specifically, the pressing teeth of the articulated section are arranged opposite to the notches constructed between the two pressing teeth respectively on the circumferential end. This advantageously enhances or more fully constructs the wave geometry or wave shape of the gap between the circumferential end and the articulated section, thereby improving the clamping effect of the pressing teeth or resulting in an increase in the clamping force of the pressing teeth. When designing the pressing teeth on the articulated section side, a slight reduction in the clamping force of the articulated section should be considered.
[0024] In another preferred aspect of this disclosure, the surrounding edges or end edges or tooth edges of the gripping teeth and / or squeezing teeth are configured to be rounded to facilitate the improved introduction of the surgical clip into the patient's body opening.
[0025] In other words, the end edges of the gripping teeth and / or squeezing teeth preferably have radii or additional rounded corners to prevent abrasions to tissues, especially the mucosa of hollow organs, during endoscope insertion and clamp placement. Furthermore, the end edges are preferably not literal edges, but rather rounded or radii. Providing such radii or additional rounded corners on the squeezing teeth can also advantageously result in a gentler or finer gripping of the tissue between the squeezing teeth and the articulated section.
[0026] Preferably, the rounded edges of the end edges of the gripping teeth and / or squeezing teeth are manufactured by spraying particles, especially ceramic spheres, onto the teeth of the grippers, and by rounding the edges of the teeth at their tips (if the gripping teeth are provided with spikes or points) or at their ends. The corresponding manufacturing method will be described in detail later.
[0027] The rounded edges of the gripping teeth and / or the squeezing teeth preferably have a rounding radius of 0.05 mm to 0.40 mm, more preferably 0.10 mm to 0.30 mm, and particularly preferably 0.10 mm to 0.20 mm.
[0028] In another preferred aspect of this disclosure, the clamp is arched, such that the gripping section has a substantially arcuate curve extending along the gripping teeth. As the clamp passes over this arch / curve of the gripping teeth, the gripping teeth are preferably arranged in a shark-mouth shape.
[0029] In another advantageous embodiment of this disclosure, at least one base section of the gripping section has a through opening substantially halfway between the ends on the circumferential side.
[0030] In another preferred aspect of this disclosure, the through opening forms a separate connecting ring on which the medical device can be anchored or is anchored.
[0031] In another preferred aspect of this disclosure, the gripping teeth of the gripping segments are configured and arranged such that, in the closed state of the surgical clip, the gripping teeth of each gripping segment are alternately / interlaced opposite each other.
[0032] In another aspect of this disclosure, the surgical clip is integrally manufactured from a resilient sheet material, particularly a spring-resilient sheet material.
[0033] This disclosure also relates to a system according to claim 15, a system for applying the surgical clip as described above to compress body tissue at a location in a patient's body cavity, comprising an endoscope cap and an application device, the surgical clip being disposed on the endoscope cap, the application device being configured and set to apply the surgical clip to body tissue.
[0034] The application device preferably has at least one trigger line, through which the user can trigger the clip to apply the medication.
[0035] The application device also preferably has a pull-out ring, wherein the pull-out ring is disposed on the endoscope cap and the surgical clip is disposed on the pull-out ring, wherein the application device is designed such that, by manipulating a trigger line, the pull-out ring is movable and the surgical clip is movable together with the pull-out ring to detach the surgical clip from the endoscope cap and apply it to body tissue.
[0036] Preferably, the system also includes an endoscope with an endoscope cap disposed on the distal end of the endoscope.
[0037] Depending on the aspect for which independent protection may be claimed, this disclosure also relates to a method for manufacturing a surgical clip, the method comprising at least the steps of: spraying a pair of clips, particularly the teeth of the clips, with particles, especially balls preferably made of ceramic, and accompanied by rounding the edges of the teeth at their tips or ends.
[0038] Surgical clips can be designed as described above, but do not necessarily have to have the lateral compression teeth according to this disclosure. Therefore, the teeth can be understood simply as grasping teeth, or alternatively, as many as grasping teeth and compression teeth, provided they are present.
[0039] In other words, the spraying method according to this disclosure, especially the ball spraying method, allows for the rounding or radius-enhancing of the edges of the teeth, particularly the gripping teeth and / or squeezing teeth, thereby minimizing the risk of injury, particularly to the mucosa, when introducing an endoscope or surgical clip into the patient. This also prevents the gripping teeth from accidentally scraping or snagging on the organ wall.
[0040] Preferably, the rounded tooth edge has a rounding radius of 0.05 mm to 0.40 mm, more preferably 0.10 mm to 0.30 mm, and particularly preferably 0.10 mm to 0.20 mm.
[0041] According to its advantages, the (ceramic) particles, especially (ceramic) spheres, have a diameter of 100 µm to 1180 µm, preferably 300 µm to 425 µm.
[0042] Ceramic particles, especially ceramic spheres, may contain ZrO2 and / or SiO2 and / or AlO2.
[0043] The spraying can be carried out at an intensity of 0.10 mmA to 0.20 mmA, preferably 0.16 mmA to 0.17 mmA.
[0044] The injection can be performed at a pressure of 5 to 7 bar, preferably about 6 bar.
[0045] Particularly preferably, the blasting is carried out with a coverage factor of 1.5 × t = 98%. Preferably, the factor is in the range of 1 to 3, especially 1.5, and the (shot peening) coverage is at least 93%, preferably 98%.
[0046] Methods for manufacturing surgical clips may also include: stamping, etching, or laser machining a basic geometry from a (spring) steel plate or other suitable metal (e.g., nitinol or a hyperelastic material); in particular, gripping teeth (and extrusion teeth) are produced in the same step; the gripping teeth (and extrusion teeth) are blasted with (ceramic) particles; and the basic geometry is arched to create articulated and gripping sections. Alternatively, the gripping teeth (and extrusion teeth) may be produced in an additional step, for example, by laser cutting.
[0047] Furthermore, according to aspects for which independent protection may be claimed as necessary, this disclosure relates to a surgical clip comprising a closed ring having a first grasping section and a second grasping section and two elastically deformable hinged sections. The first and second grasping sections each have a base section and a plurality of grasping teeth located between two circumferentially adjacent ends of each grasping section and substantially parallel to each other, extending away from the respective base section. The hinged sections are arranged adjacent to the circumferentially adjacent ends of the grasping sections, wherein the hinged sections have a bend extending inwards towards the ring such that the hinged sections and the circumferentially adjacent ends of the grasping sections at least partially face each other, thereby creating a gap between the hinged sections and the circumferentially adjacent ends of the grasping sections. Here, the (end) edges or tooth edges of the grasping teeth are rounded to facilitate the efficient introduction of the surgical clip into the patient's body opening.
[0048] Preferably, the rounded tooth edge has a rounding radius of 0.05 mm to 0.25 mm, more preferably 0.1 mm to 0.2 mm.
[0049] Preferably, the surgical clip according to this aspect is manufactured using the aforementioned method. Attached Figure Description
[0050] The present disclosure will now be explained in more detail with reference to advantageous embodiments and the accompanying drawings. It is shown that: Figure 1 A perspective top view of a surgical clip according to a first preferred embodiment of the present disclosure; Figure 2 An exemplary perspective side view of a surgical clip according to a first preferred embodiment of the present disclosure; Figure 3 An exemplary isometric view of a surgical clip according to a second preferred embodiment of the present disclosure; Figure 4 An enlarged perspective top view of the gap between the circumferential end of the gripping section and the hinge section of the surgical clip in the second preferred embodiment of this disclosure. Figure 5 An exemplary perspective view of the gripping teeth of a surgical clamp in a preferred embodiment of this disclosure; Figure 6 A first exemplary perspective side view of a surgical clip in an open and installed state on an endoscope accessory according to a third preferred embodiment of the present disclosure; Figure 7 A second exemplary perspective side view of the surgical clip on the endoscope accessory in an open and installed state according to a third preferred embodiment of the present disclosure; Figure 8This is a third exemplary perspective side view of a surgical clip in an open and installed state on an endoscope accessory according to a third preferred embodiment of the present disclosure; Figure 9 This is a flowchart of a method for manufacturing a surgical clip according to a preferred embodiment of the present disclosure.
[0051] The accompanying drawings are merely illustrative and intended only for understanding this disclosure. It should be noted that features of the various embodiments can be interchanged and can appear in specific combinations. Detailed Implementation
[0052] The following will refer to Figures 1 to 9 This disclosure is described with reference to advantageous embodiments. Hereinafter, Figure 1 and Figure 2 A view of a surgical clip according to a first preferred embodiment is shown. Figure 3 and Figure 4 An exemplary view of a surgical clip according to a second preferred embodiment is shown. Furthermore, Figure 5 A view showing the gripping teeth of a surgical clamp according to a preferred embodiment. Figures 6 to 8 A view showing the surgical clip placed according to the third embodiment is provided, and Figure 9 A flowchart illustrating a method for manufacturing a surgical clip according to the present disclosure is shown.
[0053] Figure 1 and Figure 2Exemplary perspective top and perspective side views of a surgical clip 2 in a closed state according to a first preferred embodiment of the present disclosure are shown. The surgical clip 2 is integrally constructed in the form of a closed loop, having a first gripping section 4 with a base section 5 and a second gripping section 6 with a base section 7. The two gripping sections 4 and 6 are connected by two elastically deformable arcuate hinge sections 8. The hinge sections 8 each have a bend / arch extending inward toward the closed loop. The two gripping sections 4 and 6 have a plurality of gripping teeth 10 extending parallel to the respective base sections 5 and 7 and gradually tapering toward the opposing base sections 5 and 7. Furthermore, the surgical clip 2 is constructed with arches along the sequentially arranged gripping teeth 10. According to this first preferred embodiment, each gripping tooth 10 has an additional spike 11 configured as an extension of the corresponding gripping tooth 10. In this preferred embodiment, the first gripping section 4 has four gripping teeth 10 and the second gripping section 6 has five gripping teeth 10, which interlock complementaryly in a shark-tooth shape. The base section 5 of the first gripping section 4 has circumferential ends 12 on its two lateral edges, and the base section 7 of the second gripping section 6 has circumferential ends 14 on its two lateral edges. The circumferential ends 12 of the base section 5 have two rounded pressing teeth 16 and 17 extending toward the hinge section 8, while the circumferential ends 14 of the base section 7 have three rounded pressing teeth 18, 19, and 20 extending toward the hinge section 8. These pressing teeth 16, 17, 18, 19, and 20 are arranged to create gaps between them and the hinged section 8. These gaps acquire a wavy shape on at least one side due to the rounded pressing teeth 16, 17, 18, 19, and 20 and the recesses between them. The pressing teeth 16, 17, 18, 19, and 20 almost completely cover the arc / circumference of the opposing hinged section 8. Furthermore, a through hole 22 is centrally arranged between the circumferential ends 12 on the base section 5.
[0054] Figure 3 This is an exemplary isometric view of a surgical clip 2 according to a second preferred embodiment of the present disclosure. In this equally preferred second embodiment, the surgical clip 2 is configured to... Figure 1 and Figure 2 The surgical clip 2 of the first embodiment is almost identical. The difference is that the surgical clip 2 of the second embodiment does not have the spikes 11 on the grasping teeth 10. In addition, the gaps between the circumferential ends 12, 14 of the base sections 5, 7 and the hinge section 8 are constructed differently, and their shapes will be described later. Figure 4 The accompanying drawings describe this in more detail.
[0055] Figure 4An enlarged perspective top view shows the gap between the circumferential ends 12, 14 of the base sections 5, 7 and the hinge section 8 of the surgical clip 2 in the second preferred embodiment of this disclosure. In this second embodiment, the surgical clip 2 also has two compression teeth 16, 17 at the circumferential end 12 of the base section 5. However, the circumferential end 14 of the base section 7 each has only one compression tooth 20, which smoothly transitions to the outermost gripping tooth 10 of the second gripping section 6 via a rounded notch / cut. These two outermost gripping teeth 10 do not extend parallel to the remaining gripping teeth 10, but rather, similarly, are inclined towards the arcuate hinge section 8 like the compression teeth 20. Therefore, these two outer gripping teeth 10 can be said to simultaneously construct additional lateral compression teeth. In addition, the articulated section 8 also has two additional rounded extrusion teeth 24, which extend toward the circumferential ends 12, 14 and are arranged (at a distance) in a complementary manner to the wavy notches of the extrusion teeth 16, 17, 20 which are arranged opposite to them.
[0056] Figure 5 This is an exemplary perspective view of the gripping teeth 10 of the surgical clip 2 according to a preferred embodiment of the present disclosure. The rounded edges 25 of the gripping teeth 10 are clearly visible in this view. Therefore, in this preferred embodiment, the gripping teeth 10 have a radius designed to reduce the risk of injury from the clip 2, particularly avoiding scratches or abrasions to the mucous membranes of hollow organs. The rounding radius R here is approximately 0.1 mm to 0.2 mm.
[0057] Figures 6 to 8 An exemplary perspective side view is shown of the surgical clip 2 according to a third preferred embodiment of the present disclosure in a flipped-up / opened state and mounted on the endoscope cap or endoscope accessory 26. Here, Figure 6 A side view of the first gripping section 4, in which through-holes 22 are arranged, is shown. Figure 7 A side view of the second gripping section 6 of the surgical clip 2 being installed is shown. Figure 8A side view of the hinged section 8 of the installed, open surgical clip 2 is shown. In this open or open state, the surgical clip 2 is positioned on the endoscope cap or endoscope attachment 26 such that the basic shape of the closed loop of the clip 2, formed by the two gripping sections 4, 6 and the two hinged sections 8, encloses the circumference of the endoscope attachment 26. Here, the gripping teeth 10 or the ends of the gripping sections 4, 6 point in the axial direction of the endoscope attachment 26 (upward in this view). Similarly, the hinged section 8 of the surgical clip 2 is more strongly bent by the opening / opening of the gripping sections 4, 6. In this positioned state of the clip 2, the hinged section 8 and its bending / arching also point in the axial direction, i.e., toward the upper end or upper opening of the endoscope attachment 26. Furthermore, a pull-out ring or placement ring 28 is provided between the endoscope attachment 26 and the surgical clip 2. The clip is applied by the user pulling the trigger line 30. Pulling the trigger line 30 causes the pull-out ring or placement ring 28 to move together with the surgical clip 2, until the surgical clip 2 detaches from the endoscope cap or endoscope accessory 26 and is applied to the body tissue. This third embodiment of the surgical clip 2 has the same structure as the first embodiment of the clip 2 described above, except that the gripping teeth 10 do not have spikes 10.
[0058] Figure 9 This is a flowchart of a method for manufacturing a surgical clip 2 according to a preferred embodiment of the present disclosure. The method for manufacturing the surgical clip 2 includes the steps of: stamping, etching, or laser processing a basic geometry from a (spring) steel plate S1, including generating gripping teeth 10 and / or pressing teeth 16, 17, 18, 19, 20; spraying (ceramic) particles onto the gripping teeth 10 and / or pressing teeth 16, 17, 18, 19, 20, particularly using a pressure of 6 bar and an intensity of 0.16 to 0.17 mmA, to round the edges of the gripping teeth 10 and / or pressing teeth 16, 17, 18, 19, 20; and arching the basic geometry S3 to generate an articulated section 8 and gripping sections 4, 6.
[0059] List of reference numerals
[0060] 2 Surgical clips
[0061] 4, 6 First and second grabbing sections
[0062] 5 and 7 base sections
[0063] 8 articulated sections
[0064] 10 gripping teeth
[0065] 11 spikes
[0066] Ends of circumferential sides 12 and 14
[0067] 16, 17, 18, 19, 20 forming teeth
[0068] 22 through holes
[0069] 24 Extrusion teeth on the hinge section side
[0070] 25 rounded tooth edges
[0071] 26 Endoscopic accessories
[0072] 28 placement rings
[0073] 30 trigger lines
[0074] S1 Stamping, Etching, or Laser Processing Steps
[0075] S2 injection steps
[0076] S3 Arching Steps
Claims
1. A surgical clip (2) comprising a closed ring having a first gripping section (4) and a second gripping section (6) and two elastically deformable hinged sections (8), the first gripping section and the second gripping section each having a base section (5, 7) and a plurality of gripping teeth (10), the gripping teeth being located between two circumferentially adjacent ends (12, 14) of each gripping section (4, 6) and being substantially parallel to each other and extending away from the respective base section (5, 7), the hinged sections being arranged beside the circumferentially adjacent ends (12, 14) of the gripping sections (4, 6), wherein, The hinge section (8) has a bend extending inward toward the ring, such that the circumferential ends (12, 14) of the hinge section (8) and the gripping sections (4, 6) at least partially face each other, thereby creating a gap between the circumferential ends of the hinge section and the gripping sections, characterized in that... At least one of the gripping sections (4, 6), preferably both gripping sections (4, 6), has a plurality of rounded or circular compression teeth (16, 17, 18, 19, 20) extending toward the hinge section (8), such that the gap between the hinge section (8) and the circumferential ends (12, 14) of the gripping sections (4, 6) acquires a wave geometry or is configured to be wave-shaped for compressing tissue.
2. The surgical clip (2) according to claim 1, characterized in that, The plurality of rounded or circular pressing teeth (16, 17, 18, 19, 20) are arranged on the circumferential ends (12, 14) in such a way that a notch is created between every two pressing teeth (16, 17, 18, 19, 20) in the corresponding gripping sections (4, 6), thereby constructing a wave geometry or wave shape of the sequentially arranged pressing teeth (16, 17, 18, 19, 20).
3. The surgical clip (2) according to claim 1 or 2, characterized in that, The two circumferential ends (12) of the first gripping section (4) each have two of the squeeze teeth (16, 17), and / or the two circumferential ends (14) of the second gripping section (6) each have at least one of the squeeze teeth (18, 19, 20).
4. The surgical clip (2) according to any one of the preceding claims, characterized in that, The ends (12, 14) on the circumferential side of the two gripping sections (4, 6) extend completely or almost completely across the entire circumference of the curved articulated section (8).
5. The surgical clip (2) according to any one of the preceding claims, characterized in that, The first gripping section (4) has at least four gripping teeth (10) and the second gripping section (6) has at least five gripping teeth (10).
6. The surgical clip (2) according to any one of the preceding claims, characterized in that, The gripping teeth (10) each have additional tips or spikes (11) at their tips to anchor in the tissue, the tips or spikes being configured as extensions of the tips.
7. The surgical clip (2) according to any one of the preceding claims, characterized in that, The extrusion teeth (16, 17, 18, 19, 20) do not have spikes (11) or angular segments or tips.
8. The surgical clip (2) according to any one of the preceding claims, characterized in that, The elastically deformable hinge section (8) has rounded pressing teeth (24) on the hinge section side, which are configured to complement the pressing teeth (16, 17, 18, 19, 20) at the circumferential ends (12, 14) of the gripping sections (4, 6) to construct the wave geometry or wave shape.
9. The surgical clip (2) according to any one of the preceding claims, characterized in that, The edges (25) of the gripping teeth (10) and / or the squeezing teeth (16, 17, 18, 19, 20) are configured to be rounded for better introduction of the surgical clip (2) into the patient's body opening.
10. The surgical clip (2) according to claim 9, characterized in that, The rounded edges (25) of the gripping teeth (10) and / or the squeezing teeth (16, 17, 18, 19, 20) are made by spraying particles, especially balls, preferably balls made of ceramic, onto the gripping teeth (10) and / or the squeezing teeth (16, 17, 18, 19, 20) of the surgical clip (2), and by simultaneously rounding the edges (25) of the gripping teeth (10) and / or the squeezing teeth (16, 17, 18, 19, 20) at the tips or ends of the gripping teeth and / or the squeezing teeth.
11. The surgical clip (2) according to claim 9 or 10, characterized in that, The rounded tooth edges (25) of the gripping teeth (10) and / or the squeezing teeth (16, 17, 18, 19, 20) have a rounding radius of 0.05 mm to 0.40 mm, preferably 0.10 mm to 0.30 mm, and particularly preferably 0.10 mm to 0.20 mm.
12. The surgical clip (2) according to any one of the preceding claims, characterized in that, The surgical clamp (2) is arched so that the gripping sections (4, 6) have a basic arc-shaped bend that extends along the gripping teeth (10).
13. The surgical clip (2) according to any one of the preceding claims, characterized in that, The gripping teeth (10) of the gripping sections (4, 6) are constructed and arranged such that, in the closed state of the surgical clip (2), the gripping teeth (10) of each gripping section (4, 6) are alternately or alternately opposed.
14. The surgical clip (2) according to any one of the preceding claims, characterized in that, The surgical clip (2) is integrally manufactured from a flexible sheet material.
15. A system for applying a surgical clip (2) according to any one of claims 1 to 14 to a location in a patient's body cavity to compress body tissue, comprising: Endoscope cap (26), on which the surgical clip (2) is arranged. as well as Application device (28, 30), which is configured and set to apply the surgical clip (2) to the body tissue.
Citation Information
Patent Citations
Surgical clip
EP2449983B1