71 results about "Ligation clip" patented technology

The invention discloses a manufacturing method of a ligation clip and the ligation clip, the ligation clip comprises a V-shaped ligation clip body, the ligation clip body is made of a high polymer material, the ligation clip body is provided with a first clip arm, a second clip arm and an elastic connecting part, the end part of the first clip arm is provided with a lock hook, and the end part of the second clip arm is provided with a lock catch; the ligature clip further comprises metal wires arranged in the first clip arm, the second clip arm and the elastic connecting portion, a plurality of grooves are formed in the outer surfaces of the metal wires, the ligature clip body wraps the metal wires through an injection molding process, and anchoring portions extending into the grooves are arranged in the ligature clip body. According to the ligation clamp, a rigid-flexible composite implementation mechanism is adopted, the metal wire serves as a rigid core, the ligation clamp body made of a high polymer material serves as a flexible base body, in addition, mutual movement of the ligation clamp body and the metal wire is effectively prevented through combination of the groove and the anchoring part, the mechanical property bottleneck of a traditional single-material ligation clamp is broken through, and the durability of the ligation clamp is improved.

A ligature clip assembly and a clip applier, the ligature clip assembly including a plurality of ligature clips, each of the plurality of ligature clips including a first beam, a second beam, and an elastic connection connecting the first beam and the second beam, the elastic connection configured to allow the first beam and the second beam to have an open state and a closed state by elastic deformation, the plurality of ligation clips comprise a first ligation clip and a second ligation clip which are adjacent to each other, and the first ligation clip and the second ligation clip are connected through a connecting piece. Therefore, the first ligature clip and the second ligature clip which are adjacent can keep a certain distance and dragging force in the pushing process, so that the ligature clips are prevented from falling off in the closing process, and the problems that the ligature clips are blocked in the continuous conveying process and the like are solved.

This utility model relates to a stable ligation clip, including an upper clamping arm, a lower clamping arm, and a hinge. The rear ends of the upper and lower clamping arms are hinged together, and the front of both the upper and lower clamping arms is provided with a positioning post for cooperating with the clamping forceps. The front ends of the upper and lower clamping arms are also provided with a locking structure that cooperates with each other. The clamping surfaces of the upper and lower clamping arms are provided with several anti-slip textures. The rear side of the hinge is provided with a first structure to improve stable contact with the pushing plate of the clamping forceps. The addition of a first structure that can stably contact the pushing plate on the continuous-fire clamping forceps, while retaining the original ligation clip structure design, makes it compatible with both continuous-fire clamping forceps and currently available single-fire clamping forceps. Moreover, the clamping is stable and the operating principle is the same, so doctors do not need to readjust.

The application discloses a clamp removing forceps and a jaw thereof, which is used for untying a ligature clamp, the ligature clamp comprising a first clamp arm and a second clamp arm connected by a rotating hinge, the first clamp arm being provided with a first protruding column, and the second clamp arm being provided with a second protruding column; the jaw comprising an upper jaw blade, a lower jaw blade and a pushing piece, the upper jaw blade and the lower jaw blade being openable and closable, the upper jaw blade and the lower jaw blade being respectively provided with a limiting groove and a limiting table, the limiting groove being used for positioning the first clamp arm and the second clamp arm when the ligature clamp is closed, and the pushing piece being used for pushing the ligature clamp when the ligature clamp is opened and for clamping the first protruding column and the second protruding column into the limiting table of the upper jaw blade and the limiting table of the lower jaw blade respectively. The jaw of the clamp removing forceps is provided with the limiting table and the limiting groove in the jaw blade, and the pushing piece is used for assisting, so that the operation difficulty and the damage risk of the ligature clamp are reduced.

Polymeric ligation clips and a clip applier for applying a polymeric ligation clip to tissue are disclosed herein. More particularly, the polymeric ligation clips include separate first and second beams that can be coupled to each other and are movable from a reduced diameter open position in which minimal strain is placed on the ligation clip to a clamped position and to a clip applier for delivering such a ligation clip to a surgical site.

The utility model relates to a composite ligation clip integration device which comprises an integration box, a placing base used for placing ligation clips is arranged in the integration box, clamping grooves used for clamping the ligation clips are formed in the top face of the placing base, and a plurality of clamping grooves are formed in the length direction of the placing base at intervals. A pressing plate is arranged in the integration box, a containing through groove for containing the placement seat is formed in the middle of the pressing plate in the width direction, elastic pressing pieces are arranged on the inner walls of the two sides of the containing through groove in the width direction, and the elastic pressing pieces on the two sides of the containing through groove in the width direction stretch into the corresponding clamping grooves and are arranged on the cylindrical protrusions of the corresponding ligation clamps in a pressed mode; a placing area I, a placing area II and a placing area III are arranged on the placing seat, a large-size ligature clip is placed in the placing area I, a medium-size ligature clip is placed in the placing area II, and a small-size ligature clip is placed in the placing area III. According to the technical scheme, the ligature clips of three specifications are integrated in the integration box, medical staff can directly take out the ligature clip of any required specification from the integration box conveniently, and operation is convenient and fast.

The utility model relates to a ligation clamp with a double-clamping-arm structure, which comprises a ligation clamp body and an upper clamping arm and a lower clamping arm. The rear ends of the upper clamping arm and the lower clamping arm are hinged, and the front ends are locked by a locking structure; the side walls of the front parts of the upper clamping arm and the lower clamping arm are provided with clip applier grasping columns; a first groove which is concave upwards and extends in the front-back direction is formed in the middle of the clamping face of the upper clamping arm. And a second groove which is sunken downwards and extends in the front-back direction is formed in the middle of the clamping surface of the lower clamping arm. The U-shaped ligature clip has the advantages that the groove structure is additionally arranged on a traditional U-shaped ligature clip structure, an upper clamping arm structure and a lower clamping arm structure are further derived, the clamping closing effect that one-time clamping closing is equal to clamping closing of two ligature clips can be achieved through the upper clamping arm structure and the lower clamping arm structure, the problems of slipping and automatic bouncing after installation and closing are avoided, and the ligature clip is convenient to use. And meanwhile, the operation of secondary clamping closing is omitted.

The utility model discloses an absorbable ligation clamp reliable in clamping and closing, and belongs to the field of medical instruments. The absorbable ligation clamp reliable in clamping and closing comprises a first clamping arm and a second clamping arm, the near ends of the first clamping arm and the second clamping arm are connected through a connecting part, and the far end of the first clamping arm and the far end of the second clamping arm are provided with a locking structure used for closing the ligation clamp and a positioning structure used for being matched with a clip applier respectively. The opposite inner side clamping faces of the first clamping arm and the second clamping arm are arc-shaped convex faces protruding inwards, and the outer side faces, opposite to the corresponding inner side clamping faces, of the first clamping arm and the second clamping arm are arc-shaped convex faces protruding outwards. The outer side surfaces of the clamping arms of the ligation clamp adopt the arc-shaped convex surface design, and the outer sides of the clamping arms are arched outwards, so that the overall structural strength of the clamping arms can be improved, and the closing force of the ligation clamp is improved; the arc-shaped convex surfaces can be in contact with the bottom walls of the accommodating grooves of the forceps head arms in the clamping and closing process to reduce deformation of the clamping arms, so that the problem that the ligation clip cannot be closed due to large deformation of the clamping arms is solved, meanwhile, the percussion force of the clip applier can be improved, the strength of the clamping arms during closing is ensured, ligation of blood vessels and body cavity tissues is more reliable, and the ligation efficiency is improved. And the bleeding and leakage phenomena are avoided.

A surgical ligation clip includes a first jaw, a second jaw, and a hinge portion that pivotably couples the first jaw to the second jaw. The first and second jaws define respective clamping surfaces and include spaced bosses. Each of the spaced bosses include a transverse portion and a head portion that is oversized and has a diameter that is larger than the diameter of the transverse portions. The oversized head portions allow for the ligation clips to be securely supported on a clip applicator.

Provided are an absorbable biomedical polymer material, a ligation clip, and a method for preparing same. The ingredients selected for the absorbable biomedical polymer material consist of a first polymer and a second polymer. The first polymer consists of 50 wt%-100 wt% of poly(L-lactide) and 0 wt%-50 wt% of polyglycolide, and the second polymer is poly(p-dioxanone). The absorbable biomedical polymer material has suitable rigidity and flexibility, and can be used in preparing a medical device, such as a ligation clip. In particular, when containing 2.5 wt%-40 wt% of the first polymer, the ligation clip can readily pierce the fascia, and is less likely to undergo plastic deformation at a bend. Also disclosed are some structural forms of ligation clips and a method for preparing same.

An intraoperative clamp loading device includes an elongated body that can be positioned at the surgical site via a cannula during endoscopic surgery to supply a ligation clamp to a clamp applicator. The elongated body includes structures for supporting and advancing the ligation clamp within the elongated body.

The utility model relates to an electric continuous ligation clip applier, a main body of the electric continuous ligation clip applier is a continuous ligation clip applier, the continuous ligation clip applier is divided into a clip applying part and a percussion part, and the percussion part controls a push rod in the clip applying part to move back and forth so as to realize the actions of clamping, slightly closing a forceps head and closing the forceps head; the cutting assembly comprises a cutter, an electromagnetic valve, a main control board, a power supply and a cutting button; the main control board and the power supply are arranged in the percussion part and are electrically connected with each other; the cutting button is mounted on the outer side wall of the percussion part and is electrically connected with the main control board; the electromagnetic valve is arranged on the inner wall surface of the front end of the sleeve of the clamping applying part and is electrically connected with the main control board; and the cutter is connected with the electromagnetic valve and is arranged on the side edge of the clamp head of the clamp applying part. According to the continuous ligation clip applier, the tool bit which is independently controlled is arranged on the continuous ligation clip applier in a matched mode, continuous ligation, clip applying and cutting can be integrated, operation efficiency is improved, and operation time is shortened.

The present invention relates to an absorbable human duct tissue ligation clamp, which is made of biodegradable material and includes a V-shaped buckle arm and a closing arm. The front end of the buckle arm is provided with a puncture head, and the puncture head is provided with a buckle hook. The closing arm is provided with a buckle tongue that matches the buckle hook to achieve the fixation of the buckle arm and the closing arm. The outer sides of the front ends of the buckle arm and the closing arm are respectively provided with fixed columns. The outer sides of the buckle arm are provided with a first pulling column, and the outer sides of the closing arm are provided with a second pulling column. During the closing process of the ligation clamp, the first pulling column and the second pulling column can respectively pull and drive the corresponding fixed column to quickly fall off from the clamp applier, thereby achieving the falling off of the ligation clamp in the clamp applier. The ligation clamp of the present invention has a simple structure, a compact design, and is easy to use. The locking structure of the buckle hook and the buckle tongue improves the stability of the ligation clamp after closing. During the closing process, the pulling column pulls the fixed column to separate the ligation clamp from the clamp applier, and smoothly completes the clamping action.

The application provides a ligature clip and a clip storage device, wherein a proximal part of a closed tail of the ligature clip is provided with a socket rearward for a push clip head insertion slot, and the insertion slot is located at a middle part of the closed tail in a vertical direction; the insertion slot comprises a first guide slot and a first insertion slot which are sequentially communicated from proximal to distal, the first guide slot has oppositely arranged first and second slot openings, the first guide slot is communicated with the first insertion slot through the second slot opening, the size of the first slot opening in the vertical direction is greater than the size of the second slot opening in the vertical direction, the first insertion slot has a slot bottom and oppositely arranged first and second slot walls, the first slot wall is used for abutting an upper surface of the push clip head, the second slot wall is used for abutting a lower surface of the push clip head, and the slot bottom is used for abutting the push clip head to make the clip sending more stable.

The invention discloses a ligation device and a using method thereof, and relates to the technical field of medical instruments, the ligation device comprises a double-layer absorbable ligation clip and a clip applier, the double-layer absorbable ligation clip comprises an outer sleeve, a piston, an inner-layer clip and an outer-layer clip, the front end of the outer sleeve is provided with a V-shaped opening part, the V-shaped opening part is elastic, so that the V-shaped opening part can be folded and unfolded, and the clip applier is arranged in the outer sleeve. The inner-layer clamp, the outer-layer clamp and the piston are sequentially arranged in the outer sleeve from front to back, and when the piston pushes the outer-layer clamp forwards, the outer-layer clamp can enable the inner-layer clamp to be closed; the clip applier comprises a fixing mechanism, an excitation mechanism, an outer pipe, an inner pipe, an elastic component limiting pile, a pushing mechanism, an ejection mechanism, a first elastic reset component and a second elastic reset component. According to the ligation device and the using method thereof, the tubular tissue with the pipe diameter of 3-10 mm can be closed efficiently, conveniently, safely and reliably without adopting a puncture cannula with a larger pipe diameter, so that the double-layer absorbable ligation clamp can reach a larger pipe diameter closing range.

The application discloses a ligature clamp, and relates to the technical field of medical devices, which comprises a first clamp arm and a second clamp arm, the length direction of both of which is respectively provided with an elastic connecting part and a locking unit at both ends; the opposite inner sides of the first clamp arm and the second clamp arm form a clamping surface for clamping a ligature tissue; the clamping surface is sequentially provided with an anti-falling locking area, a gradual transition area and a pressure reduction buffer area along the transverse width direction, the contact proportion of the surface microstructure of each area to the ligature tissue sequentially decreases, so that the ligature tissue is sequentially weakened in stress and is limited and clamped; the ligature clamp can realize gradual clamping, reduces local high pressure concentration while ensuring the stability of the ligature, and reduces the risk of excessive compression on blood vessels or soft tissues; and the technical problem that the existing ligature clamp lacks a gradual clamping process and excessive compression on blood vessels or soft tissues due to local high pressure concentration exists in the clamping process is solved.

The application belongs to the technical field of medical devices, and particularly relates to a distributed feeding mechanism applied to a continuous clip applier. The application comprises a continuous clip applier main body, the continuous clip applier main body is provided with a pipe rod barrel, the pipe rod barrel is provided with a ligature clip conveying element and a distributed feeding type clamp head assembly. In the natural state during use, the distributed feeding type clamp head assembly is in a semi-closed state, the natural state of the clamp head in the structural design is semi-closed, the opening of the clamp head during loading is opened by the ligature clip, the clamp head and the ligature clip always maintain contact during the opening process, and the mechanism for driving the clamp head to close does not retreat again during one clip application process, does not have additional system impact, is reasonable in structure, and is relatively strong in practicality.

A ligation clip loading device includes a cannula including a cannula body and an instrument lumen extending through a longitudinal axis of the cannula body, and a stack of ligation clips axially arranged about the instrument lumen. The ligation clips are accessible through a series of slots allowing for loading of an endoscopic clip applier with the ligation clips within a body cavity, such as an intra-abdominal cavity.

The utility model discloses a clip applier. The clip applier comprises a tube body assembly, a jaw assembly and a handle assembly, the tube body assembly is provided with a near end and a far end and comprises an inner tube assembly, an outer tube assembly arranged on the outer side of the inner tube assembly in a sleeving mode and a feeding assembly located in the inner tube assembly, and the feeding assembly contains a ligation clip; the jaw assembly is connected to the far end of the tube body assembly; the handle assembly is connected to the near end of the tube body assembly and comprises a feeding handle, and the feeding handle is configured to control the outer tube assembly and at least part of the feeding assembly to move in the axial direction of the tube body assembly so as to control the feeding assembly to convey the ligation clips to the jaw assembly and / or control the jaw assembly to be in a semi-closed state or an open state. The clip applier is simple to operate, easy to control and safer to use.

The invention relates to the technical field of structural optimization of medical instruments, in particular to a design method and system for increasing the size of the inner side wall of a through area at the connecting position of clamping arms of a ligature clip, and the method comprises the steps: extracting the elastic rebound speed of the ligature clip when the ligature clip is released from a clip bin under the set ligature clip structural size according to a shooting result of high-speed shooting; the structure size, the material parameters and the elastic rebound speed of the ligature clip serve as input, the maximum thickening amount and the position of the inner side wall of the ligature clip and two kinds of outer side wall stress generated when the clip arms are opened to the maximum angle and contained in the clip bin are output through the prediction model; and generating a thickness gradient change scheme of the inner side wall from the position of the inner side wall to the free ends of the two clamping arms by adopting a self-adaptive topological optimization algorithm in three-dimensional model software. According to the invention, the problem that the thickness adjustment of the inner side wall at the joint of the clamping arms of the ligature clamp is uncontrollable is effectively solved, the dynamic performance, the structural strength and the clinical operability of the ligature clamp are collaboratively optimized, and the accurate adjustment of the thickness of the inner side wall at the joint of the clamping arms of the ligature clamp is realized.

The invention discloses an anti-falling absorbable ligation clip which comprises an inner clip (1) and an outer clip (2), the inner clip (1) is provided with two inner clip arms (11) capable of being pressed and closed, the outer clip (2) is provided with two outer clip arms (21) for pressing and closing the inner clip arms (11) of the inner clip (1), a closed sleeve (13) is arranged on the outer sides of the two inner clip arms (11) of the inner clip (1), and the inner clip arms (11) of the inner clip (1) are sleeved with the outer sleeve (13). When the outer clamping arm (21) presses and closes the inner clamping arm (11), the outer clamping arm (21) of the outer clamp (2) is arranged in the sleeve (13) in a penetrating mode and slides. According to the sleeve structure, slipping between the inner clamp and the outer clamp can be thoroughly avoided, and therefore the problem that in the prior art, buckling of the inner clamp and the outer clamp fails is thoroughly avoided. Besides, burrs are further arranged on the inner clamp, and when force operation is carried out, even if shaking occurs, the burrs can generate certain blocking force on the tissue, so that the technical requirements of personnel are reduced, and the operation precision is improved.

Disclosed herein are polymer ligature clip pincers and applier for applying polymer ligature clip pincers to tissue. More particularly, the polymer ligature clip pincers include first and second beams that are spaced apart, which can be coupled to one another and movable from an open position of reduced diameter that exerts minimal strain on the ligature clip pincers to a clamped position and to an applier for delivering such ligature clip pincers to a surgical site.

A surgical ligation clip includes a first arm extending from a proximal end to a first distal end. The first arm includes a distal hook at the first distal end. The surgical ligation clip also includes a second arm extending from the proximal end to a second distal end. The second arm is pivotable relative to the first arm about a proximal hinge to clamp tissue between the first and second arms. The second arm includes a proximal portion and a distal portion. The distal portion is pivotable relative to the proximal portion about a distal hinge.

The utility model discloses a clip applier with a transmission mechanism, which comprises a clip head assembly and a device body assembly, the near end of the clip head assembly is connected with the far end of the device body assembly, the clip head assembly comprises a clip head and an outer tube, the outer tube is sleeved on a ligature clip, and the device body assembly comprises an instrument shell, a trigger, the transmission mechanism, a push-pull rod and a reset spring; the trigger is pulled towards the near end, the drive transmission mechanism pushes the push-pull rod to compress the reset spring and enable the push-pull rod to slide towards the far end, and therefore the ligation clamp is controlled to be closed. The trigger is pushed towards the far end, the transmission mechanism is driven to pull the push-pull rod to slide towards the near end, meanwhile, the reset spring is reset, and therefore the ligation clamp is controlled to be opened. The utility model has the advantages of simple structure, good effect, low cost and easiness in process realization.

A continuous clip applier comprises a tube body assembly and a feeding assembly. The feeding assembly is located in the pipe body assembly and comprises a fixing part and a pushing part which are oppositely arranged in the radial direction of the pipe body assembly, the pushing part comprises a first base and a plurality of first limiting structures which are arranged in the axial direction of the pipe body assembly, and the fixing part comprises a second base and a plurality of second limiting structures which are arranged in the axial direction of the pipe body assembly; the plurality of second limiting structures are arranged along the axial direction; the multiple first limiting structures are arranged on the side, facing the fixing part, of the first base, the multiple second limiting structures are arranged on the side, facing the pushing part, of the second base, a gap is formed between the fixing part and the pushing part and is configured to contain a ligation clip, and the multiple first limiting structures and the multiple second limiting structures are configured to limit the ligation clip; the pushing part is configured to be controlled to move relative to the fixing part, and the first base of the pushing part and the multiple first limiting structures are rigid structures. The feeding assembly of the continuous clip applier can continuously and reliably convey the ligation clips.

A litigation clip (10) includes a hinge portion (300) having a flexible insert assembly (400) embedded in a body portion of the hinge portion (300). The flexible insert assembly (400) includes inserts (402, 404, 406) that are formed of a material that is more flexible than a material forming the body portion of the hinge portion (300). In this manner, plastic deformation in the hinge portion (300) of the ligation clip (10) is reduced or eliminated.

The invention discloses a clip applier. The clip applier comprises a tube body assembly, a jaw assembly and a handle assembly, the tube body assembly is provided with a near end and a far end and comprises an inner tube assembly, an outer tube assembly arranged on the outer side of the inner tube assembly in a sleeving mode and a feeding assembly located in the inner tube assembly, and the feeding assembly contains a ligation clip; the jaw assembly is connected to the far end of the tube body assembly; the handle assembly is connected to the near end of the tube body assembly and comprises a feeding handle, and the feeding handle is configured to control the outer tube assembly and at least part of the feeding assembly to move in the axial direction of the tube body assembly so as to control the feeding assembly to convey the ligation clips to the jaw assembly and / or control the jaw assembly to be in a semi-closed state or an open state. The clip applier is simple to operate, easy to control and safer to use.

The utility model provides a clamp head of a clip applier, and relates to the technical field of medical instruments. The forceps head of the clip applier comprises an upper forceps head and a lower forceps head, a connecting part connected with a handle pull rod of the clip applier is arranged at the common end of the upper clip head and the lower clip head; a clamping opening for clamping a ligature clip is formed between the upper forceps head and the lower forceps head; the upper clamp head and the lower clamp head are respectively provided with opposite side walls and a bottom wall connected between the side walls; a clamping groove is formed in the bottom wall of the upper clamp head and / or the bottom wall of the lower clamp head; when a clamping groove is formed in the bottom wall of the upper clamp head, the clamping groove penetrates through the outer side of the bottom wall from the inner side of the bottom wall of the upper clamp head; when the clamping groove is formed in the bottom wall of the lower clamp head, the clamping groove penetrates through the outer side of the bottom wall from the inner side of the bottom wall of the lower clamp head. The clamping grooves are formed in the clamping openings of the forceps heads, so that the ligature clips are clamped into the clamping grooves in the clamping process, and the problem that the ligature clips are unstable in clamping due to interference between the ligature clips and the inner side walls of the forceps heads is solved.

A ligation clip applier includes first and second jaw members and an elongated shaft assembly secured thereto. The elongated shaft assembly includes a tube supporting clips therein and a tab assembly supported within the tube and including angled tabs engaged with the clips for moving the clips through the tube in response to movement of the tab assembly relative to the tube. The tab assembly is positionable to load a distal-most clip into the end effector when the tab assembly moves relative to the tube. The tube is selectively engageable with an outer surface of the first and second jaw members to clamp the distal-most clip between the first and second jaw members.