468 results about "Surgical suture" patented technology

The invention discloses an absorbable suture line for surgical suture and a preparation method thereof, and relates to the technical field of medical materials. The absorbable suture line for surgical suture is prepared from the following raw materials in parts by weight: 50 to 65 parts of polylactic acid, 15 to 20 parts of polyglycolic acid, 3 to 5 parts of sodium carboxymethyl cellulose, 3 to 8 parts of a toughening agent, 3 to 6 parts of an antibacterial agent, 0.3 to 0.8 part of a lubricating agent, 1 to 2 parts of sodium hyaluronate and 5 to 10 parts of polyvinyl alcohol. The toughening agent is obtained by reacting hydroxyethyl acrylate with ethylenediamine to generate a four-arm compound and then reacting with 6-caprolactone and DL-lactide. The absorbable suture line for surgical suture prepared by the invention has excellent tensile property and antibacterial property, and can meet the application requirements of clinical medical treatment.

The invention relates to a system and method for preparing a surgical suture with controllable knotting force based on a slipknot, and the method comprises the steps: weaving a slipknot controller with a specific topological structure at the tail end of the surgical suture, inputting the required knotting force into a preset force calculation system based on a finite element algorithm, and carrying out the calculation to obtain a preset force; the force control stretching device loads the preset force to the prefabricated force bearing end of the slipknot controller until the slipknot controller reaches the preset load, and preparation of the operation suture with the controllable knotting force is completed. The knotting force can be accurately controlled in the actual suture knotting operation, and tissue cutting and ischemia caused by too large knotting force and tissue leakage caused by too small knotting force are avoided. In the suturing process, clear mechanical signals can be provided for surgeons, the consistency and accuracy of knotting operation are improved, and low-age doctors can complete high-quality knotting.

The utility model discloses a measurable surgical suture needle storage box which comprises a box body with an opening at one end, the box body is provided with a needle seat extending along the width direction of the box body and used for arranging and fixing a plurality of surgical needles along the width direction of the box body, and a suture fixing area positioned on one side of the needle seat, length scale marks which extend in the length direction of the box body and can display scales and a plurality of suture line fixing pieces which can correspond to the scales on the length scale marks are arranged on the suture line fixing area, the suture line fixing pieces are arranged in a plurality of rows, and fixing parts are arranged on the suture line fixing pieces; during use, one end of a surgical needle is fixed on the needle seat, and the tail end of a suture line is clamped on the fixing part. When the surgical needles of various models and specifications are fixed on the needle seat, suture lines on the surgical needles can be fixed on the corresponding suture line fixing pieces one by one according to different lengths, the surgical needles and the suture lines are arranged in order, appropriate needles and sutures can be conveniently taken according to length scale marks, convenience is provided for an operation, and the operation is facilitated.

The invention relates to a degradable surgical suture capable of self-constricting under the driving of near-infrared light and accelerating wound healing as well as a preparation method and application of the degradable surgical suture, and the degradable surgical suture capable of self-constricting under the driving of the near-infrared light is developed by virtue of a photo-thermal conversion effect of polydopamine on the basis of a thermal response characteristic of a shape memory material. And on the basis, a thermal control drug release system is endowed to the suture line to synergistically accelerate the wound healing process, and various suture problems confronted by the internal wound of the body are solved.

The invention relates to a bioelectronic surgical suture for suture tension monitoring, the surgical suture comprises a cannula and a conductive material, the cannula is a hollow capillary tube, and the conductive material is arranged in the cannula through perfusion and is subjected to first laser scanning treatment after perfusion; a micro-nano structure is manufactured on the outer wall of the sleeve through second laser scanning. According to the principle of friction nanometer power generation, the tension of the surgical suture causes the change of the contact area between the suture and tissue and the change of an output electric signal in the collection process, the tension of the surgical suture can be reversely deduced, and the purpose of monitoring the surgical suture tension is achieved. The operation line is a self-powered sensor, and an external power supply is not needed. The operation line can provide different quantitative feedbacks according to different suturing modes and suturing parts, and is combined with clinical suturing experience of doctors to assist in establishing a tension quantitative model, so that the doctors are helped to optimize operation procedures, postoperative complications are reduced, and wound healing is promoted.

A surgical suture holder is adapted to be disposed on an opening of a tubular snaring object, is adapted for holding at least one surgical suture, extends along a holder axis, and includes an insertion section and a holding section. The insertion section is adapted to be inserted into the opening of the tubular snaring object and being tapered toward the tubular snaring object. The holding section has a holding board that has a periphery surrounding the holder axis, and at least one holding slot that is recessed from the periphery of the holding board, that extends through the holding board in an extending direction of the holder axis, and that is adapted for the at least one surgical suture to fit thereinto so that the holding slot holds the at least one surgical suture.

The utility model relates to a surgical stapling instrument. The surgical suturing instrument comprises a driving gear, a driven gear, a return gear and a one-way control piece, wherein the driven gear is provided with a meshing position and a disengagement position which move in the axial direction of the driving gear. When the driven gear is in the meshing position, the one-way control piece is far away from the rack, and the driving gear is meshed with the rack through the driven gear to drive the rack to advance or retreat; when the driven gear is in the separation position, the one-way control piece is used for being connected with the rack, the driven gear is separated from the rack, and the retreating gear is meshed with the rack to drive the rack to retreat. When the motor breaks down, firstly, the driven gear is made to move from the meshing position to the disengaging position, then the return gear is manually rotated, under the action of the one-way control piece, the return gear can drive the rack to return, the jaw is opened to release tissue, and on the other hand, the tong head needs to drive the blade to retract.

The invention belongs to the technical field of medical instruments, and particularly relates to a thread hooking device for extraocular surgery, which comprises a handle, a support plate fixedly mounted on the handle, a connector fixedly mounted at one end of the support plate, a limiting block fixedly mounted on the connector, a sliding groove formed in the connector and a pressure block arranged on the connector. A through groove is formed in the supporting plate, a movable groove is formed in the handle, a winding wheel is arranged in the movable groove, the through groove communicates with the movable groove, and the winding wheel is fixedly connected with a traction rope. According to the thread hooking device for the extraocular surgery, due to the arrangement of the limiting hole and the pressing block, a surgical suture can be well limited, the surgical efficiency is improved, the winding wheel is rotated to drive the pressing block to move, and when the winding wheel does not wind the traction rope any more, the reset spring is reset; the connecting block is pushed to drive the pressure applying block to synchronously move to limit and clamp the suture, so that the stability of the surgical suture is improved, the surgical suture is prevented from accidentally falling off, and the surgical efficiency is improved.

A pair of needle holding forceps for surgical suture comprises a left forceps body and a right forceps body which are provided with forceps beaks and forceps handles, the left forceps body and the right forceps body are hinged to form the needle holding forceps capable of being opened or closed, the opposite faces of the forceps beaks of the left forceps body and the right forceps body are respectively provided with an open through groove, groove openings of the two open through grooves are opposite, and the distance between the open through grooves and the front ends of the forceps beaks is 6-8 mm. The distance is the clamping surface of the forceps beak, blades used for cutting a suture line are installed in the open through grooves respectively, the cutting edge parts of the blades are opposite and extend in the longitudinal direction of the forceps beak, and the cutting edge part of at least one blade protrudes out of the clamping surface of the forceps beak, so that the two blades form scissors used for cutting off the suture line, and the needle forceps integrating sewing and cutting are formed.

A surgical suture of a synthetic fiber is provided. The suture includes a non-circular cross-section, and may further include maximal and minimal cross-sectional dimensions with the minimal cross-sectional dimension. The suture may further include a compressible width that supports knot formation and retention, and planar side surfaces that guide knot formation and curvatures. The suture may also include a series of microfilaments that define larger monofilaments or formations that are twisted or braided along the length of the suture.

The invention discloses a surgical suture sample detection method, system, storage medium and device, and the method comprises the steps: obtaining a shot image of a suture sample, the shot image comprising a front image and a back image; after the shot image is preprocessed, a region of interest is extracted, and the region of interest corresponds to a binary suture region image; edge optimization is carried out on the region of interest, and defect detection is carried out on the optimized binary suture region image; and extracting a defect detection result, calculating a qualified rate to output a detection report, and binding the defect detection result with the current suture sample number for filing. Through double-camera design, the transparent conveyor belt and an optimized image processing algorithm, the problems of low detection efficiency, single-angle detection and insufficient data retention in the prior art are solved, and high-efficiency, comprehensive and real-time surgical suture quality detection is realized.

The needle-holding stitching instrument comprises a forceps head assembly at the front end of a shaft tube and a shell at the tail end of the shaft tube, the forceps head assembly comprises forceps claws which can be opened or closed mutually, and roller assemblies capable of clamping the stitching needle are arranged in the forceps claws. The idler wheel assembly is in transmission with the bevel gear assembly in the shell through the transmission assembly, so that the idler wheel assembly rotates forwards or reversely, meanwhile, the bevel gear assembly is driven by the ratchet wheel assembly in a one-way mode, and the ratchet wheel assembly is controlled by the rotating handle in the shell, so that when the rotating handle is pressed, the ratchet wheel assembly can be in one-way transmission to the bevel gear assembly; when the rotating handle is reset, the ratchet wheel assembly does not transmit, the stitching instrument can achieve continuous advancing or retreating of the stitching needle, and the operation burden of a doctor during surgical stitching can be relieved.

The invention discloses a suture removing auxiliary device for cardiac surgery, and belongs to the technical field of surgical suture removing, the suture removing auxiliary device comprises a fixing device, a suture cutting device and a suture pulling device are arranged on the fixing device, the suture cutting device is used for cutting a suture on the skin, and the suture pulling device is used for pulling the cut suture out of the skin. The fixing device is used for adjusting the positions of the thread trimming device and the thread pulling device; the fixing device can adjust the positions of the thread trimming device and the thread pulling device in the X direction, the Y direction and the Z direction, the thread trimming device and the thread pulling device can reach the surgical site where a thread needs to be removed, and the fixing base is installed on a sickbed and is convenient to use. When the thread cutting device moves, the movable knife and the fixed knife are continuously opened and closed to cut off the surgical thread on the skin, the thread pulling claw is driven to continuously pull out the cut surgical thread when the thread cutting device moves, the whole action is conducted continuously, the automation degree is high, and continuity is good.

The utility model discloses a preparation device of a high-orientation-degree electrostatic spinning nanofiber absorbable surgical suture, which comprises a spinning device provided with a liquid supply box, a high-voltage power supply and an electrostatic spinning nozzle. The electrostatic spinning device is characterized in that two conductive conveying belts which move oppositely and are used for adhering and fixing nanofibers formed by spraying trickles and driving the nanofibers to move downwards are vertically arranged below the electrostatic spinning nozzle in parallel, and a receiving area used for adhering the nanofibers which are consistent or similar in arrangement direction is formed between the two conductive conveying belts; a whipping area is formed between the electrostatic spinning nozzle and the tops of the conductive conveying belts, and a collecting plate used for intercepting nanofibers adhered and fixed between the two conductive conveying belts and flatly laying, accumulating and stacking the nanofibers to form oriented nanofiber bundles is arranged at the bottom of the receiving area. The nanofibers are arranged in the yarn in an ordered height orientation manner, and the mechanical property and the overall structural stability can be greatly improved under the condition of the same specification of yarn diameter.

The embodiments of this specification provide a drive structure for a surgical stapling instrument and a surgical stapling instrument. The drive structure is disposed in a handle housing of the surgical stapling instrument and includes: a trigger rotatably disposed on the handle housing; a rack slidably disposed on the handle housing; a mode switching mechanism including a latch movably connected to the rack, a drive pawl movably connected to the trigger, and an operating button, the operating button being pressably disposed on the trigger and movable between an initial position and a depressed position. When the operating button is pressed and moves from the initial position to the depressed position, the operating button drives the drive pawl to switch from a first state to a second state. In the first state, the drive pawl engages with the latch, and the latch is restricted within a preset travel range. In the second state, the latch is disengaged from the drive pawl.

The invention discloses barb suture production equipment, and relates to the technical field of surgical suture production. The equipment comprises a feeding mechanism, at least two clamping and rotating mechanisms, a suture cutting mechanism and a barb cutting mechanism. The feeding mechanism conveys a surgical suture, the surgical suture passes through the suture cutting-off mechanism and then is conveyed to the clamping and rotating mechanisms, so that the two ends of the surgical suture are clamped by the different clamping and rotating mechanisms respectively, and the surgical suture is kept in a tightened state. At the moment, the suture cutting-off mechanism cuts off the surgical suture located between the feeding mechanism and the clamping and rotating mechanism. The barb cutting mechanism is used for conducting barb cutting operation on the surgical suture to form barbs on the surgical suture, and after the barbs are formed on one side of the surgical suture, the clamping and rotating mechanism rotates the surgical suture so that the barb cutting mechanism can conveniently form barbs on the other side of the surgical suture. In this way, barbs can be formed on the two sides of the surgical suture respectively only through one barb cutting mechanism, and the production cost can be reduced.

The invention relates to the technical field of peripheral nerve injury suture, and particularly discloses a radio stimulation surgical suture for promoting peripheral nerve healing and a preparation method and application thereof, the radio stimulation surgical suture comprises a Mo core layer and a PLGA coating; the preparation method of the radio stimulation operation suture comprises the following steps: preparing a core layer by using metal Mo, spraying out a PLGA spinning solution through a spinning nozzle, curing in a coagulating bath to form a film, and forming a uniformly coated PLGA coating on the Mo core layer through a wet spinning technology to obtain the radio stimulation operation suture for promoting peripheral nerve healing, according to the prepared radio stimulation surgical suture, energy is obtained from an external electromagnetic field in an electromagnetic induction and capacitance coupling mode, and a stable electric field is formed on the suture and the local part of a wound, so that the electric field acts on damaged tissue. The suture can promote neuronal axon growth, Schwann cell migration and the like, and the nerve tissue regeneration efficiency is improved.

Suture materials for producing medical devices are provided. The suture materials can include natural fibers, and can be suitable for making multifilament sutures and surgical meshes comprising multifilament sutures as examples of medical devices. The multifilament suture can include a plurality of filaments combined together according to a twined pattern, and at least one filament of the plurality of filaments can include natural fibers, synthetic fibers, or mineral-based fibers. A suture device can include the multifilament suture combined with a suture needle. The multifilament suture can be coated with a biocompatible coating, such as a bioactive agent, and / or include a first set of filaments that includes natural fibers and a second set of filaments that includes natural fibers that are different from the natural fibers of the first set of filaments, synthetic fibers or mineral-based fibers, for instance.

The utility model discloses a non-absorbable surgical suture winding device which comprises a winding device assembly, a through groove communicated with the interior is formed in the outer wall of the winding device assembly, and a cutting assembly is arranged in the through groove. Limiting clamping blocks capable of keeping sliding are symmetrically arranged in the sliding groove so as to clamp a suture, and the friction force between the ends, connected with the sliding groove, of the limiting clamping blocks is smaller than the friction force between the limiting clamping blocks and the suture. According to the non-absorbable surgical suture winding device, when the suture is dragged out by a large force and is dragged out too much, the limiting clamping block can slide in the sliding groove in the direction of the check block due to the fact that friction force at the two ends of the limiting clamping block is different, and after cutting of the external suture is completed, the limiting clamping block can slide in the sliding groove in the direction of the check block. And the winding shaft rotates and resets through the torsion spring, the limiting clamping block slides and resets, and the protruding part of the sewing thread retracts into the through groove and is prevented from being completely exposed outside, so that the sewing thread is prevented from being polluted.

The application discloses a knotting device and a blood vessel ligator. The knotting device comprises a gun body provided with a knotting groove and a knotting mechanism arranged in the knotting groove. The knotting mechanism comprises a spiral spring and an abutting piece abutting against the spring body of the spiral spring. The spiral spring has a hooking and pulling end and an extending end. The extending end is used for controlling the movement of the spring body of the spiral spring. The abutting piece is used for making the spring body of the spiral spring deform and stretch in the movement, so that the spring body of the spiral spring rotates. In the process of the rotation of the spring body of the spiral spring, the thread of the surgical suture hooked by the hooking and pulling end rotates around the surgical suture passing through the spring body of the spiral spring, so that the surgical suture forms a surgical knot. The blood vessel ligator comprises the knotting device. In the blood vessel ligator, the surgical suture can quickly form the surgical knot and the blood vessel can be tightly clamped by only operating the traction piece to pull the extending end of the spiral spring.

The needle and thread integrated thread embedding device comprises a needle handle, a needle rod, a thread locking ring and absorbable surgical sutures, the top end of the needle rod is connected with the needle handle, and the bottom end of the needle rod penetrates through the thread locking ring along a rod hole and is provided with a blade part with an inclined face. One end of the absorbable surgical suture extends into the rod hole of the needle rod from the blade part, and the other end of the absorbable surgical suture penetrates through the suture locking ring along the suture groove after being bent, so that the use is convenient, and the absorbable surgical suture is not easy to take out when the needle is withdrawn.

The utility model belongs to the technical field of medical instruments. The utility model discloses an integrated surgical suture special for cervix uteri. The integrated surgical suture comprises a needle tip and a needle body connected with the needle tip. The needle body is in a concave arc shape, and a needle holding body which is smoothly connected with the needle body and arranged in a convex arc shape so as to stagger the suture needle moving angle, expand the visual field and facilitate suture operation in a narrow space is arranged at the end, away from the needle tip, of the needle body. And an absorbable suture for suturing a cervical wound is arranged at one end, far away from the needle body, of the needle holding body. The cervical suture and knotting device has the advantages that suture and knotting of a cervical wound can be safely, reliably and quickly completed, and the operation time is effectively shortened.

The invention provides a surgical suture line with barbs and a preparation method thereof, and relates to the field of surgery and medical cosmetology, the preparation method of the surgical suture line with barbs comprises the following steps: S1, stamping on a suture line base material to form a plurality of barbs to obtain a suture line base material with barbs; s2, the suture line base material with the barbs is fed into a heated bending and shaping mold, and after cooling and curing, the surgical suture line with the barbs is obtained. According to the surgical suture line with the barbs and the preparation method of the surgical suture line, the barbs are formed on the suture line base material in a stamping mode firstly, then the base material with the barbs is heated, bent and shaped, the three-dimensional suture line with the barbs is integrally formed, cutting stress concentration is fundamentally eliminated, and the surgical suture line with the barbs and the preparation method of the surgical suture line with the barbs are obtained. And the mechanical interlocking effect generated by the three-dimensional configuration is combined, so that the connection reliability of the barb and the body of the suture line is remarkably improved.

The utility model discloses a pediatric surgery suture needle management auxiliary device which comprises a box body, a plurality of containing grooves are vertically formed in the top of the box body, a push-out assembly is arranged in each containing groove, a limiting assembly is arranged on a lifting body, and the pediatric surgery suture needle management auxiliary device is provided with a rectangular hole, a round rod, a rubber ball body and a needle inserting hole. When the operation suture needles in the needle inserting holes in the lifting body need to be taken, the rubber ball body is pushed to drive the round rod to move upwards, the round rod drives the lifting body to move upwards in the containing groove, at the moment, the operation suture needles inserted into the lifting body are in a row, and at the moment, the operation suture needles can be conveniently and rapidly taken out of the needle inserting holes; and the situation that the surgical suture needles are gathered together and cannot be quickly taken is prevented.

The invention provides an on-demand stripping hydrogel with high biological wet tissue adhesion and a preparation method of the on-demand stripping hydrogel. The hydrogel is obtained by combining a hydrophobic amino acid acrylamide derivative and a hydrophilic monomer with a temperature-sensitive monomer and polymerizing. According to the hydrophobic amino acid vinyl monomer phenylalanine derivative provided by the invention, carboxyl and a benzene ring are in a special structure of the same structural unit, so that a hydration layer of a tissue interface can be effectively damaged, and the strength of a matrix can be enhanced by forming stable multiple hydrogen bonds; and strong adhesion (60kPa) can be realized after the adhesive is contacted with wet biological tissues for 5 seconds. The biocompatibility is good, clinical application is facilitated, and a new choice is provided for replacing surgical suture to achieve wound closure and rapid hemostasis clinically.

A double-needle bidirectional barb surgical suture with a buckle ring in the middle comprises a single suture, suture needles are arranged at two ends of the suture, barb suture bodies on two sides of the suture are respectively provided with barbs with barbs pointing to the middle, the buckle ring is arranged in the middle of the barb suture bodies, and the barb suture bodies are made of absorbable materials. After the sutured first needle is used for suturing the tissue, the suture needle on one side penetrates into the buckling ring and then is tensioned, so that the first needle is used for suturing the tissue and is locked, and tissue damage caused by excessive traction of the barb line on the other side of the buckling ring towards the barb opening direction in the traction process when the suture needles on the two sides are continuously used for suturing the tissue subsequently can be avoided; by means of the device, the suture line can be conveniently pulled to twist the intestinal canal in the surgical anastomosis operation process of the gastrointestinal tract, so that an operation operator can conveniently suture the lateral and dorsal intestinal walls, and the gastrointestinal tract operation, especially the gastrointestinal tract anastomosis under a laparoscope, can be facilitated.

The present invention relates to a degradable surgical suture that is driven by near-infrared light to self-shrink and accelerate wound healing, and a preparation method and application thereof. Based on the thermal response characteristics of shape memory materials, the present invention develops a degradable surgical suture that is driven by near-infrared light to self-shrink by means of the photothermal conversion effect of polydopamine, and on this basis, endows the suture with a thermally controlled drug release system to synergistically accelerate the wound healing process and solve various suture problems faced by internal body wounds.

The present invention discloses a laparoscopic cutting stapler stapler assembly, comprising a sleeve, a driving mechanism accommodated in the sleeve and a stapler mechanism fired by the driving mechanism. A semi-enclosed stapler bracket structure is adopted, and a two-side positioning method is adopted to replace a traditional tail positioning method. Positioning is performed through a slot and a buckle, which effectively ensures that the center distance of the stapler body is installed stably, the position of the stapler hole and the staple pit of the staple holder can correctly correspond to each other, thereby ensuring that the staple type has no dovetail phenomenon, and ensuring a good effect of surgical suturing of tissues.

The utility model relates to the field of medical devices, and discloses a surgical suture needle that is easy to thread, including a needle tip portion, a needle body portion fixedly connected to the left side of the needle tip portion, a first extension portion fixedly connected to the left side of the needle body portion, the first extension portion bent downward on the left side and extending to the needle body portion with a misaligned anti-detachment hook, a second extension portion fixedly connected to the left side of the needle body portion, the second extension portion bent upward on the left side and extending to the needle body portion with a return hook, a threading hole is formed between the first extension portion and the second extension portion, and an anti-hook baffle is fixedly connected to the right inner wall of the threading hole. In the utility model, surgical sutures can be threaded quickly by providing a misaligned anti-detachment hook and a return hook, and at the same time, by providing an anti-hook baffle, the hook of the surgical suture needle will not contact the skin during suturing, thereby preventing the hook from hooking the skin, improving surgical efficiency, and increasing surgical safety.

The present invention discloses a search system and method for surgical suture needles, which can realize fast and efficient search for suture needles. An annular groove is arranged at the tail of the suture needle, and the groove is filled with the first and second fluorescent initiators and fluorescent dyes that interact with each other, which are coated with soft and tough materials and separated by brittle isolation sheets; when subjected to external force, the isolation sheet breaks, so that the two fluorescent initiators mix to produce fluorescent reactions, and the fluorescent dyes produce fluorescence of a specific wavelength; the image matching unit searches for the needle holder in the field of view through an image recognition method, and calculates the direction and probability of the suture needle bouncing and losing according to the angle of the needle holder on the ground by comparing with the experimental database, and displays the direction and probability of the suture needle losing through AR glasses, and matches the shape of the suture needle through the image matching unit, and when the suture needle is found, its position is displayed through AR glasses, which is convenient for users to search; the wavelength of the filter matches the fluorescence of the suture needle.