321 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 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.

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.

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 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 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 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 utility model discloses a subcutaneous distractor and a distracting component, the subcutaneous distractor comprises a threading part, a trunk part and a tail part, and the threading part is provided with a thread passing hole for a suture to pass through; one end of the stem part is connected to one side of the threading part, the stem part is in a rod shape, and a plurality of barb-shaped structures with the top ends facing the threading part are arranged on the stem part; the tail part is arranged at the other end of the trunk part and used for being inserted into soft tissue. The distraction assembly comprises the subcutaneous distraction device and a suture. The suture passing hole of the subcutaneous distractor is used for a surgical suture to penetrate through, the barb-shaped structure of the stem structure plays a role in pulling tissue after implantation, and the tail part is used for being inserted into soft tissue. The distraction assembly fixes and distraction subcutaneous tissue through the subcutaneous distraction device and the suture, achieves wound surface reduction and indirect skin traction, and has the advantages that operation is easy, wound holes are rapidly closed, doctors do not need to suture and pull the subcutaneous tissue conveniently, complications are reduced, and the like.

The utility model provides an anchor assembly with a thread and an operation suite, the anchor assembly with the thread comprises an anchor, a suture and an inserter, the suture is a folding suture, the open end of the folding suture is of a doubling woven structure, the folding suture penetrates through a thread passing hole of the anchor and is arranged in a secondary folding mode around a sliding column, and the insert is inserted into the anchor. The folding sewing thread is wound around the wire spool to be fixed to the handle after being folded for the second time, and the open end of the folding sewing thread after being folded for the second time is clamped and fixed in the fixing clamp. The suture in the anchor component with the suture and the surgical suite comprises the folding suture, the open end of the folding suture is of the doubling weaving structure, synchronous suture passing of the open end which is folded at a time is facilitated, the open end can be recovered by cutting the doubling weaving structure after surgical suture is completed, surgical knots such as Nice knots and MRH knots can be achieved conveniently, and the suture is convenient to use. The operation efficiency can be effectively improved.

The invention provides a corneal limbus stem cell in-situ repair microneedle array patch and a preparation method and application thereof.The corneal limbus stem cell in-situ repair microneedle array patch comprises a biocompatible backing layer and a microarray layer arranged on the biocompatible backing layer, microneedles of the microarray layer are of a conical structure, the height is 100-300 micrometers, the vertex angle is smaller than 30 degrees, and the thickness of the microneedles of the microarray layer is 10-30 micrometers. And a nano-scale porous structure for loading cornea stem cell suspension is arranged in the cornea stem cell support. Through precise geometric design, biomimetic material selection and spatial arrangement optimization, in-situ delivery, microenvironment activation and tissue fusion in a corneal limbus area are realized under the condition of not depending on in-vitro amplification and surgical suture, and the method becomes an important direction for promoting LSCD minimally invasive treatment strategy innovation.

The surgical suture needle convenient to clamp comprises a needle body, a needle head is fixedly connected to the left end of the needle body, a clamping portion is arranged at the right end of the needle body, a needle tail is arranged at the right end of the clamping portion, a limiting portion is arranged at the right end of the needle tail, and a second threading hole is formed in the middle of the needle tail. When the suture needle is used, a suture line penetrates through the second threading hole and then penetrates through the first threading hole, then the suture line is clamped in the two first limiting grooves in sequence, and finally the thread end of the suture line is clamped in the second limiting groove, so that the suture line is prevented from sliding out in the operation process, and during suturing, the needle holding forceps are clamped on the needle body, so that the suture line is prevented from sliding out. The needle head and the needle holding forceps can be provided with a 90-degree clamping angle, the needle holding forceps are clamped at different positions of the clamping part, different clamping angles can be provided, suturing after an operation is facilitated, and the grooves formed in the upper side face and the lower side face of the needle body and the upper side face and the lower side face of the clamping part have the advantages of being good in penetration and small in body pulling during suturing.

The invention relates to a high-antibacterial absorbable medical suture and a preparation method thereof, and belongs to the technical field of medical materials. According to the suture line, PPDO serves as a base material, PLGA is introduced to wrap TCS through a melt blending and spinning technology, and a TCS-coated PLGA core-shell structure antibacterial agent is prepared. A gradient degradation release system is constructed by utilizing the characteristic that PLGA is faster in degradation than PPDO, so that TCS is slowly and continuously released, and the defects of explosive release and insufficient later concentration of drugs in a traditional direct blending method are overcome. Meanwhile, the core-shell structure effectively avoids destructive pores formed in a PPDO matrix due to rapid dissolution of drugs, and greatly maintains the mechanical integrity of the matrix, so that the suture line can provide stable supporting force similar to that of a pure PPDO line in a key healing period in vivo, and the synergism and unification of long-acting antibacterial property, lasting mechanical supporting property and high operation reliability are realized.

The invention relates to a device for a medical instrument for applying a surgical suture, comprising a base unit (1) to which two jaws (2a, 2b) are pivotably attached, each jaw having at least one needle holder which can be switched between a locking position and a release position in order to releasably hold a needle (3). Provided in the base unit (1) is a hydraulic cylinder (5) with a front piston (6) which is connected to a transmission mechanism which actuates a switching element which switches the needle holder between the locking position and the release position. A rear piston (7) controls the movement of the jaws (2a, 2b).

The utility model relates to the technical field of medical instruments, in particular to a surgical suture needle convenient to exert force in thick and tough skin suture. The pressing part is in a straight line shape or a shape similar to a straight line; the fulcrum part is connected to the front end of the pressing part, and the fulcrum part is in a J shape; the force arm part is connected to the front end of the fulcrum part, and the force arm part is in a linear shape or a linear-like shape; and the needle tip is connected to the front end of the force arm part. The surgical suture needle has the advantages that needle holding forceps can be separated, and manual suture can be achieved; force can be conveniently exerted in the process of suturing the thick and tough skin, and compared with a common needle, the needle holder has great advantages in the process of suturing the skin through needle holding forceps.

A surgical stapling system includes an end effector and a support loading assembly. The end effector includes an anvil assembly. The support loading assembly includes an anvil support and an anvil support loader. The anvil support loader supports the anvil support and includes a support plate and a slide. The support plate includes a flexible locking arm. The carriage is coupled to the support plate by a flexible locking arm. The slide supports the anvil support and is configured to slide the anvil support onto the anvil assembly. The slide is configured to move relative to the support plate when the flexible lock arm is disconnected from the slide.

The invention discloses a tension control method and device, electronic equipment and a computer readable storage medium, and relates to the technical field of surgical suture production. According to the method, the two ends of the surgical suture are clamped through the two clamping mechanisms respectively, so that the surgical suture can be kept in a suspended state, a barb cutting mechanism of the barb suture production system can conveniently cut barbs of the surgical suture, and in the barb cutting process of the surgical suture, the barbs of the surgical suture can be cut by the barb cutting mechanism. The tension value of the clamping mechanisms on the surgical suture is obtained through the tension sensor, and the driving mechanism is controlled to drive one clamping mechanism to be close to or far away from the other clamping mechanism based on the tension value, so that the tension value is within a preset range, and it is guaranteed that the surgical suture is in a tightened state and is not broken; therefore, the quality of the produced barb sewing thread is ensured.