246 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 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 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 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.

The invention provides a high-molecular composite surgical suture with mechanical stability functionalization and a preparation process of the high-molecular composite surgical suture, and belongs to the technical field of surgical suture processing. According to the composite suture with the antibacterial function, a skin layer is made of porous polylactic acid fibers loaded with nano-silver particles, and a core layer is made of double-strand poly (p-dioxanone) fibers. In the spinning process, the fiber structure is controlled by controlling the environment humidity, and the PLA fiber membrane with the porous structure is obtained. The porous PLA fiber membrane is used as a woven shell layer, so that the mechanical property of the poly (p-dioxanone) suture line is improved, meanwhile, the specific surface area is increased, and an obtained composite line structure can form a load network structure, can adsorb nano-silver particles more efficiently, improves the antibacterial property and also has a synergistic effect on a subsequent drug slow release behavior.

The invention discloses a surgical conduit anastomosis suture tensioning device, which comprises a tube A and a tube B, wherein the tube A is a preset tube, and the tube B is a suture hooking tube; the preset tube comprises a connector, a first crossbar and a first tail, the first crossbar is arranged between the connector and the first tail, the connector is vertical to the first crossbar and magnetic, and a plurality of grooves are evenly distributed on the surface of the first crossbar; the suture hooking tube comprises a suture hooking head, a second crossbar and a second tail, the second crossbar is arranged between the suture hooking head and the second tail, the suture hooking head is vertical to the second crossbar and magnetic, a suture hooking slot is arranged at the tip of the suture hooking head in a forky form, the surface of the second crossbar is smooth and free from grooves, and the second tail has the same structure as the first tail. The invention relates to the technical field of surgical suture tensioning device, in particular provides a surgical conduit anastomosis suture tensioning device, which can effectively improve the continuous conduit suture efficiency and precision, promote uniform anastomotic healing, and reduce anastomotic stenosis caused by scars.

The utility model discloses a surgical suture needle storage box with high sealing performance, which comprises a storage box main body, a plurality of auxiliary mechanisms are hinged to the upper end of the storage box main body, a sealing mechanism is fixedly arranged in the middle of the interior of the storage box main body, and a silica gel pad is fixedly arranged at the lower end of the interior of the storage box main body. A plurality of needle grooves are fixedly formed in the upper end of the silica gel pad. According to the storage box, through the design of the auxiliary mechanism, the auxiliary mechanism is connected through magnetic attraction of the first magnetic attraction block and the second magnetic attraction block, the lifting cover can be tightly attached when the needle taking opening is closed, dust and impurities are prevented from entering the lifting cover, meanwhile, the sealing performance of the needle taking opening is further enhanced through the first sealing ring, and the needle taking opening is prevented from being damaged. Due to the design of the needle taking opening, the needed suture needle can be conveniently taken out in the operation process, the box cover does not need to be completely opened, the time that the suture needle is exposed in the external environment is shortened, and the sealing mechanism is matched with a sealing protruding block through a sealing groove formed in the sealing mechanism.

The invention discloses a surgical suture needle with a suture for annular cervix suture, and relates to the technical field of medical instrument research, the surgical suture needle comprises a needle body, a needle head arranged at the front end of the needle body, a connecting mechanism movably mounted at the rear end of the needle body and a connecting suture line connected to the connecting mechanism, and a threaded opening is formed in the rear end of the needle body; the connecting mechanism comprises a connecting assembly and a threaded column fixed to the upper end of the connecting assembly, the threaded column is installed in the threaded opening in a threaded connection mode, the connecting assembly is attached to the rear end of the needle body, and one end of the connecting suture line is limited in the connecting assembly; according to the device, the needle body and the connecting mechanism are in detachable threaded connection, and the connecting suture line is indirectly connected to the needle body through the connecting mechanism, so that the connecting suture line can be indirectly connected to suture needles with different lengths, and an operator can select the suture needle with the corresponding length to perform an operation according to the condition in the operation; operation efficiency is improved, and operation risks are reduced.

The invention belongs to the technical field of medical instruments, and particularly relates to an absorbable suture and a preparation method and application thereof. Two coatings are loaded, from inside to outside, the first coating is the rapamycin coating with the anti-scar effect, the second coating is the artemisinin coating with the antibacterial and anti-inflammatory effects, and stable loading and slow release of the rapamycin medicine and the artemisinin are achieved through the structure of the two coatings. The suture can release artemisinin in the surgical suture incision inflammation period, infection is prevented, and inflammatory response is reduced. The rapamycin is released in a surgical suture incision scar proliferation period, so that scar proliferation of a surgical incision is prevented and reduced.

The invention discloses a surgical suture for lifting. A surgical suture for lifting according to an embodiment of the present disclosure comprises: a suture body having a needle coupled to at least one of both ends thereof; a plurality of protrusions formed at the wire body such that the plurality of protrusions protrude from the wire body; a plurality of stopper portions coupled to the plurality of protruding portions, respectively; and a plurality of controllers each having a through-hole and positioned at the wire body between the plurality of stoppers through the through-hole, and configured to selectively allow the stoppers to pass through the through-hole and allow the protrusion to pass through the through-hole when the stoppers pass through the through-hole.

The application discloses a round piece type surgical suture needle recycling and counting device, and relates to the technical field of operating room nursing auxiliary supplies.The device comprises a round piece body, and the upper surface of the round piece body is provided with a pressing guide area.The elastic fixing layer automatically clamps the suture needle through the pressing guide area, and one-handed operation is simple and convenient.The suture needle tip is pressed down to push the arc-shaped color plate to slide out through the pressing and rotating structure in the color development prompt assembly, and the use state is clearly displayed.The state check can be completed by scanning after or during the operation, the problem that the counting of the sharp instrument box is not intuitive is effectively solved, the device is suitable for metal and non-magnetic suture needles, the elastic fixing layer can adapt to suture needles of different specifications, the material limitation of the magnetic plate is avoided, each round piece is provided with an independent number, and the round pieces can be connected into a group through a buckle assembly.Nurses can quickly count the number of suture needles according to the number of the used round piece and the state of the color plate, and it is not necessary to pull out the suture needles one by one.The overall structure is small and compact, the device is low in cost as disposable sterile consumables, and is convenient to use.

The present invention belongs to the technical field of biomedical material manufacturing, and particularly relates to a preparation method of an easily sutureable braided artificial blood vessel. In the present invention, untwisted polyester filaments are used as the core yarn, and water-soluble vinylon is used as the covering yarn to make a polyester covered yarn; then, the water-soluble vinylon filaments are dissolved by water washing, and then coating, densification treatment, and re-coating are carried out to obtain an easily sutureable braided artificial blood vessel. The easily sutureable braided artificial blood vessel prepared by the above method is soft and fluffy, reduces the difficulty of surgical suture, and is beneficial to the attachment and growth of endothelial cells. The two coatings and densification treatment increase the coating fastness and uniformity, and effectively reduce the permeability of the easily sutureable braided artificial blood vessel.

The present invention discloses a polydioxanone and its preparation method and application, in particular its application in medical materials (e.g., sutures). The polydioxanone has a specific molecular weight and molecular weight distribution, is highly stable, has a long shelf life, is advantageous for storage and use, and has good processing properties. The polymer fiber prepared using the polydioxanone is easily formed, has high breaking strength, and has good performance in use. The polydioxanone is suitable for preparing surgical sutures and for preparing medical dressings, anti-adhesion materials, orthopedic repair materials, tissue engineering scaffolds, and other medical materials by weaving the fibers. The polydioxanone can also be used to prepare products such as drug carriers, and has good application value. The preparation method of the polydioxanone provided by the present invention is simple to operate, has readily available raw materials, uses a small amount of catalyst, has low cost, is suitable for industrial production, and in particular can obtain polydioxanone with a more regular and narrower molecular weight distribution.