36 results about "Absorbable sutures" 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 discloses a disposable suture type circumcision anastomat which solves the problems that in the prior art, during circumcision, prepuce is large in wandering degree, fixing operation is difficult, and the steps of suturing a prepuce wound are tedious. The device comprises a needle and thread support arranged on a penis coronary sulcus in a sleeving mode, a plurality of suturing mechanisms arranged in the needle and thread support in a sliding mode, absorbable sutures arranged in the suturing mechanisms and used for suturing a prepuce wound, a driving device arranged on the needle and thread support and used for driving the suturing mechanisms to move in a reciprocating mode, and a thread connecting support arranged on the needle and thread support. And the suture fixing bracket is sleeved on the penis and is used for fixing the absorbable suture sutured on the wound. According to the needle and thread support, the prepuce can be conveniently fixed during circumcision, the suturing mechanism is driven by the driving device to suture the wound of the prepuce, the wound of the prepuce can be conveniently sutured and fixed, and meanwhile the operation step of suturing the wound of the prepuce can be simplified.

The invention discloses an absorbable suture line containing fibroin and a preparation method of the absorbable suture line, and relates to the technical field of absorbable suture lines. The absorbable suture line containing the silk protein is prepared from the following raw materials in parts by weight: 35 to 50 parts of silk protein, 10 to 20 parts of polylactic acid, 15 to 25 parts of polyglycolide-lactide, 1 to 3 parts of antibacterial agent, 2 to 5 parts of modified toughening agent, 1 to 4 parts of nano mineral filler, 0.5 to 2 parts of cross-linking agent and 2 to 5 parts of plasticizer, the preparation method comprises the following steps: reacting protocatechuic acid with ethanolamine to generate an intermediate 1; and reacting the intermediate 1 with 5, 10, 15, 20-tetra (4-carboxyl phenyl) porphyrin to generate the antibacterial agent. The prepared absorbable suture line containing the silk protein has good mechanical performance, self-repairing performance and antibacterial performance.

The invention relates to the technical field of biological materials, and provides an absorbable self-repairing suture line for maintaining the stability of a mechanical biological microenvironment and a preparation method of the absorbable self-repairing suture line. According to the suture line, an absorbable high polymer material is adopted as a matrix, and PLA microcapsules containing a medical-grade cyanoacrylate n-octyl ester repairing agent are uniformly dispersed in the matrix through a melt blending spinning process. When the suture line generates microcracks at dynamic tissue parts such as cardiovascular and digestive tracts due to periodic stress, the stress at the tip of the cracks enables the microcapsules to be broken to release the repairing agent, rapid in-situ polymerization occurs under triggering of tissue fluid, the self-repairing efficiency of 90% or above is achieved, and the strength retention rate of 95% or above is maintained in the key rehabilitation period of the suture line. The defect that a traditional absorbable suture line is prone to fatigue fracture in a dynamic environment is overcome, the mechanical integrity is actively maintained through an intelligent self-repairing mechanism, all components can be completely degraded and absorbed, and a safer and more reliable solution is provided for dynamic tissue repairing.

The application relates to the technical field of medical suture materials, and particularly discloses a non-absorbable suture with tissue self-adaptive performance, which comprises a core layer, a transition layer and an outer layer; the core layer and the transition layer are fixed through hot melt adhesion, and the outer layer is coated on the surface of the transition layer through electrostatic spinning; the core layer is a polyether ether ketone fiber with a diameter of 50-100 mu m and a tensile modulus of greater than or equal to 3 Gpa; the transition layer is a nickel-titanium alloy wire braided net with a thickness of 40-60 mu m, and the wire diameter of the nickel-titanium alloy wire is 20-30 mu m; and the outer layer is a poly-lactic acid-glycolic acid copolymer coating layer containing nano-hydroxyapatite with a thickness of 30-50 mu m; and the application further provides a preparation method of the non-absorbable suture. The non-absorbable suture has the advantages of tissue self-adaptive performance, persistent mechanical support and bioactivity, can effectively avoid tissue cutting, abrasion and suture loosening, and can reduce the incidence of postoperative complications such as inflammation and pain.

1. A surgical kit for performing surgery for the treatment of reflux disease, the surgical kit comprising the following components: An implantable motion restriction device configured to impede movement of the lower esophageal sphincter relative to the thoracic diaphragm, the device having at least a portion positioned between the angle of His and the thoracic diaphragm; a lubricant including an antimicrobial agent for use in combination with the implantable motion restriction device; and at least one absorbable suture.

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 utility model discloses a kind of absorbable suture coating devices, it is related to suture technical field, including connecting frame, it further includes placing frame, auxiliary wheel, transmission rod, transmission motor, threaded rod, threaded tube, moving frame, mounting bracket, reinforcing plate, lower press roll and control mechanism, placing frame is installed in the inside of connecting frame, auxiliary wheel is rotatably connected in placing frame, two groups of transmission rod are rotatably connected in connecting frame, transmission motor is installed on the upper surface of connecting frame, the output end of transmission motor is arranged in the transmission rod top end located at top, threaded rod is installed in transmission rod inner end, threaded tube is screw-connected on the outer surface of threaded rod, moving frame is installed on the outer surface of threaded tube, mounting bracket is installed on the lower surface of moving frame, the utility model is used to solve the gap between suture and coating brush in prior art, to cause the problem that part position on suture surface is difficult to adhere coating.

The present invention belongs to the technical field of medical surgical instruments, and in particular relates to an absorbable suture kit, comprising a storage box, wherein a suture needle storage device and a suture storage device are provided in the storage box, wherein the suture needle storage device comprises a storage tray, wherein a plurality of storage slots are provided on the storage tray, wherein suture needles are placed in the storage slots, and the bottom ends of the suture needles are inserted through the bottom of the storage tray. Compared with existing suture kits, the notch on the side of the suture needle threading hole in the present invention enables the suture to be quickly passed through the threading hole under the cooperation of the suture needle storage device and the suture storage device, thereby improving the threading efficiency. In addition, the present invention can be arbitrarily matched according to the different specifications of the suture needles and sutures used, thereby being able to easily meet the requirements of different suture positions for suture needles and sutures, thereby improving the efficiency of using suture needles and sutures.

The present application relates to the field of absorbable suture, specifically to a polishing device for collagen suture, comprising: a polishing shell, a pay-off rack is installed at the bottom of one side of the polishing shell, and a take-up rack is installed at the bottom of the other side of the polishing shell; when polishing the collagen suture, the driving motor works to drive the gear to rotate, the gear is connected with the ring gear through meshing to drive the rotating drum to rotate in the inside of the installation shell, and synchronously drives the polishing piece to rotate on the surface of the collagen suture, when the polishing piece rotates, the first elastic support rod pushes the fixed shell and the polishing block through the elasticity of itself, so that the polishing block can always be attached to the collagen suture to polish the collagen suture, which changes the traditional polishing of the suture by the polishing disc, and has the advantage that the suture can be wrapped and polished in all directions during polishing.

The invention relates to the field of absorbable suture lines, in particular to a degradable drug-loaded suture line and a preparation method and application thereof. The invention provides a degradable drug-loaded suture which is composed of a dispersed phase and a continuous phase, and a uniform wrapping layer is formed on the surface of the dispersed phase by using the continuous phase; the dispersion phase comprises a degradable polymer, an organic solvent and a loaded drug; the continuous phase comprises a surfactant and an alcohol solution. The degradable drug-loaded suture line prepared by the invention is used for preparing products for suturing skin and deep tissue after adenomyosis surgery, has good biocompatibility, can avoid suture removal, stably releases drugs at the sutured part, and reduces side effects caused by repeated medication.

This invention relates to the field of stapler technology, specifically a tracking-type electric laparoscopic stapler with absorbable suture needle. It includes a housing, a closing handle rotatably mounted inside the housing, a linkage bracket fixedly connected to the closing handle, an operating mechanism disposed at one end of the linkage bracket, and a limiting mechanism and an electric drive mechanism disposed inside the housing. A sliding bracket is slidably mounted inside the housing, and a transmission rack is fixedly mounted inside the sliding bracket. The housing also includes a lifting frame, an adjustment mechanism, and a first transmission mechanism. A locking mechanism and a connecting mechanism are respectively disposed at the top and bottom of the sliding bracket. This invention solves the problem that a failure in the motor drive mechanism can cause the stapler to jam, interrupting the surgical process and delaying patient treatment, further improving the reliability and clinical applicability of electric staplers in the biomedical engineering industry.

The present application relates to a kind of intelligent color-changing absorbable suture and its preparation method, belong to medical instrument field.The suture includes inner layer support layer, response layer, drug release system and outer layer encapsulation layer.The inner layer support layer is made of absorbable polymer;Response layer includes pH response unit and enzyme response unit, can produce identifiable color change under tissue infection microenvironment;Drug release system is loaded with antibacterial drug by mesoporous nano-carrier and is modified with polyelectrolyte gate layer, triggers drug burst release under microenvironment change;Outer layer encapsulation layer is at least partially degradable, to expose response layer after predetermined time.The suture realizes phased degradation by three-layer structure: outer layer encapsulation layer is preferentially degraded to expose response layer, response layer degradation provides infection monitoring window period, and inner layer support layer is lastly degraded to maintain mechanical support, realizes the synergistic function of infection monitoring, drug release and tissue repair.

A surgical kit for performing a surgical procedure for treating reflux disease, the surgical kit comprising: an implantable movement limiting device (110, 111a, 111b) configured to prevent movement of a subesophageal sphincter relative to a diaphragm, at least partially interposed between the His angle and the diaphragm; a lubricant comprising at least one antibacterial substance for use with an implantable motion limiting device; and at least one absorbable suture (153).

The present invention relates to the technical field of medical devices and discloses a magnetically responsive telescopic lymphatic-venous drainage anastomosis bridging device, comprising an outer tube and an inner tube. The gap between the inner wall of the outer tube and the outer wall of the inner tube forms a lumen, and a three-dimensional spiral telescopic structure is provided in the lumen. The three-dimensional spiral telescopic structure is arranged around the outer wall of the inner tube. The three-dimensional spiral telescopic structure comprises absorbable sutures and magnetic wires. The bundles woven into the absorbable sutures and the magnetic wires are intertwined to form a spiral wire. The spiral wire forms a spiral gap in the lumen, and the spiral gap is used to guide lymph fluid to flow toward the vein. Under the control and regulation of the magnetic field, the deformation of the magnetic wire drives the deformation of the absorbable suture and then drives the contraction and expansion deformation of the outer tube and inner tube structures, changing the cross-sectional area in the device so that the spiral gap changes. After the magnetic field control and regulation are completed, the deformed shape can be maintained unchanged for a considerable period of time, thereby achieving the purpose of controlling the flow direction, flow rate and flow of lymph and blood flowing through the device.

The invention belongs to the technical field of surgical sutures, particularly relates to a special storage device for absorbable sutures, and aims to solve the problem that the temperature and the humidity of the storage device need to be controlled and adjusted when spinning tows of the absorbable surgical sutures are stored due to the fact that the absorbable surgical sutures have the property of being decomposed by water in the prior art. A cylinder cover is arranged at the top end of the cylinder body, a cylinder seat is arranged at the bottom end of the cylinder body, a wire guide cylinder is fixedly connected to the upper end of the circumference of the cylinder body, and a sealing plug is inserted into the outer side of the wire guide cylinder. The drying agent is arranged in the middle of the winding piece, uneven humidity of the inner side and the outer side of the absorbable operation line spinning tow is avoided, the drying agent bracket is filled with the yarn bag drying agent, when the negative pressure fan works, air flow in the barrel can be absorbed, the air flow penetrates through the yarn bag drying agent to escape during discharging, and the drying effect is improved. Therefore, the humidity of the environment in the cylinder can be controlled, and the phenomenon that the absorbable surgical suture spinning tows are partially or completely hydrolyzed is avoided.

The invention belongs to the technical field of medical surgical instruments, and particularly relates to an absorbable suture suite which comprises a storage box, a suture needle storage device and a suture line storage device are arranged in the storage box, the suture needle storage device comprises a storage disc, a plurality of storage grooves are formed in the storage disc, suture needles are placed in the storage grooves, and the suture line storage device is arranged in the storage disc. And the bottom end of the suture needle is inserted into the bottom of the storage disc in a penetrating manner. Compared with an existing suture suite, the suture suite has the advantages that the suture can be quickly threaded into the threading hole under the matching action of the suture needle storage device and the suture storage device through the notch in the side face of the threading hole of the suture needle, so that the threading efficiency is improved; according to the invention, random matching can be carried out according to different specifications of used suture needles and suture lines, so that the requirements of different suture positions on the suture needles and the suture lines can be easily met, and the use efficiency of the suture needles and the suture lines is improved.

The invention belongs to the technical field of surgical articles, particularly relates to a drying and dewatering device for absorbable suture production, and aims to solve the problem of low drying efficiency caused by low-speed airflow slow drying in the prior art. A rectangular discharging pipe is fixed to a barrel opening in the top end of the disinfectant box, two cross beam plates are fixed to the top end of the disinfectant box, a plurality of disinfection mechanisms are arranged below the two cross beam plates, each disinfection mechanism comprises a reset tension spring fixed to the lower portion of the corresponding cross beam plate, and the same brushing cloth belt is fixed to the bottom ends of the two reset tension springs; and a double-disc guide wheel for turning the brushing cloth belt is arranged at the barrel bottom of the disinfectant box. According to the device, the sewing thread body which moves forwards rapidly can be scrubbed and disinfected, hot air can be blown out from the inclined upper portion of the sewing thread body rapidly, and the hot air can act on the sewing thread body for a long time in cooperation with the pipeline type design, so that the drying effect is improved.

The invention relates to an intelligent color-changing absorbable suture line and a preparation method thereof, and belongs to the field of medical instruments. The suture line comprises an inner supporting layer, a response layer, a drug release system and an outer packaging layer. Wherein the inner supporting layer is composed of an absorbable polymer; the response layer comprises a pH response unit and an enzyme response unit, and can generate recognizable color change in a tissue infection microenvironment; the drug release system is formed by loading an antibacterial drug on a mesoporous nano-carrier and modifying the mesoporous nano-carrier with a polyelectrolyte gating layer, and drug burst release is triggered under the change of a microenvironment; the outer encapsulation layer is at least partially degradable to expose the response layer after a predetermined time. According to the suture line, staged degradation is achieved through a three-layer structure, the outer packaging layer preferentially degrades and exposes the response layer, the response layer degrades to provide an infection monitoring window period, the inner supporting layer finally degrades to maintain mechanical support, and the synergistic function of infection monitoring, drug release and tissue repair is achieved.

The application relates to the technical field of medical devices, in particular to a polymer modified absorbable suture, which comprises an outer antibacterial layer, a connecting line and a tie, the inner part of the outer antibacterial layer is internally provided with an inner antibacterial layer, the inner part of the inner antibacterial layer is internally provided with a toughness layer, and the toughness layer is fixedly connected with a reinforcing layer in the inner part, when suturing, the device is cut to select a proper length, the connecting line between the two outer antibacterial layers is cut, the connecting line is then passed through a needle hole to connect the device to the needle hole, the needle is penetrated, the flat-elliptical connecting line is more convenient for a user to penetrate the needle, the needle penetration time is effectively reduced, and the device is more convenient to use.

A surgical kit for performing a surgical procedure for treating reflux disease, the surgical kit comprising: an implantable movement restriction device (110, 111a, 111b) configured to be hindering movement of the lower esophageal sphincter relative to the thoracic diaphragm, placed at least partly between the angle of His and the diaphragm, a lubricant including at least a bacteriostatic substance for use with the implantable movement restriction device, and at least one resorbable suture (153).

The invention discloses a titanium mesh reverse in-place guide plate and barrier membrane integrated forming and fixing method, and relates to the technical field of tooth treatment, and the method comprises the following steps: S1, data acquisition; s2, designing a titanium mesh; s3, a guide plate design stage and a barrier film template design stage; and S4, an intraoperative implementation stage: determining the covering range of the barrier membrane based on the titanium mesh designed before the operation, pre-cutting and forming, after cutting is completed, covering the corresponding side of the titanium mesh with the cut barrier membrane, and performing titanium mesh-barrier membrane integrated pre-fixation in the near, far, middle and root square areas of the barrier membrane and the titanium mesh through absorbable sutures. The titanium mesh can be accurately positioned, the operation process is simplified, the operation time is saved, and accurate covering of the barrier membrane is ensured.

The present application belongs to the technical field of medical suture disassembly reel, especially to an absorbable suture anti-pollution disassembly reel. In view of the problems existing in the prior art, the following scheme is proposed, including a rotating column, a extrusion groove is arranged on the circumferential side of the rotating column, a moving groove is arranged on the top and bottom of the extrusion groove, a circular plate is slidably connected to the top inner wall of the circumferential side of the moving groove, a moving column is fixedly connected to the bottom of the circular plate, and the other end of the moving column extends into the interior of the extrusion groove. The rotating column is arranged, the user uses tweezers and other tools to insert one end of the absorbable suture between the two lifting plates, rotates the rotating shaft to drive the major axis of the elliptical block to stagger the lifting plates, and at the same time, the second spring drives the two sets of extrusion plates to press the one end of the absorbable suture, which is beneficial to the convenient fixation of the absorbable suture, improves the convenience of the device in use, and the rotating column drives the absorbable suture to be evenly wound on the rotating column.

The invention relates to the technical field of medical instruments, in particular to a gradient degradation composite absorbable suture line and a preparation process. The invention discloses a gradient degradation composite absorbable suture line which sequentially comprises a supporting layer, a middle layer and an outer layer from inside to outside in the radial direction, and the outer layer is prepared from, by weight, 50%-70% of polyglycolic acid, 20%-35% of polyethylene glycol-polylactic acid segmented copolymer and 5%-10% of basic salt buffering particles. According to the composite absorbable suture line and the preparation process, through material compounding and structural design, staged regulation and control of the degradation rate and the mechanical strength are achieved, and it is ensured that the strength of the suture line is synchronous with the tissue healing process.

The application relates to the technical field of medical devices, and discloses an absorbable door opening maintainer for cervical vertebra canal plasty, wherein the maintainer body is integrally formed by using high-strength absorbable material, a hollow bone ingrowth matrix is arranged in the maintainer body in the axial direction, the maintainer body comprises a spiral coupler structure and a zero-cut trace cable structure, and the spiral coupler structure and the zero-cut trace cable structure are both hollow structures. In the application, the whole maintainer is made of high-strength absorbable material, is matched with absorbable sutures of the same type, the degradation periods of the two are mutually adapted, the degradation process is synchronized with the bone growth period, secondary surgery for removal is not needed, secondary damage to bone and soft tissues is avoided, the multi-dimensional bone ingrowth channel is beneficial to the migration, proliferation and angiogenesis of bone cells, biological fusion between the maintainer and the host bone is promoted, and the bone repair process is accelerated.

The invention belongs to the technical field of medical materials, and particularly relates to an antibacterial super-smooth absorbable suture line and a preparation method thereof. Compared with the prior art, the antibacterial super-smooth absorbable suture line prepared by the invention can avoid winding and slipping of the suture line during knotting, reduce tissue damage, reduce release of a pain medium, promote wound healing and shorten the recovery time of a patient; meanwhile, the super-smooth surface can reduce bacterial adhesion through physical repulsion, and the super-smooth surface and antibacterial groups form double protection of physical blocking and chemical killing; the antibacterial agent is fixed on the surface of the suture line in a covalent bond combination mode through a grafting technology, no free antibacterial agent exists, local irritation is low, the specific surface area of the suture line can be effectively increased, and the antibacterial efficiency is improved.

The invention provides a circumcision anastomosis device which can finish circumcision anastomosis with high precision and simple operation and can replace a suturing nail by adopting an absorbable line, and the circumcision anastomosis device comprises a positioning piece, a fixing piece and a fixing piece, the shell is provided with a matching end matched with the positioning piece; the girdling part is used for girdling the prepuce part to form a part to be sutured; the suturing piece is rotatably arranged in the shell and is provided with a suturing knob; each first suture needle is provided with an arc-shaped needle part facing the matching end, a first threading groove is formed in the tip part of each arc-shaped needle part, and a thread clamping groove is formed in the middle of each arc-shaped needle part; the second suture needle is arranged at the end, close to the matching end, of the suture piece and provided with a second threading groove, a first suture line penetrates through the thread clamping grooves and the first threading groove jointly, and a second suture line penetrates through the second threading groove. The device further comprises a driving mechanism for driving the first suture needle to slide towards the matching end and enabling the arc-shaped needle parts to jointly penetrate into the to-be-sutured part.

The invention relates to the technical field of breast surgery, and discloses a breast areola beautifying incision surgery method for breast mass resection by reserving a nipple areola complex, which comprises the steps of preoperative evaluation, iconography positioning, incision design, preoperative preparation, mass exposure resection, incision suture and the like: accurate positioning is carried out through ultrasound or a molybdenum target; based on a positioning result, designing an annular mammary areola incision along a mammary areola edge skin pigment boundary line; the tissue is bluntly separated in the operation to protect the mammary gland function, and the tumor is completely cut off along the safe edge; and finally, performing layered sewing by using an absorbable suture to realize intradermal beauty sewing. According to the invention, scars are covered by chromatic aberration through surrounding the mammary areola incision, postoperative traces are reduced in combination with multi-layer fine suture, meanwhile, complete resection of mastitis is ensured, the treatment effect and the appearance attractiveness of breasts are considered, and the mammary gland resection device is suitable for mammary gland mastitis, mastitis focus and total mammary gland resection patients needing to retain nipple and mammary areola complexes. And particularly, the requirements of young women on postoperative appearance are met.

The invention belongs to the technical field of medical suture splitting rolling frames, in particular to an anti-pollution splitting rolling frame capable of absorbing sutures, and aims to solve the problems in the prior art, the following scheme is provided: the anti-pollution splitting rolling frame comprises a rotating column, an extrusion groove is formed in the circumferential side surface of the rotating column, and moving grooves are formed in the top and the bottom of the extrusion groove; a circular plate is slidably connected to the inner wall of the top of the circumferential side face of the moving groove, a moving column is fixedly connected to the bottom of the circular plate, and the other end of the moving column extends into the extrusion groove. Through the arranged rotating column, a user uses tools such as tweezers to make one end of an absorbable suture go deep into the position between the two lifting plates, a rotating shaft is rotated to drive a long shaft of an oval block to stagger the lifting plates, meanwhile, a second spring drives an upper set of extrusion plates and a lower set of extrusion plates to press one end of the absorbable suture, and the device can conveniently fix the absorbable suture; the use convenience of the device is improved, and the absorbable suture is driven by the rotating column to be uniformly wound on the rotating column.

The application discloses a kind of absorbable suture for surgical suturing and preparation method thereof, it is related to medical material technical field.The absorbable suture for surgical suturing includes the following weight parts of raw materials: polylactic acid 50-65 parts, polyglycolic acid 15-20 parts, sodium carboxymethyl cellulose 3-5 parts, toughening agent 3-8 parts, antibacterial agent 3-6 parts, lubricant 0.3-0.8 parts, sodium hyaluronate 1-2 parts, polyvinyl alcohol 5-10 parts;The toughening agent is generated four-arm compound by reaction of hydroxyethyl acrylate and ethylenediamine, and then reacts with 6-caprolactone, DL-lactide to obtain.The absorbable suture for surgical suturing prepared by the application has excellent tensile property and antibacterial property, and can meet the application requirements of clinical medical treatment.