30 results about "Postoperative scars" patented technology

An endoscope and an illuminator are safely placed in a body cavity without generating a noticeable postoperative scar. A method of placing medical insertion instruments into a body cavity includes a first step of inserting, into the body cavity through a first opening formed on a body wall, an endoscope together with a first illuminator; and a second step of inserting, into the body cavity through a second opening formed at a position different from the first opening, a second illuminator. Preferably, the method further includes a third step of pulling out the first illuminator from the first opening and inserting the first illuminator into the body cavity through a third opening formed at a position different from the first and second openings.

The invention relates to anti-postoperation scar degradable multi-branched glycopeptide hydrogel and a preparing method thereof. The hydrogel is formed by self-assembly of multi-branched glycopeptides modified with hydrophobic cholesterol under physiological conditions through hydrophobic forces, pi-pi stacking, hydrogen bonds, and other forces. A glucosamine unit in the structure of the multi-branched glycopeptides can effectively inhibit tissue fibrosis caused by fibroblast proliferation so as to prevent formation of a postoperation scar, so that the hydrogel can be used as an anti-postoperation scar gel phase preparation. By introduction of the hydrophobic cholesterol, biocompatibility of the gel is enhanced, toxic and side effects and inflammation risks of the gel are reduced, and the self-assembly capability and stability of the hydrogel are enhanced. The hydrogel has advantages of high biosecurity, convenient operation, and the like.

The invention discloses a suturing nail of a circumcision instrument. The suturing nail comprises a nail rack, nail legs and a pad, wherein the nail legs are arranged on two sides of the nail rack in a separated mode; the nail legs are integrally connected to the nail rack; the nail legs and the pad are arranged in a separable mode; and the pad is of an arc-shaped structure. Through the structures above, a time of postoperative depinning is greatly shortened, the probabilities of hemorrhage and hematoma are reduced and postoperative scars are reduced, so that healed wounds are nicer in appearance.

The invention relates to a tool to be implanted during glaucoma filtration surgery. The tool can bear and slowly release, in trace quantity, various anti-postoperative-scarring drugs and allows drugsto be supplementarily injected after complete drug consumption; the tool can also automatically promote and maintain the formation of functional filtering blebs for a patient through physical action.The tool mainly comprises three parts: shell 1, drug slow-release bag 2 and drug 3. The tool also has a simplified version, comprising an integration of shell 1 and drug slow-release bag 2. The shellis structurally simplified to slight degree, with size, shape and other parameters and mounting and application methods basically unchanged. The tool (or its simplified version) has the advantages that the aqueous humor filtering function for glaucoma filtration surgery lasts longer through medication action, physical action and other means, long-term effectiveness of the glaucoma filtration surgery is significantly improved, surgical recurrence rate is reduced, and the tool is particularly suitable for surgical treatment of various types of 'refractory' glaucoma.

The invention discloses a traditional Chinese medicine for treating postoperative scar pain, prepared from the following traditional Chinese medicinal raw materials in weight: 8-12g of burreed tuber, 8-12g of zedoary, 4-7g of corydalis root, 13-18g of astragalus root, 23-28g of dangshen, 8-12g of bighead atractylodes rhizome, 5-7g of chuanxiong rhizome, 8-10g of galangal, 4-6g of dried ginger, 2-3g of long pepper, 4-7g of fructus amomi, 8-12g of finger citron and 5-8g of roasted licorice. The preparation method comprises the steps of: decocting all the traditional Chinese medicinal raw materials in water twice, i.e. soaking for 1.7 hours, after boiling with strong fire, simmering for 70 minutes, after filtering, decocting in water for the second time for 40 minutes, and combining to obtain 400-500ml of decoction. The decoction is taken twice per day respectively in the morning and at night. The traditional Chinese medicine disclosed by the invention can eliminate the symptoms after being taken when a patient feels painful, and has low recurrence rate.

The invention provides a traditional Chinese medicine composition for treating burns, scalds and postoperative scars. The traditional Chinese medicine composition for treating burns, scalds and postoperative scars is prepared by using the following raw medicinal materials in parts by weight: 10 to 20 parts of honeysuckle flower, 10 to 20 parts of sargentgloryvine stem, 20 to 30 parts of Tokyo violet herb, 15 to 30 parts of hedyotis, 20 to 30 parts of common selfheal fruit-spike, 10 to 20 parts of centipede, 10 to 20 parts of safflower, 15 to 30 parts of peony root, 10 to 20 parts of garden burnet root, 10 to 20 parts of sanqi, 10 to 15 parts of borneol, 10 to 20 parts of Chinese gall, 10 to 20 parts of leech, 10 to 20 parts of black vinegar and 10 to 20 parts of honey.

The invention relates to a method for preparing an anti-scar coating film by using an electrostatic spinning method and a product and application thereof. The method combines a medicament for inhibiting cell fibrosis damage with the electrostatic spinning technology to obtain the coating film capable of inhibiting postoperative scars and skin wound scars of a laryngeal trachea, firstly, preparinga spinning solution, then adding carboxymethyl chitosan into the spinning solution at a concentration of 5-10mg / ml, and finally, preparing the anti-scar coating film by an electrostatic spinning method. The method adopts an electrostatic spinning method to prepare the nanofiber film, which has good flexibility and tensile strength, and is an excellent film coating material; According to the invention, the medicament can be slowly released through the nanofiber, and an ideal treatment effect can be achieved on scar prevention.

The invention discloses a preparation method and application of a PHBV / rosiglitazone (RSG) sustained-release membrane and belongs to the technical field of medicines. The preparation method comprisesthe following steps: mixing PHBV powder, chloroform and dimethylformamide and preparing a PHBV-TCM / DMF spinning solution with a mass percentage of 5 percent for later use; dissolving rosiglitazone ina dimethyl sulfoxide solution and preparing RSG / DMSO solutions with different concentration gradients; then adding in the spinning solution, preparing spinning solutions with different final concentrations and transferring into a glass syringe for electrostatic spinning to form the rosiglitazone / PHBV sustained-release membrane; the rosiglitazone / PHBV sustained-release membrane is used in the anti-glaucoma filtration operation, is safe, effective and lasting in anti-glaucoma postoperative scar formation and improves the long-term the glaucoma operation success rate, thereby having a very important clinical significance.

The invention relates to the field of medicinal beautifying and particularly relates to a composition for eliminating postoperative scars and a preparation method of the composition. The composition comprises the following components in parts by mass: 4-6 parts of skin secretions of Jiuwei nemipterus virgatus, 6-8 parts of sea buckthorn oil, 8-10 parts of royal jelly, 4-6 parts of borax, 20-24 parts of radix angelicae, 20-24 parts of rhizoma smilacis glabrae and 12-16 parts of saffron crocus, wherein the borax is smashed to the particle size smaller than 400 meshes. The borax in the composition can be used for softening and decomposing fiber textures, while the skin secretions of Jiuxu nemipterus virgatus contain various active factors and can be used for effectively taking effects together with cytogenesis, accelerating the nutrition metabolism of epithelial cells and promoting the proliferation of collagenocyte on the corium layer, so that scars can be eliminated if the borax is matched with the skin secretions of Jiuxu nemipterus virgatus.

The invention relates to a skin beauty suture device. The device comprise a suture needle assembly, a thumb fastening ring and an index finger fastening ring, the suture needle assembly comprises a barb wire, suture needles are connected to the two ends of the barb wire, each suture needle is bent to form a small half circle, and comprises a needle waist, a needle tip arranged at the front end ofthe needle waist and a needle end fixedly connected with the rear portion of the needle waist, the needle waists and the needle ends are each shaped like a cylinder, a threading slot is formed in therear side of each needle end, the wire head and the wire end of the barb wire are arranged in the threading slots of the two suture needles respectively, cylindrical clamping bars used for clamping are arranged on the rear sides of the needle waists, the diameter of the cylindrical clamping bars is smaller than that of the needle waists, two barb belts with opposite directions are symmetrically arranged from the central location of the barb wire, each barb belt is provided with four rows of barbs, and the included angles of every two adjacent rows of barb belts is 90 degrees. Accordingly, thefunctions that in tissue suture surgery, the surgery time is shortened, postoperative scars are reduced, and the device has the advantages of being high in use efficiency, small in postoperative scarand the like.

The invention aims to provide a composition for preventing postoperative scars of double-fold eyelid plasty. The composition comprises centella asiatica total glycoside, retinoic acid and a mesenchymal stem cell exosome solution, wherein the content of the centella asiatica total glycoside is 13-17per mill; the content of the retinoic acid is 2-4 per mill; and the balance is the mesenchymal stem cell exosome solution. The composition is an auxiliary reagent taking mesenchymal stem cell exosomes as main components, has very obvious effects of relieving postoperative swelling, accelerating healing time and preventing and treating scars, and can greatly improve the satisfaction degree of patients on double-fold eyelid plasty.

The invention relates to a skin wound automatic closer. The closer comprises a fixing part, a locking part and a tension strip, wherein the fixing part is constituted by a lid body, a clamping piece and a first supporting strip, the locking part is constituted by an upper slide lid, a lock latch and a second supporting strip; the upper surface of the tension strip is smooth, the bottom surface of the tension strip is provided with a thorn strip area which is composed of several thorn strips which are equidistantly distributed and are perpendicular to the two sides of the tension strip, one side of each thorn strip is perpendicular to the bottom surface of the tension strip, and the other side of each thorn strip forms and the bottom surface of the tension strip form a certain angle; base cloth is stuck to both the bottom of the first supporting strip and the bottom of the second supporting strip, and sticking film is stuck to the bottom of the base cloth. By means of the skin wound automatic closer, the magnitude of sewing force can be continuously finely adjusted to meet that the clinic requirement for optimal sewing force, the problems triggered when the sewing force can only be increased but cannot be reduced are effectively solved, and the skin wound automatic closer shortens the operation sewing time, reduces the postoperative residual scars, increases the wound beautifying healing degree, and can be well applied to the orthopedics department, the endoscopy department, the department of plastic surgery, the department of thyroid surgery, the department of breast surgery, and the like.

The invention discloses a minimally invasive scalp retractor. The minimally invasive scalp retractor comprises a base, a shifting piece and an adjusting part, wherein the shifting piece is arranged on the base in the mode that the shifting piece can move in a reciprocating mode in the first direction, and a shifting head is connected to the shifting piece in a rotatable and lockable mode; and the adjusting part is connected with the shifting piece so as to drive the shifting piece to move on the base, and therefore the position of the shifting piece in the first direction is adjusted. According to the embodiment of the invention, the technical problem that in the prior art, a device for lifting scalp in the minimally invasive temporomuscular valve cutting process is lacked is effectively solved, the blank is filled, and minimally invasive temporomuscular valve cutting under an endoscope is realized. The minimally invasive scalp retractor has the beneficial effects that the operation is convenient, the surgery efficiency is improved, the bleeding amount is reduced, the infection incidence rate is reduced, the postoperative scar is reduced, the trauma to a patient is relieved, and the application range of the temporal muscle flap is widened.

The invention discloses a bionic pus absorption device capable of coordinating with and assisting surgeons in smoothly finishing abscess incision drainage operation. The bionic pus absorption device comprises a bionic sucker (1), a piston head (2), a piston handle (3), a piston cylinder (4) and a piston cylinder cover (5). The bionic sucker (1) designed based on the bionic principle can be attached to any position of a human body, cover the protruding portion, a sunken portion and an uneven portion and can effectively form an enclosed space, negative pressure is formed in the piston cylinder (4) beneficially, and the pus is absorbed. By means of the device, the pus in an abscess cavity can be fully led out under the situation of a smaller incision, and the bionic pus absorption device has the advantages of being smaller in surgical wound, faster in postoperative recovery, smaller in left postoperative scar and the like.

The invention relates to a medical collagen dressing, and a preparation method and applications thereof. The dressing is made of nonwoven cloth and collagen liquid. The collagen liquid comprises 0.1 to 20% of fish skin collagen, 0.1 to 10% of chitosan, 0.1 to 10% of hyaluronic acid, and 0.001 to 0.5% of epidermal growth factor. The provided collagen dressing can be used to treat acne with light and moderate inflammation, repair scars and hyper-pigmentation after photo-rejuvenation, improve the microenvironment of epidermis cells, promote the metabolism of skin tissues, whiten the skin, eliminate skin wrinkles, increase the elasticity and water of skin, and delay aging. The fish skin collagen is originated from fish skin and is very safe; compared with animal collagen, the risk of viral transmission and raw material cost are both reduced; chitosan nonwoven cloth is used to achieve an antiseptic and antibacterial effect without using any antiseptic; and the prepared collagen dressing has the advantages of wide application range, simple preparation technology, high stability of dry products, and convenience in preservation and transportation.

The invention discloses a breast cancer postoperative scar developing marking line device which comprises a box body, a lower cavity and an upper cavity are formed in the box body, a contrast agent is injected into the lower cavity, two first horizontal shaft parts are installed at the position of the upper cavity, a dry cotton thread roll is installed on one first horizontal shaft part, an adhesive tape roll is installed on the other first horizontal shaft part, an auxiliary bonding piece enabling dry cotton threads of the dry cotton thread roll and adhesive tape of the adhesive tape roll to be bonded and fixed together is installed in the box body, the tail section of the dry cotton threads of the dry cotton thread roll penetrates into the lower cavity to be immersed in the contrast agent of the lower cavity, then penetrates out of the lower cavity to stretch into the upper cavity, and jointly stretches into the auxiliary bonding piece together with the tail section of the adhesive tape of the adhesive tape roll to be bonded and fixed to form a marking line, and dry cotton threads penetrate out of the upper end of the auxiliary bonding piece and the top of the box body, and a cutting knife is arranged at the position, penetrated by the marking line, of the box body. The marking line device suitable for breast cancer postoperative scar development does not generate artifacts, does not influence a radiotherapy plan, and does not generate extra dose calculation for the radiotherapy plan.

The invention provides a threading implantation device for surgical annular constriction, and belongs to the technical field of surgical instruments for anal annular constriction and vaginal constriction. The threading implantation device for surgical annular constriction comprises a threader and an implantable band; the threader comprises a threading ring and a connecting rod; the threading ringis of a spiral annular structure and rotates by at least 360 degrees, the outer end of the threading ring is a needle tip, the inner end of the threading ring is smoothly connected with the first endof the connecting rod through a connecting bend, and a leading hole is formed in the needle tip; and the implantable band comprises a hollow tube body and a mastoid end arranged at the first end of the tube body, and the second end of the tube body is a clamping hole end for the mastoid end to be inserted in. According to the threading implantation device for surgical annular constriction, annularimplantation of the anal constriction medium can be smoothly completed under the condition that one incision is reserved around the anus of a human body, and the formation of only one incision has the effects of reducing the infection risk, relieving the pain of a patient, reducing the anal discomfort caused by postsurgical scar problems; and annular connection of the implantable band is achievedthrough matching of the mastoid end and the clamping hole end, so that operation is easy.

The invention relates to an orally taken drug for treatment of postoperative scar pain and a preparation method thereof. The drug comprises the following components by mass: 1-3 parts of rhizome sparganii, 1-3 parts of Curcuma zedoaria, 1-3 parts of clove, 1-3 parts of astragalus, 1-3 parts of Alpinia officinarum Hance, 1-3 parts of Evodia rutaecarpa, 1-3 parts of Amomum villosum, 1-3 parts of Codonopsis pilosula, 1-3 parts of Poria cocos, 1-3 parts of piper longum, 1-3 parts of Citrus medica, 1-3 parts of dried ginger and 1-3 parts of bighead atractylodes rhizome. The preparation method of the drug includes: according to the mass part ratio, selecting and purchasing high quality and clean first grade rhizome sparganii, Curcuma zedoaria, clove, astragalus, Alpinia officinarum Hance, Evodia rutaecarpa, Amomum villosum, Codonopsis pilosula, Poria cocos, piper longum, Citrus medica, dried ginger and bighead atractylodes rhizome, removing impurities and dust from the materials respectively for standby use; soaking the medicinal materials in cooled boiled water for about half an hour to permeate drug tissues, then putting the well soaked medicinal materials and the clarified solution for soaking of the materials into an earthen pot together, injecting cooled boiled water higher than the materials by 35mm and performing first decoction for 40min, taking the medicinal liquid, then injecting slight warm boiled water higher than the materials by 30mm and performing second decoction for35min, and carrying out mixing and concentration into 570ml of 50% Chinese herbal liquid for standby use.

The invention provides a biological protein glue-triamcinolone acetonide slow release agent as well as a preparation method and application of the slow release agent. The slow release agent comprises biological protein glue, aprotinin and triamcinolone acetonide, wherein the biological protein glue is used as a medicine carrier, the aprotinin is used as a slow solvent, and triamcinolone acetonide is taken as an effective medicine component. The prepared biological protein glue-triamcinolone acetonide slow release agent is directly sprayed to a corresponding surgical region of a digestive tract by virtue of an endoscope and is capable of playing a durable anti-inflammatory role, so that the formation of postoperative scars is reduced, the postoperative esophageal stenosis is prevented, and the life quality of a patient is effectively improved.

The utility model relates to a postoperative function exercising belt of affected limb of mammary cancer, which pertains to medical apparatus and instruments. The utility model can avoid postoperative scar contracture of patients of breast cancer, which comprises a waistband with two ends interconnected with a nylon fastener tape; the waistband is penetrated with a shoulder strap, and a lower part of the shoulder strap is connected with a cotton strap through a snap fastener, and the other end of the cotton strap is connected with an elastic ball; a middle part of the shoulder strap is connected with a forearm elastic strap through a snap fastener, and the other end of the forearm elastic strap is connected with a hand holding sleeve; an upper part of the shoulder strap is connected with a shoulder elastic strap through a snap fastener, and the other end of the shoulder elastic strap is connected with a hand holding sleeve. The invention is applied to postoperative function exercising of affected limb of mammary cancer patients, and can avoid scar contracture.

The invention discloses a medicinal plaster for treating postoperative scar connective tissue hyperplasia. The medicinal plaster contains a piece of pasting belt (1), a group of intermittent pasting bars (4) is arranged on each of four sides of the pasting belt (1), a piece of Cataplasm (2) is arranged on the cloth face of the pasting belt (1), a strip of preset paper (3) is preset on each of four sides of the Cataplasm (2), the Cataplasm frame formed after removal of the preset paper (3) can be used for adhesion to the skin, wherein the Cataplasm (2) is provided with a medicinal cake prepared by tender shoots on vine tips of a plant named 'Ci Bo' (the leaves are similar to those of rosa laevigata michx, and the fruits are similar to rosa roxburghii fruits), horseweed herb, root of Viola grypoceras A. Gray, all-grass of Eomecon chionantha Hance, seeds of Angelica citriodora Hance., seeds of Polygonum orientale L., root-bark of celtis sinensis, and bodies of polypedates megacephalus at the weight ratio of 5 to 3 to 3 to 3 to 2 to 2 to 2 to 2. The medicinal cake is manufactured by adopting the pure natural medicinal materials, has the efficacies of eliminating swelling and pain, reducing and softening scar and increasing the motion range for the people suffering from connective tissue hyperblastosis within one year after the operation, and is also used for treating the diseases including traumatic injuries, bone fracture sequela and torn ligament injuries.

The invention relates to a traditional Chinese medicine liquid preparation (wine) for repairing postoperative scars, and belongs to the field of traditional Chinese medicine. The traditional Chinese medicine preparation for repairing the postoperative scars is prepared from the following components in parts by weight: 15-25 parts of rhizoma coptidis, 10-20 parts of musk, 8-15 parts of borneol, 15-25 parts of mulberry branch, and 20-30 parts of radix scutellariae. The invention also discloses a preparing method of the traditional Chinese medicine preparation, wherein the preparing method comprises the following steps: a, chopping rhizoma coptidis, and grinding musk and borneol respectively; b, placing rhizoma coptidis, musk and borneol in the step a in a suitable glass container, and sealedly soaking with 0.8-1.2 L of 60%-75% ethyl alcohol for 1.5-2.5 months, to obtain a solution A; c, placing mulberry branch and radix scutellariae in a suitable container, and sealedly soaking with 1.6-2.4 L of distilled water for 1.5-2.5 months, to obtain a solution B; and d, filtering the solution A and the solution B respectively, mixing and stirring, then filtering, and thus obtaining the traditional Chinese medicine liquid preparation. The components have synergistic effect and are helpful for lightening and repairing the scars.

The invention relates to a traditional Chinese medicine liquid preparation (wine) for repairing postoperative scars, and belongs to the field of traditional Chinese medicine. The traditional Chinese medicine preparation for repairing the postoperative scars is prepared from the following components in parts by weight: 15-25 parts of rhizoma coptidis, 10-20 parts of musk, 8-15 parts of borneol, 15-25 parts of mulberry branch, and 20-30 parts of radix scutellariae. The invention also discloses a preparing method of the traditional Chinese medicine preparation, wherein the preparing method comprises the following steps: a, chopping rhizoma coptidis, and grinding musk and borneol respectively; b, placing rhizoma coptidis, musk and borneol in the step a in a suitable glass container, and sealedly soaking with 0.8-1.2 L of 60%-75% ethyl alcohol for 1.5-2.5 months, to obtain a solution A; c, placing mulberry branch and radix scutellariae in a suitable container, and sealedly soaking with 1.6-2.4 L of distilled water for 1.5-2.5 months, to obtain a solution B; and d, filtering the solution A and the solution B respectively, mixing and stirring, then filtering, and thus obtaining the traditional Chinese medicine liquid preparation. The components have synergistic effect and are helpful for lightening and repairing the scars.

The invention relates to anti-postoperation scar degradable multi-branched glycopeptide hydrogel and a preparing method thereof. The hydrogel is formed by self-assembly of multi-branched glycopeptides modified with hydrophobic cholesterol under physiological conditions through hydrophobic forces, pi-pi stacking, hydrogen bonds, and other forces. A glucosamine unit in the structure of the multi-branched glycopeptides can effectively inhibit tissue fibrosis caused by fibroblast proliferation so as to prevent formation of a postoperation scar, so that the hydrogel can be used as an anti-postoperation scar gel phase preparation. By introduction of the hydrophobic cholesterol, biocompatibility of the gel is enhanced, toxic and side effects and inflammation risks of the gel are reduced, and the self-assembly capability and stability of the hydrogel are enhanced. The hydrogel has advantages of high biosecurity, convenient operation, and the like.

The invention discloses a traditional Chinese medicine for treating postoperative scar pain, prepared from the following traditional Chinese medicinal raw materials in weight: 8-12g of burreed tuber, 8-12g of zedoary, 4-7g of corydalis root, 13-18g of astragalus root, 23-28g of dangshen, 8-12g of bighead atractylodes rhizome, 5-7g of chuanxiong rhizome, 8-10g of galangal, 4-6g of dried ginger, 2-3g of long pepper, 4-7g of fructus amomi, 8-12g of finger citron and 5-8g of roasted licorice. The preparation method comprises the steps of: decocting all the traditional Chinese medicinal raw materials in water twice, i.e. soaking for 1.7 hours, after boiling with strong fire, simmering for 70 minutes, after filtering, decocting in water for the second time for 40 minutes, and combining to obtain 400-500ml of decoction. The decoction is taken twice per day respectively in the morning and at night. The traditional Chinese medicine disclosed by the invention can eliminate the symptoms after being taken when a patient feels painful, and has low recurrence rate.

The invention relates to a nail plate with mixed rows of nail-resisting grooves used in a foreskin plastic cutting and suturing device. The nail plate includes a nail-resisting plate body, and a plurality of nail-resisting grooves are provided on one side of the nail-resisting plate body. The nail plate body is arranged in a circumferential direction, and the nail-resisting grooves have at least one position in the circumferential direction that is denser than other positions. Compared with the existing structure, the present invention sets the spacing between the nail grooves on the nail plate to have a dense and sparse structure to adapt to the uneven distribution of blood vessels around the foreskin. The locations where blood vessels are densely distributed are arranged at a closer spacing. The arrangement structure of the nail grooves avoids the possibility of nail leakage from blood vessels when using the foreskin plastic cutting and suturing device for circumcision. The hemostasis is more reliable and the possibility of postoperative bleeding is smaller. The spacing at other positions is wider and the incision is The medical supply is better, the incision heals quickly, the probability of dehiscence is low, and the postoperative scar is smaller.

The invention relates to a technology for preventing postoperative scar hypertrophy of inner canthus, in particular to a device for preventing and treating postoperative scars of inner canthus. The device for preventing and treating the postoperative scars of inner canthus comprises a bracket, the bracket is provided with two extending parts which separately extend leftwards and rightwards to twoinner canthi of a patient, and anastomosis parts used for wrapping and pressurizing the inner canthi are arranged at the tail ends of the extending parts respectively. The device has the advantages ofbeing simple and reasonable in structural design, convenient to operate and use, capable of effectively preventing or treating postoperative scar hypertrophy of inner canthus, safe and comfortable touse and good in clinical effect.

The invention discloses a closed thoracic drainage device and a drainage bag thereof. The closed thoracic drainage device comprises a drainage tube and a guide needle, wherein a main tube cavity is formed in the middle of the drainage tube, and the guide needle is used for assisting the drainage tube in entering the thoracic cavity; a first branch tube and a second branch tube are arranged at oneend, far away from an inlet end, of a main tube of the drainage tube; a first screw socket is arranged at a leading-out end of the main tube; a second screw socket is arranged at one end of the firstbranch tube; a liquid injection soft valve is arranged at one end of the second branch tube; a ball release bag and a limit clamp are arranged on the outer curved surface of the tube wall of the maintube; and a first medicine cavity and a first liquid injection cavity are formed in the tube wall of the main tube. The closed thoracic drainage device is scientific and reasonable in design and simple and convenient to operate, the drainage tube is bluntly separated into a human body by the guide needle, wounds can be decreased, surgical incisions are small, postoperative scars are not obvious, the wounds are small, minimally invasive effects are achieved, falling or sliding displacement of the drainage tube can be avoided by the aid of the ball release bag and the limit clamp, and risks canbe further reduced.

The invention belongs to the technical field of cardiac surgical instruments, and provides a guide stent and an injection system. The guide stent comprises an outer pipe; an inner pipe, wherein the outer pipe is telescopically arranged on the outer side of the inner pipe; an elastic bracket, wherein one end of the elastic bracket is connected with the outer pipe, and the other end is fixedly connected with the inner pipe; an elastic guide sleeve which is arranged on the elastic bracket; one or several guide pipes, wherein one end of each guide pipe is communicated with the bottom of the elastic guide sleeve, and the other end is connected with the side wall of the elastic support and communicated with the outer side of the elastic support. Through the above technical scheme, the problem that an injection needle is difficult to accurately position in a three-dimensional heart cavity when a catheter is injected through an endocardium is solved, and a series of problems that chest openingtrauma is large as well as anesthesia risks are high caused by chest opening transendocardial intracardiac injection, pericardial structures are directly damaged, postoperative scar adhesion furtherreduces the intervention effect, clinical application is difficult and the like are also avoided.