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30 results about "Calcanean tendon" patented technology

High-purity natural collagenous fiber and preparation method thereof

The invention discloses a high-purity natural collagenous fiber and a preparation method thereof. The collagenous fiber is characterized in that fresh traceable animal muscle tendon or achilles tendon is used as a raw material, and is subjected to pre-treatment, water soaking, supercritical carbon dioxide fluid degreasing, alkali leaching, first enzyme treatment, acid leaching, secondary enzyme treatment, salting out, centrifugal purification and other processes to obtain the high-purity natural collagenous fiber. The high-purity natural collagenous fiber prepared by the method is aggregation of natural collagen molecules, has the quarternary structure of collagen and the intrinsic bioactivity of collagen, and has more spatial structure features of collagen in natural tissues, so that the natural tissue structure can be further simulated. Compared with a collagen material, the natural collagenous fiber prepared by the method has the advantages of excellent mechanical performance, thermal stability and biodegradation performance, and the structure of the natural collagenous fiber is relatively stable and easy to store; and characteristic group expression of cells can be activated, and normal characteristic expression of cells can be maintained, so that adhesion, growth and proliferation of cells can be benefited. The natural collagenous fiber can be used for preparing hemostatic materials, tissue engineering scaffold materials, medical plastic and cosmetic materials and the like.
Owner:SICHUAN UNIV

Technology of preparing acid-soluble bovine tendo calcaneus collagen by freeze thawing-ultrasonic method

The invention relates to a technology of preparing acid-soluble bovine tendo calcaneus collagen by a freeze thawing-ultrasonic method. The technology comprises the specific steps of: (1) bovine tendo calcaneus pretreatment: removing impurities from fresh bovine tendo calcaneus, soaking with normal saline, washing with pure water, freezing, slicing and airing, (2) swelling: putting and soaking aired bovine tendo calcaneus slices in an acetic acid solution for swelling, (3) beating: adding pure water into a swelled bovine tendo calcaneus suspension, performing mechanical beating to obtain crude slurry, (4) freeze thawing-ultrasonic: freezing the beaten bovine tendo calcaneus crude slurry, then performing ultrasonic treatment, repeating the freeze thawing-ultrasonic process to obtain a crude collagen extract, and (5) purification: performing filtering, centrifuging, salt precipitation, dialysis and freeze drying on the crude collagen extract to obtain the collagen product. The extraction method of the bovine tendo calcaneus collagen is simple and convenient and low in cost, the extraction rate of the collagen is increased without using enzyme, the purity of the obtained collagen is high, and a natural structure of the collagen is reserved. The prepared collagen can be applied to industries of medicine, cosmetics and the like.
Owner:SICHUAN UNIV

Device for fixing achilles tendon skin and use method of device

InactiveCN110811719AAvoid the bad phenomenon of accidental breakageAvoid the hassle of secondary fixationSuture equipmentsHeavy metal active ingredientsCalcanean tendonNursing care
The invention relates to the technical field of medical devices, in particular to a device for fixing achilles tendon skin. The device comprises a flexible fixing part and a rigid fixing part, whereinthe rigid fixing part is detachably mounted on the flexible fixing part. The device has a better fixing effect and low possibility of causing pressure sore on the achilles tendon skin of a patient, effectively shortens recovery time of the patient and can guarantee the fixing effect; a bag body containing analgesics is relatively convenient to replace; medical care personnel can conveniently nurse a wound in the achilles tendon skin of the patient; the device is quicker and more convenient to use; an adverse phenomenon of accidental breakage of a steel wire when two ends of the steel wire arearticulated to form a knotting articulated column can be effectively avoided; therefore, a trouble of secondary fixing of the wound in the achilles tendon skin of the patient is avoided; and particularly importantly, the patient can be prevented from a pain of the secondary fixing. The invention further discloses a use method of the device for fixing the achilles tendon skin. The recovery time ofthe patient can be effectively shortened.
Owner:THE FIRST PEOPLES HOSPITAL OF CHANGZHOU

Achilles tendon skin multi-section combined minimally invasive treatment external fixation bracket

The invention discloses a combined external fixation support for minimally invasive treatment of achilles-tendon-skin multi-section dividing, and relates to the external fixation support, in particular to an external fixation support for minimally invasive anastomosis treatment of the achilles-tendon-skin-multi-section-dividing divided end. As an existing fixing support has the defects that a secondary injury is easy to cause, a wound cannot be healed in a vitro anastomosis manner, minimally invasive operation cannot be used, and using is inconvenient, the external fixation support which is capable of avoiding a secondary achilles-tendon-divided-end pulling cracking injury, healing a wound in a vitro anastomosis manner, achieving minimally invasive operation, simple and easy to achieve isprovided. According to the combined external fixation support for minimally invasive treatment of achilles-tendon-skin multi-section dividing, a first part is a flat-threaded-rod adjustable hook clampcombination and used for external fixation of treatment of an achilles-tendon distal-end wound, a second part is an adjustable joint-linking-rod single hook combination and used for external fixationof treatment of an achilles-tendon proximal wound, and the flat-threaded-rod adjustable hook clamp combination is connected with the adjustable joint-linking-rod single hook combination through a linking-rod clamping block combination. The external fixation support is mainly applied to external fixation of an achilles-tendon-skin-multi-section-dividing minimally invasive surgery.
Owner:哈尔滨杰瑞斯医疗科技有限公司

Extraction method of bovine achilles tendon collagen

The invention discloses an extraction method of bovine tendo calcaneus collagen, and belongs to the technical field of biomedical materials, bovine tendo calcaneus pretreatment: soaking and unfreezing Y-shaped bovine tendo calcaneus at room temperature, cleaning the Y-shaped bovine tendo calcaneus with purified water, and soaking the cleaned Y-shaped bovine tendo calcaneus in a refrigerator at 4 DEG C for 24 hours; the method comprises the following steps: gently scraping and removing fascia on the surface of the bovine achilles tendon by using a scalpel, and performing pretreatment: continuing to soak the bovine achilles tendon without fascia in a refrigerator at 4 DEG C for 24 hours, freezing the bovine achilles tendon in a refrigerator at minus 20 DEG C, then slicing the frozen and hard bovine achilles tendon by using a slicing machine, weighing, and finally continuing to soak the bovine achilles tendon slices in the refrigerator at 4 DEG C for 48 hours. According to the method, the collagen is extracted mainly by combining acetic acid and pepsase, the collagen can only be degraded by collagenase, and other proteases cannot cut off collagen peptide chains, so that the pepsase can only cut off terminal peptides of the collagen and cannot cut off the peptide chains of the collagen; therefore, the finally extracted collagen can retain the complete triple helix structure.
Owner:NORTHWEST A & F UNIV +1

Three-dimensional achilles tendon minimally invasive suturing auxiliary apparatus

PendingCN112294379ARealize the three-dimensional suture routing structureImprove cut resistanceSuture equipmentsInstruments for stereotaxic surgerySuturing needleCalcanean tendon
The invention discloses a three-dimensional achilles tendon minimally invasive suturing auxiliary apparatus. The apparatus comprises a palm part, wherein a first auxiliary claw is formed on one side of the top of the palm part, a second auxiliary claw is formed on one side, away from the first auxiliary claw, of the top of the palm part, a first puncture needle is inserted into a first puncture groove, a second puncture needle is inserted into a second puncture groove, a first ball head is installed on the upper part of the inner wall of a third puncture groove, a first eccentric hole is formed in the bottom of the third puncture groove, a second ball head is installed on the upper part of the inner wall of a fourth puncture groove, a second eccentric hole is formed in the bottom of the fourth puncture groove, and a holding through hole is formed in the rear side of the outer wall of a handle. According to the apparatus, an angle and direction of a puncture channel can be adjusted, a three-dimensional suture routing structure is formed, and therefore the anti-cutting capacity is higher; the puncture needles adopt the eccentric holes corresponding to suture needles, the deflection is performed during puncture, a back-penetrating position of a suture is adjusted, a three-dimensional structure on the side face is formed again, and therefore the three-dimensional intersection is formed; and the holding through hole of a forceps is formed in the handle, so that the operation is convenient.
Owner:中国人民解放军联勤保障部队第九0四医院

A kind of extraction method of bovine Achilles tendon type I collagen

The invention belongs to the technical field of biomedical materials, and particularly relates to an extraction method of bovine tendon type I collagen. The extraction method comprises the following steps: washing fresh bovine tendons, removing fat, aponeuroses and muscles, cutting the bovine tendons into tendon blocks, soaking the tendon blocks with a sodium bicarbonate aqueous solution, cleaning, and airing to obtain pure bovine tendons; adding the pure bovine tendons in a triethanolamine-containing myristic acid solution for soaking, and cleaning and airing the soaked pure bovine tendons; adding the aired pure bovine tendons in liquid nitrogen, and grinding into powder to obtain bovine tendon powder; taking the bovine tendon powder, adding the bovine tendon powder in an acetic acid-sodium acetate buffer solution, adding pepsin and squalene, uniformly stirring, carrying out enzymatic hydrolysis, then adding glycol dimercaptoacetate, and carrying out oscillating reaction to obtain enzymolysis liquid; and carrying out salting-out and dialysis on the enzymolysis liquid to obtain the bovine tendon type I collagen. The preparation method provided by the invention is simple and the equipment requirement is low; and the obtained product is high-purity type I collagen with a triple helix structure, cannot cause mechanical injuries on nervous tissues, and is good in biocompatibility.
Owner:QIANFOSHAN HOSPITAL OF SHANDONG
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