18 results about "Surgical removal" patented technology

The invention discloses a self-breaking outer drainage tube, and relates to the technical field of medical instruments, the self-breaking outer drainage tube comprises a tube body, and the tube body comprises a drainage part, a breaking part, a leading-out part and a puncture part; the drainage part and the fracture part are both made of degradable materials; the hole wall thickness of the circulation hole at the fracture part is smaller than the hole wall thickness of the circulation hole at the drainage part; during surgical operation, the degradable inner drainage part is placed in the pancreatic duct, the fracture part crosses the anastomotic stoma by 7-8 cm and crosses the biliary-intestinal anastomotic stoma, and the leading-out part walks in the enteric cavity to a proper position, penetrates out of the intestinal wall and is led out of the body through the abdominal wall. Cutting the puncture part to expose the outlet of the circulation hole, and discharging the body fluid through the circulation hole; after a certain period of time after the operation, the fracture part is automatically fractured under the action of pancreatic juice, the leading-out part is pulled out, the degradable drainage part continues to be degraded in the body and maintains the drainage function, and finally the drainage part is absorbed by the body or discharged out of the body without being taken out through the operation.

Methods of reducing oxidative damage to an eye of a subject are provided. Aspects of the method include intravitreal injection an antioxidant composition consisting essentially of a non-reducing sugar or a hydrate thereof. In some embodiments, the non-reducing sugar is trehalose. The methods can further include surgical removal of at least a portion of the subject's vitreous humor during a vitrectomy. Also provided are ophthalmic compositions, kits and pre-loaded injection devices for use in vitrectomy surgery which find use in the subject methods.

The utility model discloses a poly (p-dioxanone) medical suture with an anti-inflammation capsule, and relates to the technical field of medical sutures. The protein anti-inflammatory suture line comprises a suture line inner core, a protein adhesive layer, a protein microcapsule and anti-inflammatory drug particles, wherein the suture line inner core is made of a PPDO material. According to the utility model, the anti-inflammatory drug of the wound can be fully and comprehensively absorbed; the inner core of the suture line has good compatibility, and rejection and tissue inflammation are reduced; the suture line can be gradually degraded in the body and finally converted into carbon dioxide, water and the like, and the carbon dioxide, the water and the like are naturally discharged by the human body and do not need to be removed through a secondary operation, so that the infection risk possibly caused by the secondary operation is reduced, and the infection risk is reduced; the suture line has long strength maintenance time and can provide continuous support for the wound until the tissue is healed; the protein microcapsules and the anti-inflammatory drug particles are beneficial to reducing inflammatory reaction.

FIELD: otorhinolaryngology.SUBSTANCE: under endotracheal anesthesia, an endoscope equipped with optics and an instrument for removing pathological contents of the maxillary sinus are inserted into the nasal passage. The inferior nasal concha is displaced medially using a raspatory. Then, stepping back from the edge of the piriform opening by 1.5–2.0 cm in the caudal direction, a mucoperiosteal flap of the lateral wall is separated in the lower nasal passage. The mucoperiosteal flap is displaced posteriorly, exposing the bone skeleton in the projection of the inferomedial angle of the maxillary sinus. Next, using a cold plasma coblator, in ablation mode, the mucous surface of the bone skeleton is evaporated for 2–3 seconds, followed by coagulation of small vessels. Then, a bone valve measuring 10–15 mm is formed from the exposed bone skeleton. The bony valve is retracted in the caudal direction, forming an antrostomy. A 70-degree endoscope is inserted through the formed antrostomy and the pathological contents of the sinus are visualized. In this case, if the cyst is visualized with a coblator in ablation mode, the cyst is evaporated along with its contents, and the remaining cyst is captured and removed. If a polyp is visualized, the polyp stalk is first evaporated, and then the remaining part of the polyp is removed. If a foreign body is visualized, it is removed with forceps. In this case, if the foreign body is encapsulated or located in the thickness of the mucosa, a coblator in ablation mode evaporates part of the mucosa until the foreign body is exposed, and then removed. Next, the sinus cavity is washed with saline solution. The antrostomy is closed with a bone flap. The formed mucoperiosteal flap is placed back in its original place.EFFECT: method allows for endoscopic endonasal removal of pathological contents from the maxillary sinuses with a minimal risk of cyst / polyp recurrence and postoperative complications, reduced blood loss during surgery, shortened surgical time, postoperative rehabilitation periods, and temporary disability.3 cl, 3 ex

The utility model relates to the technical field of dental nails, in particular to a degradable biological tent nail for increasing dental implant bone, which is made of biodegradable materials and comprises a threaded portion, a tent cap and a self-tapping tip, the tent cap and the self-tapping tip are arranged on different sides of the threaded portion, and the self-tapping tip is connected to the end of the threaded portion. The thread part is connected with the tent cap through a connecting part, a hollow part is reserved in the tent cap for filling and observing the height of bone meal, and an assembling groove is reserved in the tent cap for screwing operation of a screwing screw part. According to the degradable biological tent nail for increasing the dental implant bone, the degradable polylactic acid bone nail does not need to be taken out after the dental implant bone is increased and healed in clinical use, so that the operation cost is reduced; the hollowed-out design of the top of the tent nail facilitates observation of the height of bone meal, and the clinical operation efficiency is improved.

The present invention provides a device for gallstone surgical removal, which belongs to the field of medical device technology. It includes a minimally invasive channel, a puncture needle tube is inserted into the minimally invasive channel, a support tube is inserted into the puncture needle tube, one end of the support tube is fixedly connected to a handle, the other end of the support tube is fixedly connected to an expansion port, a fixing plate is fixedly connected to the outer wall of the support tube, three sliding blocks are fixedly connected to the inner wall of the expansion port, two support frames are fixedly connected to the top outer wall of the handle, and a through hole is opened on the handle; the clamping component is used to clamp the gallstones in the patient's gallbladder, and the cutting component is used to cut up larger gallstones in the patient's gallbladder. By setting up the cutting component, the present invention allows doctors to cut up large gallstones in the gallbladder. If large stones are not cut, the operation time may be prolonged or the incision on the outer wall of the gallbladder may be torn, affecting postoperative recovery. Using the cutting component, doctors can directly cut stones when clamping, without changing tools, thereby reducing operation time.

The utility model discloses a minimally invasive surgery taking-out device and a taking-out system. The taking-out device can comprise a passage piece, a fixing clamp and a cutter. Wherein the access piece is used for establishing a surgical access for surgical operation; the fixing clamp and the cutter can be used for extending into the surgical access and extending out of the far end of the access piece; the fixing clamp is used for fixing and clamping the cut target extraction object, and the cutter is used for cutting the target extraction object and taking out the cut target extraction object through the fixing clamp. On one hand, compared with a plurality of operation channels, the taking-out device has the advantages that the operation risk is reduced through one operation channel; on the other hand, the object is fixedly clamped and taken out through the fixing clamp, so that the object to be taken out is firmly clamped, the risk that a filter screen is not used for filtering thoroughly is also avoided, and the operation safety is enhanced; and thirdly, the fixing clamp and the cutter are matched for operation, so that the operation precision is improved.

Provided herein are methods for the surgical removal of lung cancer tissue using CXL, a near-infrared fluorescent imaging agent. This approach involves administering a pharmaceutical composition containing CXL intravenously to a patient, detecting a fluorescence signal emitted from lung cancer tissues, and surgically excising the identified cancerous tissue. Administration doses may range from about 0.001 mg / kg to about 0.10 mg / kg, occurring between up to 4 days and about 1 hour before imaging. The method supports endoscopic imaging and surgeries, including thoracoscopic lung tissue resection, intraoperative visualization, and histopathological evaluation to confirm tissue removal. Exclusion criteria cover hypersensitivity history, renal impairment, and specific laboratory markers exceeding defined limits.

This invention discloses a powder composition for the prevention and treatment of symblepharon (eyelid-eye-ball adhesion). The powder composition comprises a polymer material that cross-links with each other upon contact with an aqueous medium, forming a hydrogel isolation membrane in situ at the wound surface. This invention also discloses the application of the above-mentioned powder composition in the preparation of medicaments for the prevention and / or treatment of symblepharon. The powder composition provided by this invention, when applied to ocular surface wounds, rapidly forms a physical isolation layer in situ. This formed physical isolation layer exhibits good stability and can be gradually and gently degraded without the need for secondary surgical removal.

A striking apparatus and method is described for enhancing the surgical removal of medical devices, such as surgical screws and the like. The striking apparatus may include an elongated body that may include an annular distal end, a neck extending from the elongated body; and a fastener extending from the neck. The elongated body may include a first tapering portion extending from the annular distal end and a second tapering portion extending from the first tapering portion. The first tapering portion may be an annular first tapering portion. The striking apparatus may detachably couple with a medical extractor, thus providing additional force to the extracting mechanism provided by the extracting tool.

An endoscopic vessel harvesting system for surgical removal of a blood vessel to be used for coronary bypass uses endoscopic instruments for isolating and severing the vessel. An endoscopic camera in the endoscopic instruments captures images from a distal tip of the instrument within a dissected tunnel around the vessel. An image processor assembles a three-dimensional model of the tunnel from a series of images captured by the endoscopic camera. An augmented-reality display coupled to the image processor renders (e.g., visibly displays to the user in their field of view) a consolidated map representing the three-dimensional model along with a marker in association with the map indicating a current location of the distal tip.

A system for evaluating the efficacy of honey and hydrogel in the treatment of diabetic foot ulcers in patients with type 2 diabetes mellitus, comprising: a) a wound preparation unit configured for the surgical removal of necrotic tissue and calluses in diabetic foot ulcers; b) a topical treatment unit configured to apply at least one therapeutic agent selected from the group consisting of honey gel, hydrogel, a combination of honey gel and hydrogel, or topical antibiotic ointment to the wound bed; c) a relief unit configured to provide pressure relief devices for the ulcer site; and d) a monitoring unit configured to measure wound size and track healing progress at predetermined intervals.

A striking apparatus and method is described for enhancing the surgical removal of medical devices, such as surgical screws and the like. The striking apparatus may include an elongated body that may include an annular distal end, a neck extending from the elongated body; and a fastener extending from the neck. The elongated body may include a first tapering portion extending from the annular distal end and a second tapering portion extending from the first tapering portion. The first tapering portion may be an annular first tapering portion. The striking apparatus may detachably couple with a medical extractor, thus providing additional force to the extracting mechanism provided by the extracting tool.

Synthetic thrombus model for learning the surgical removal of a blood clot from a blood vessel using mechanical thrombectomy in a simulation of various stroke scenarios in a training model, which simulates a lifelike shape with a realistic feel of a human blood clot thereby that an elongated base body based on an elastically deformable main material with a Shore A hardness in the range of 0 to 10 is provided, the property profile of which at least with respect to hardness and fragmentation is improved by providing a material combination of the main material with at least one addition of an adhesive with 5 to 40 wt.-% and / or with a reinforcing material.

The utility model provides a rotary cutting assembly and a thrombus removing device, and belongs to the field of vascular surgery removing instruments. The rotary cutting assembly comprises a supporting ring, a guide pipe arranged in the supporting ring, a cutter piece connected between the supporting ring and the guide pipe and a driving pipe, the supporting ring is of a hollow structure, the cutter piece comprises a plurality of linear cutters arranged in parallel, and a smashing gap for cutting and smashing thrombus blocks is formed between every two adjacent linear cutters; the multiple cutter parts are arranged and radiate towards the supporting ring with the guiding pipe as the center, every two adjacent cutter parts form a thrombus outflow channel, and the driving pipe is connected with the guiding pipe. According to the utility model, thrombus can be effectively prevented from blocking the catheter. The thrombus removing device comprises a rotary cutting assembly, a driving tube, a catheter and a guide wire. The rotary cutting assembly is rotatably arranged in the catheter in a sleeved mode, and the guide wire is rotatably arranged in the rotary cutting assembly in a sleeved mode. The thrombus can be removed and discharged out of the catheter, and the situation that the thrombus adheres to the inner wall of the catheter is effectively reduced.

Provided are methods of removing hemorrhagic blood from a body region of a patient, such as from the brain. The methods can include recording X-ray images of the body region and the blood, thereby allowing for the selection of a desired trajectory from the surface of the body to the blood. A sheath is inserted into the body along this desired trajectory. The sheath can have X-ray visible fluoroscopic markers that help ensure correct three-dimensional orientation of the sheath during insertion. Afterwards, the hemorrhaged blood can be removed through the open, internal lumen of the sheath. Also provided are blood removal devices that can be inserted into the sheath, thereby helping to remove the blood from the patient. Such devices can have a cutting element that cuts the solidified blood, thereby aiding in its removal from the patient.

The present invention relates to the field of medical technology and discloses a gallstone surgical removal device, including: an operating tube, one end of the operating tube is connected with an insertion tube, a partition disc is fixedly sleeved in the middle of the inner cavity of the operating tube, and a stone clamping assembly is arranged in the inner cavity of the operating tube. After the stone clamping assembly clamps the stone, the stone clamping assembly can bring the stone into the inner cavity of the operating tube. Since a stone limiting assembly is arranged on one side of the inner cavity of the operating tube, the stone squeezes the contraction plate and the second spring, so that the stone enters between the stone clamping assembly and the partition disc. Then, by using the reset of the second spring, it is convenient to limit the stone between the stone limiting assembly and the partition disc, so that multiple stones can be temporarily stored in this removal device, which is convenient to take multiple stones at one time when this removal device enters the gallbladder, and avoids the removal device clamping the stone multiple times and entering and exiting from the gallbladder wound, causing damage to the wound.

This utility model relates to a visual retractor system specifically designed for surgical removal of orbital septum fat in eye bags, belonging to the field of medical device technology. It includes a main retractor and a pair of auxiliary retractors. One end of the main retractor has a main hook body, and one end of each of the pair of auxiliary retractors has an auxiliary hook body. The pair of auxiliary retractors are mounted on the main retractor, with the auxiliary hook bodies at one end distributed on both sides of the main hook body. The pair of auxiliary retractors can be moved relative to each other, either so that the auxiliary hook bodies are close to the main hook body from both sides, or so that they are far away from the main hook body from both sides. A camera system is installed on the main retractor near the main hook body. Advantages: The structure is rationally designed, allowing the main hook body to pull open the lower eyelid while the pair of auxiliary hook bodies simultaneously pull apart the orbital septum fat and tissue, exposing the internal space of the orbital septum to the field of view of the camera system, thus facilitating the surgeon's removal of the orbital septum fat and tissue.