95 results about "Small incision" patented technology

A method of performing an operation, e.g. a spinal operation, on a patient using a retractor comprising a pair of blade assemblies which are adapted to open about a set of axes that are not parallel to a third spatial axis, and further comprising a pair of arms, which are adapted to move the pair of blade assemblies apart from one another in the third spatial axis. In the method, the blade assemblies are closed to assume a low profile, inserted into a relatively small incision, and stretched apart from each other, thereby stretching the skin about the incision to form an aperture longer than the incision. The blade assemblies are then opened by rotating the blades about the set of axes, stretching the skin around the incision in a second direction that is substantially perpendicular to the first direction (i.e. the direction of the incision.)

The invention belongs to the field of high polymer materials, and particularly relates to application of a polymer as an intraocular lens material and an intraocular lens. The polymer prepared by using the hydrophobic monomer, the hydrophilic monomer, the cross-linking agent and the initiator as raw materials is used as the artificial lens, and the obtained artificial lens can be water-triggered to harden, and has the advantages of foldability, small incision implantation, water absorption hardening after implantation, strong supporting property and the like.

The utility model relates to the technical field of medical apparatus and instruments, in particular to a heart valve forming ring implantation assembly which comprises a forming ring body which comprises an annular main body arranged in a chain type structure. The ring holder comprises a ring holding part, the ring holding part comprises a shell and a ring holding sleeve piece movably arranged at the lower end of the shell, the ring holding sleeve piece comprises a limiting block, a movable connecting part arranged at the upper end of the limiting block and a plurality of supporting rods arranged on the periphery of the lower end of the limiting block, and ring holding pieces are arranged at the tail ends of the supporting rods. The shell is provided with an operation assembly; and when the movable connecting part moves downwards, the plurality of supporting rods drive the ring holding piece to extend outwards. The forming ring can be adapted to forming ring bodies with various sizes; expansion of the valve ring cannot be caused, and the influence of the annular body on the valve ring in the contraction period is eliminated; the operation is simple and fast; a doctor can observe and use the device conveniently, more operation visual fields are provided, and the device is more suitable for small incision operations.

Implantable prostheses and related methods are generally described. In some embodiments, the prosthesis may be used for soft tissue reconstruction. The prosthesis may be formed from a three-dimensional load-bearing porous scaffold having interconnected networks of pores, thereby enabling tissue infiltration and allowing native tissue, blood vessels, and cells to colonize on the scaffold. In some embodiments, the scaffold may be formed from a biodegradable material such that it may degrade during the tissue infiltration process, leaving native tissue. In some embodiments, the stent may be formed from a triple periodic minimum surface, such as a helical tetracosahedron, to achieve high compressibility and high porosity. The compressibility of the implant may simulate the mechanical behavior of native tissue and allow the implant to be delivered through a small incision site (e.g., with an implant delivery funnel).

The invention belongs to the technical field of surgical instruments, and particularly relates to an incision retraction dilator for small incision deep tissue, which comprises a fixing mechanism, a fixing mechanism, a fixing mechanism and a traction mechanism, the expansion ring is arranged on the inner wall of the mounting block; the retraction mechanism is arranged at the top of the mounting block; the blood cleaning mechanism is mounted on the outer wall of the expansion ring, and the extension rod is arranged on the opposite side of the expansion ring; according to the retractor, the retractor mechanism is arranged, the end of the expansion assembly makes contact with an incision of a patient, the width of the expansion assembly is determined according to the size of the incision of the patient, the retractor is suitable for various different types of operations, the size of the position making contact with the incision is flexibly controlled according to the length of the incision, and the operation is more convenient. Compared with manual operation, expansion can be maintained more conveniently and stably through a mechanical means, and the requirement for the number of medical workers is reduced.

This invention discloses a spinal endoscopic screw-rod fixation system, belonging to the field of medical device technology. The system includes screws, locking pins, and connecting rods. The screw head has a fixing hole with internal threads on the inner wall and a driving hole at the bottom. The proximal end of the screw forms an arc-shaped mating surface around the fixing hole. The locking pin has external threads matching the internal threads, and a spherical clamping surface is formed on the side of the clamping head facing the connecting block. This invention, through the arc-shaped mating between the screw, locking pin, and connecting block, allows the connecting block to adapt to the screw at multiple angles, facilitating insertion and locking in spinal endoscopy or minimally invasive small-incision environments. The flip-handle mechanism facilitates tightening the locking pin in confined operating spaces and prevents arbitrary disassembly of the locking pin, improving the operational convenience and safety of the fixation system.

Methods are provided for aesthetic restoration and reconstruction of bone loss, deficit, defect, or a combination thereof. The methods include administration of one or more suitable bone derived compositions by a minimally invasive procedure such as injection using a needle, syringe, etc., placement in or through a small incision, or a combination thereof. The properties and characteristics of the bone derived composition, including without limitation, flowability, injectability, size, shape, and physical form, are limited only by the requirement that they are capable of administration by a minimally invasive technique. For example, these methods are effective for restoration of facial features, e.g., lost chin definition, jawline definition, bone around nasal lines, and bone around the upper and lower eye area. These methods are also effective for treatment of bone deficiency and loss in other body features such as shoulders and collarbones, pelvis, feet, ankles, hands, and wrists.

This invention relates to a novel detachable rib circumferential device, comprising a crossbeam and at least two circumferential arms. The crossbeam is made of a flexible and shapeable medical material, and its sides have positioning grooves corresponding to the number of circumferential arms. The circumferential arms are made of a material that automatically shrinks when heated, and their width is less than or equal to the width of the positioning grooves. This invention features an ingenious structure and reasonable design, allowing for easy and convenient insertion even through small incisions, simplifying surgical procedures and adapting to the current trend of increasingly minimally invasive surgical incisions.

The invention belongs to the technical field of medical instruments, and particularly relates to an artificial mitral valve suture-free automatic implantation device which comprises a catheter, one end of the catheter is fixedly connected with an opening and closing puncture mechanism, the inner wall of the catheter is fixedly connected with a pushing mechanism, a groove is formed in the outer surface of the catheter, and a filling solvent bag is installed in the groove; through the arranged opening and closing puncture mechanism, the opening and closing puncture head enters the human body with the minimum incision and then is expanded after entering the human body, the initial puncture point is extremely small, direct injury to tissues such as blood vessels and cardiac muscle can be reduced, the path of the automatically expanded needle head is more regular, important blood vessels, nerves or cardiac muscle tissues can be avoided, the accidental injury risk is reduced, and the working efficiency is improved. According to traditional implantation, a puncture channel possibly needs to be expanded in advance, an open-close type needle head is automatically expanded after entering, an additional expansion step is not needed, traction and extrusion on surrounding tissue are reduced, and the possibility of hematoma and infection after an operation is reduced.

The utility model relates to the technical field of corneal transplantation surgical instruments, in particular to a corneal graft implanter for corneal transplantation surgery, which comprises an implanter element, a connecting hose, a bottle cap, a bottle body and an injector, the bottle cap comprises a cap body and a push-pull plunger device, the push-pull plunger device comprises a plunger rod, a plunger and a plunger cylinder, and the plunger rod is connected with the connecting hose. One end of the plunger rod is fixedly connected with the cover body, the other end of the plunger rod penetrates through the top of the plunger cylinder in an airtight mode and is fixedly connected with a plunger matched with the plunger cylinder in the plunger cylinder, and a connecting pipe is arranged at the bottom of the plunger cylinder. And the connecting hose is used for connecting the top of the implanter element with the connecting pipe or the injection port of the injector. The implanter is used for pre-loading a donor cornea graft; the donor corneal graft is stored and transported to an operation position of a patient in a sterile mode and can be directly taken and used, and the donor corneal endothelial cell loss is avoided to the greatest extent in the receiving and implanting process of the donor corneal graft; meanwhile, a small-incision cornea transplantation operation is carried out through the implanter, and convenient transplantation is provided for ophthalmologists.

The small-incision minimally invasive steel plate comprises an end plate body and a rod plate body which are connected in a T shape, the end plate body is connected to one end of the rod plate body and bent towards the top face of the rod plate body, an insertion tip is formed at the end, away from the end plate body, of the rod plate body, and the insertion tip is connected with the end plate body. A first screw hole, a second screw hole and a third screw hole are sequentially formed in the surface of the rod plate body from the position close to the end plate body to the inserting tip end in the extending direction of the rod plate body and connected to a first screw, a second screw and a third screw correspondingly. The extending direction of the first screw hole is perpendicular to the surface of the rod plate body, the extending direction of the second screw hole and the extending direction of the third screw hole are inclined to the surface of the rod plate body, and the inclination angle of the third screw hole is larger than that of the second screw hole. According to the utility model, the incision only needs 1.5-2 centimeters, and the implantation is more suitable.

Valve holders and introducers for delivering a prosthetic heart valve to an implant site are in various embodiments configured to facilitate insertion of prosthetic valves through small incisions or access sites on a patient's body. The valve holders can also be configured to reduce or eliminate the occurrence of suture looping or other damage to the prosthetic valve during implantation. A valve holder according to embodiments of the invention includes features that reduce or eliminate mistakes during implantation of the prosthetic valves, such as a removable activator dial and a removable handle that prevent implantation of the valve prior to proper deployment or adjustment of the holder. An introducer is provided which can facilitate passing of a prosthetic valve between adjacent ribs of a patient. Valve holders and introducers according to the various embodiments can be used in minimally invasive procedures, such as thoracotomy procedures.

Mastopexy implants for breast lifts create new tissue planes in the breast that provide a more durable lift, and are particularly useful in breast lifts with a high content of fatty tissue; the implants can be implanted through small incisions using blunt dissection, reducing operating time, and providing a better aesthetic appearance with minimal scarring; the implants are designed to be temporary, and have sufficient retention strength to allow the new tissue planes to form and support the lifted breast without any significant loss of support during this regenerative period.

Embodiments comprise novel portacatheter structural extensions, wherein a core port with extensions more fully utilizes the port incision, is more stable in the pocket, and fits through the same incision versus the core port without extensions. Extensions resist port flipping by limiting rotation around the port long axis, which enhances the stability of a port with a broad base and permits the design of a stable port with a narrow or absent base. A narrow or absent base enables the port to fit through a small incision. Implantation is further enhanced by expanding the use of the Seldinger technique including the use of dilators and / or balloons in place of blunt dissection to fashion a subcutaneous pocket for a port. In embodiments, the back of the port comprises a closeable aperture, so that the entire portacatheter, with the port and catheter attached, can be inserted over a guidewire.

The utility model belongs to the technical field of medical treatment, and particularly relates to a small incision operation belt sleeving device which comprises a handle, an auxiliary shearing assembly is arranged on the outer wall of the handle, the handle is rotationally connected with a sliding rod, one end, away from the sliding rod, of the sliding rod is fixedly connected with a scissor body, and a threading hole is formed in the surface of the scissor body. According to the belt sleeving device for the small incision operation, due to the arrangement of the threading hole, in the operation, a doctor does not need to additionally use other threading tools, the operation that an operation line penetrates through the back face of a blood vessel can be completed directly through the radian of the scissor body and the threading hole, the position of the operation line is fixed through the threading hole, and treatment such as blocking of the blood vessel is achieved; the operation of threading, blood vessel bypassing, fixing and the like of the operation line is completed at a time, the operation process is simplified, and the operation efficiency is improved. Meanwhile, due to the design of function integration, the space occupied by surgical instruments in the thoracic cavity is reduced, and the surgical risk is reduced.

The application belongs to the technical field of surgical instruments, in particular to a small-incision deep-tissue incision retractor and dilator, which comprises a fixing mechanism, the top of the fixing mechanism is uniformly provided with a mounting block, a dilating ring is arranged on the inner wall of the mounting block, a retraction mechanism is arranged on the top of the mounting block, a blood cleaning mechanism is arranged on the outer wall of the dilating ring, an extension rod is arranged on the opposite side of the dilating ring, and the inner wall of a locking buckle is sleeved with the outer wall of the extension rod. The end of the dilating assembly is in contact with the incision of the patient through the arrangement of the retraction mechanism, the width of the dilating assembly is determined according to the size of the incision of the patient, the dilating assembly is suitable for various types of operations, the size of the contact position with the incision is flexibly controlled according to the length of the incision, compared with manual operation, the dilating is more convenient and stable by using mechanical means, and the number of medical staff required is reduced.

The utility model relates to the field of external fixators, and discloses a fibula unilateral external fixator which comprises a threaded column, the upper end of the outer surface of the threaded column is sleeved with an upper nut in a threaded mode, the middle of the outer surface of the threaded column is sleeved with a clamping block in a threaded mode, and a clamping groove is formed in one side of the lower end face of the clamping block. The lower end of the outer surface of the threaded column is sleeved with a lower nut in a threaded mode. In the utility model, in a surgical operation, a steel plate is usually used for treating a fracture through a screw, and the steel plate is fixed on a skeleton through a screw to provide stable support and promote the healing of the fracture, but the screw steel plate needs to be disassembled after being used, and meanwhile, the screw steel plate possibly causes injury to a patient when being disassembled; when the fibula unilateral external fixator is used, external fixation is convenient, the broken end of the fibula can be reset through a small incision or closing, the outer surface of the threaded column is sleeved with the upper nut and the lower nut, and the positions of the clamping block and the clamping piece can be adjusted when the upper nut and the lower nut are rotated.

The utility model belongs to the technical field of surgical instruments, and particularly discloses a double-opening double-joint multi-angle thoracic surgical instrument which comprises a first movable head and a second movable head, the first movable head and the second movable head are hinged to the end of a fixed rod through a first pin, one end of the first movable head is fixedly connected with a first forceps head, and one end of the second movable head is fixedly connected with a second forceps head. The other end of the first movable head is hinged to one end of a first pull piece, the other end of the first pull piece is hinged to a first head of a movable rod, the other end of the second movable head is hinged to one end of a second pull piece, the other end of the second pull piece is hinged to a second head of the movable rod, and sliding grooves are formed in the first head and the second head of the movable rod. A guide rail pin is fixedly arranged at one end, close to the pin I, of the fixed rod; two ends of the guide rail pin are slidably connected in the chutes of the head I and the head II of the movable rod respectively. Due to the double-joint design, the device is suitable for surgical operation under an endoscope and a small incision; and the double-opening-closing design is adopted, so that the surgical operation under an endoscope can be met, and the surgical operation under an open surgery can be completed.

Disclosed are co-polymers which are produced from reactive monomer mixtures and which have both high refractive index and a high Abbe number. These materials are well suited for use as implantable ophthalmic devices and have a refractive index which may be edited through application of energy. When used for an intraocular lens, the high refractive index allows for a thin lens which compresses to allow a small incision size.

The invention relates to the technical field of keloid resection, and discloses a minimally invasive surgery device for keloid core resection, which comprises a body, and further comprises an outer sleeve fixedly connected to the front end of the body, the outer sleeve is of a slender hollow structure and is used for being inserted into keloid tissues through a skin tiny incision; the inner cutting tube is coaxially arranged in the outer sleeve and can rotate relative to the outer sleeve, and an annular cutting edge used for cutting keloid fibrous tissue is formed at the far end of the inner cutting tube; according to the minimally invasive surgery device for keloid core excision, the outer sleeve and the inner excision tube are coaxially arranged, and the annular cutting edge used for cutting keloid fibrous tissue is formed at the far end of the inner excision tube, so that the device can enter the keloid through a tiny incision of the skin; on the premise of reducing skin wounds, effective treatment of keloid core tissues is realized, and improvement of postoperative healing effect and appearance recovery are facilitated.

The application discloses a laparoscope intestinal pressing plate with illumination function for small incision suturing, and relates to the technical field of surgical operation instruments.The laparoscope intestinal pressing plate comprises a rod body, which is hollow and has an elongated structure; a circular lifting disc, which is movably sleeved in the rod body; and a pressing plate assembly, which is connected to the bottom of the circular lifting disc and comprises at least two retractable supporting skeletons and a flexible film arranged on the supporting skeletons; and a push-pull rod, which is movably arranged on the circular lifting disc in an axial direction and extends to the outside of the rod body at the top end; the push-pull rod can drive the circular lifting disc to move in the axial direction of the rod body under the drive of external force, so that the supporting skeletons are radially retracted or expanded relative to the rod body; when the supporting skeletons are expanded, the flexible film is tensioned to form a pressing plate working surface for pressing an intestinal canal; and the laparoscope intestinal pressing plate is designed to be retractable and integrated with illumination, so that the instrument can conveniently pass through a small incision and provide local illumination and stable operation space in the body, and the safety and convenience of small incision suturing operation are improved.

Disclosed is a specimen retrieval device that utilizes a constricting mesh to assist with the contained retrieval of specimens during minimally invasive surgical procedures. The device can facilitate isolation and removal of specimens and allows the specimen to be removed through a smaller incision than a traditional extraction bag through constricting and elongating of the specimen by tension provided from pulling the specimen retrieval device and activating the inner woven fibers. The two-hole opening allows for optimal specimen orientation. In certain aspects the device is configured to disperse pulling tension over a larger area reducing the likelihood of specimen tearing during removal. Large specimens are safely reduced to an easily removable size and shape.

Disclosed are co-polymers which are produced from reactive monomer mixtures and which have both high refractive index and a high Abbe number. These materials are well suited for use as implantable ophthalmic devices and have a refractive index which may be edited through application of energy. When used for an intraocular lens, the high refractive index allows for a thin lens which compresses to allow a small incision size.

The utility model discloses a fusion cage for lumbar posterior fusion, which relates to the technical field of livestock breeding equipment and is technically characterized by comprising a fusion cage main body, and the fusion cage main body is of an upper arc-shaped double-arch structure and a lower arc-shaped double-arch structure. The fusion cage body is provided with a front end, a rear end, an upper surface, a lower surface, a left side face and a right side face, the front end of the fusion cage body is of a wedge-shaped structure, side holes are formed in the left side face and the right side face of the fusion cage body respectively, and textured tooth-shaped structures are arranged on the upper surface and the lower surface of the fusion cage. The upper arc and the lower arc of the lumbar fusion cage body are attached to a lumbar end plate, the front end ellipse facilitates oblique implantation, and the lumbar fusion cage is low in left and high in right and can rotate and stably support. The surface tooth-shaped textures increase friction, and the right-side forward-to-left reverse structure enhances stability. Biocompatible PEEK is adopted, and a developing needle is arranged to assist in monitoring. The minimally invasive concept is adopted, single-side small incision oblique planting rotation is adopted, injuries are reduced, the intervertebral height and spine stability are maintained, bone fusion is promoted, the operation effect is good, trauma is small, recovery is fast, and the clinical application potential is large.

This invention relates to a lens extractor with a rotating and retractable function, belonging to the field of medical device technology. It includes a handheld main unit and a disposable end-effector assembly connected via a quick-release interface. The handheld main unit has a built-in control and drive unit and operation buttons. The end-effector assembly comprises an outer sheath and an inner shaft tube arranged coaxially. The distal end of the outer sheath has a guide structure and connects to a retractable tube. The distal end of the inner shaft tube connects to a clamping module with multi-claw synchronous gripping function. During surgery, the clamping module first fixes the lens edge, then the rotating outer sheath, through its guide structure, forcibly curls the lens and wraps it around the inner shaft tube. Finally, the inner shaft tube retracts, pulling the rolled-up lens into the retractable tube, from which it is completely removed through the original small incision. This invention achieves integrated operation of stable gripping, controllable curling, and safe encapsulation of the lens within the eye, fundamentally avoiding the risks associated with enlarging the incision or dividing the lens intraocularly, significantly improving the minimally invasiveness and safety of the surgery.

A pupil expansion device for ophthalmic surgery includes a closed-loop ring body defining a central aperture and a plurality of flanges arranged circumferentially around the ring body. The flanges comprise non-folded flanges defining a plane of the device and folded flanges positioned alternately between the non-folded flanges. The folded flanges are connected to the ring body by notch regions and are movable between a resting configuration and an expanded configuration to enlarge the pupil. In one embodiment, the non-folded flanges, folded flanges, and notch regions are coplanar in the resting configuration. In another embodiment, the folded flanges are tilted posteriorly relative to the plane defined by the non-folded flanges by an angle between approximately 1 degree and 30 degrees. The device may be formed as a single-piece structure and is configured for use during ophthalmic surgical procedures, including manual small incision cataract surgery.

The system provides a method for surgically removing tissue through small incision sites and / or body openings. [Solution] The tissue containment and containment system includes a primary chamber, and a secondary channel extending from this primary chamber is interconnected with the primary chamber. A tissue specimen is placed into the primary chamber through a first opening 12 while floating in a body cavity. The first opening is drawn in through a first incision or body opening, and a narrower secondary channel is positioned at a second incision or body opening. A second opening 14 provided at the end of the secondary channel allows observation of the tissue specimen in the primary chamber, which is being cut through the first opening, by a scope inserted through the secondary opening. Other systems and methods are provided for sealing the second opening to create a closed system that enables deployment, containment, volume reduction, and safe retrieval of the tissue specimen.

A lens nucleus pre-chopping device suitable for micro-incision phacoemulsification surgery. The device's head and connecting rod can enter and exit the eye through a tiny 2mm incision. The device includes a connecting rod with a hollow tubular center and a Y-shaped dual-channel structure. The rear end of the connecting rod is provided with an elastic handle comprising an elastic sheet, one end of which is connected to the connecting rod shaft and the other end is a movable end. A wire structure is provided within the hollow tubular connecting rod, one end of which is connected to the movable end of the elastic sheet and the other end is split into two strands at the dual-channel structure to form a ring-shaped snare. The device is easy to operate and has a short learning curve. It can easily and thoroughly chop the lens nucleus, especially the hard nucleus, of a cataractous lens with minimal damage to intraocular tissue, greatly improving the efficiency and safety of the chopping process. This facilitates the smooth progress of subsequent phacoemulsification surgery.

This invention discloses a sampling and observation device and operating method for preliminary judgment of the natural resin formation of agarwood, relating to the field of guiding mechanism technology. It includes a main body, a sampling structure at one end of the main body, a pushing component at the end of the sampling structure away from the main body, and a sampling channel at the axis of the sampling structure. One end of the sampling channel is connected to the main body. The sampling structure includes a sampling component and a gripping part for sampling agarwood. The pushing component includes a pushing part, the outer diameter of which is the same as the inner diameter of the sampling channel. The sampling component allows for minimally invasive sampling of the agarwood tree, avoiding destructive sampling methods such as cutting down trees or drilling holes. Only a small incision needs to be made in the tree to obtain samples from inside the trunk. Furthermore, because agarwood is relatively viscous, the pushing part can push the sample inside the sampling channel into the main body, preventing the agarwood from clogging the sampling channel.