786 results about "Retractor" patented technology

A dental mouthpiece is provided that may be attached to a high-suction dental adapter for the purpose of assisting the dental staff during dental procedures through chair-side, hands-free suction, and isolation. Such a mouthpiece may include a main body portion, a cheek retractor portion, and a suction connector portion. In some embodiments, the main body portion, cheek retractor portion, and suction connector portion (and sub-portions thereof) may be molded in one piece, preferably by injection molding. In an exemplary embodiment, the mouthpiece may be made of a material that is flexible, translucent, conducive to injection molding, high heat-resistant, and autoclavable. Such a material may include silicone. Because the mouthpiece may be made of a high heat-resistant and autoclavable material, such a mouthpiece may be reusable.

The invention discloses a joint dilator of an orthopedic knee arthroscope and a control method thereof, and relates to the technical field of medical instruments, the method comprises the following steps: acquiring a geometric center of a preset distraction range and a rotating fulcrum of the dilator, and constructing a preset Y axis according to the geometric center and the rotating fulcrum; when the spreader performs initial rotation by taking a preset Y axis as a rotation axis, the graph acquisition piece acquires an actual image contour in real time; comparing the actual image contour with the target image contour in real time; when the coincidence degree between the actual image contour and the target image contour is a second coincidence degree, the position of the preset Y axis is confirmed again according to the coincident contour between the actual image contour and the target image contour in the first coincidence degree, and an actual Y axis is set; the angle control device is combined with the actual Y axis to control the dilator, through the arrangement, it can be ensured that the dilated range of the dilator coincides with the range corresponding to the actual injury characteristic, and then the wound area of a patient is reduced.

The invention relates to the technical field of medical apparatus and instruments, in particular to an operation retractor which comprises four supporting arms, the four supporting arms correspond to one another end to end and are distributed in a rectangular shape, sliding holes are formed in the inner ends of the supporting arms, sliding boxes are slidably connected into the sliding holes, and sliding rods penetrate through the inner ends of the sliding boxes; a connecting piece is fixedly installed at the end, away from the supporting arm, of the sliding rod, a shifting plate is arranged below the connecting piece, rotating cylinders are arranged on the two sides of the supporting arm, driven cylinders are connected to the inner ends of the rotating cylinders, an adjusting cylinder is arranged at the end, away from the rotating cylinders, of the supporting arm, and an adjusting device used for controlling the motion trail of the connecting piece is arranged in the adjusting cylinder. Through synchronous movement of the four shifting plates, it is ensured that an incision is evenly and stably expanded, the exposure effect of an operation view is remarkably improved, meanwhile, the tissue damage risk is reduced, meanwhile, the driving plate can be directly adjusted according to actual requirements in an operation, linkage displacement of all the shifting plates is controlled in real time, and the tedious step that a traditional instrument needs to be adjusted one by one is omitted.

A modular retractor may include a first body portion that houses a distraction mechanism for opening and closing a first arm and a second arm. A first pivoting member may be coupled to a distal end of the first arm and a second pivoting member may be coupled to a distal end of the second arm, for example. A first pin receiving cannula may be coupled to the first pivoting member and a second pin receiving cannula may be coupled to the second pivoting member. The first and second pin receiving cannulas may receive a threaded pin therein and be independently inclinable. Various embodiments may include at least one quick connect coupler. During use, a first pin and a second pin may be secured to a first and second vertebrae for distracting and / or adjusting an angle of inclination of the first and second vertebrae.

A system for performing minimally invasive procedures in a body lumen of a patient including a flexible catheter having a first lumen configured and dimensioned to receive an endoscope therethrough and a second lumen configured and dimensioned to receive a first flexible tube therethrough. The first flexible tube is movable through the second lumen and has a distal portion including a first curve extending in a first direction with respect to the longitudinal axis and a second curve extending in a second different direction with respect to the longitudinal axis. A retractor system is positioned at a distal portion of the catheter and is movable from a non-expanded insertion position to an expanded position forming an expanded cage to form a larger working space. The distal portion of the first flexible tube is movable within the expanded cage.

A dental mouthpiece is provided that may be attached to a high-suction dental adapter for the purpose of assisting the dental staff during dental procedures through chair-side, hands-free suction, and isolation. Such a mouthpiece may comprise a main body portion, a cheek retractor portion, and a suction connector portion. In an embodiment, the main body portion, cheek retractor portion, and suction connector portion may be molded in one piece, preferably by injection molding. The main body portion has an anterior wall inside the curve and a posterior wall outside the curve, and an at least one connector connecting the anterior wall and the posterior wall. The main body portion has an anterior intervening wall and the posterior intervening wall in between the anterior and posterior walls. The anterior intervening wall and the posterior intervening walls have alternating crests and troughs.

The present disclosure describes a surgical retractor system and method. The surgical retractor includes an elongate element defining an operational axis, a first blade secured to the elongate element and comprising a blade face, a second blade moveably secured to the elongate element, wherein the second blade defines a reference point located thereon, and wherein a movement of the second blade moves the reference point in a linear direction parallel to the operational axis and orthogonal to the blade face. A guide element may be removably located within an opening located on either the first blade or the second blade.

The invention aims at providing a breast surgery retractor capable of avoiding skin scald, and relates to the field of medical surgical instruments, the breast surgery retractor comprises a fixing device, the fixing device comprises a first sliding rail, a supporting rod, a limiting stopper and a pressing plate, and the fixing device is used for adjusting the position and angle of the surgery retractor, so that the surgery retractor is more practical; the auxiliary device comprises a second sliding block, a second sliding rail, a third sliding rail and a first auxiliary drag hook assembly and assists the heat dissipation plate in traction, and the operation difficulty is reduced; the isolation device comprises a second auxiliary drag hook assembly, a traction rod, a shifting block, a sleeve, a connecting rod and a diaphragm, the skin can be isolated through the diaphragm, and the skin is prevented from being scalded due to heat conduction of metal. The problem that a metal drag hook easily scalds the skin is solved.

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.)

Improved methods and devices for performing an endoscopic surgery including a system for performing minimally invasive procedures including a flexible catheter having a first lumen, a first flexible tube positioned in the first lumen, and a second flexible tube positioned in the first lumen. The first lumen defines a first space configured and dimensioned to receive an endoscope. The first flexible tube and second flexible tube are fixed at a proximal portion and configured to float within the first lumen of the catheter. First and second flexible guides are slidably positioned within the first and second flexible tubes and dimensioned to receive a first instrument for axial movement therein, the first and second flexible guides movable to an angled position with respect to a longitudinal axis. A working space expanding system positioned at a distal portion of the flexible catheter, the working space expanding system movable from a non-expanded insertion position to an expanded position forming an expanded region to expand the working space within the body lumen.

The invention discloses a multifunctional operation drag hook for animal husbandry and veterinary, and belongs to the field of veterinarians, the multifunctional operation drag hook comprises an operating table, a moving table is assembled on the front side of the operating table, an electric sliding rail is assembled on the top of the moving table, an electric sliding block is assembled on the top of the electric sliding rail, and an electric telescopic rod is fixedly connected to the top of the electric sliding block; the top of the electric telescopic rod is fixedly connected with a drag hook. An extension plate is slidably connected to the inner wall of the drag hook, a sliding groove is formed in the front face of the drag hook, a limiting plate is fixedly connected to the left side of the inner wall of the drag hook, an extrusion block is fixedly connected to the bottom of the extension plate, and a first hydraulic assembly is fixedly connected to the inner wall of the drag hook. Skin tissue can be lifted and opened, the effect of tensioning the skin is achieved, and the operability of an operation area is improved by increasing the contact area of the drag hook and the skin. Particularly, linkage of an air bag, a first hydraulic rod and an extension plate is used, and the stability and the expansion effect of the skin tissue are further ensured through lifting and extrusion.

A retractor for use in surgical operations comprises a pair of blade assemblies. In operation, the blade assemblies are initially in a closed position 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 retractor is adapted to rotate a first blade about a first axis and a second blade about a second axis. The retractor is adapted to move the pair of blade assemblies apart along a third axis. The retractor is adapted to pivot the first blade about a fourth axis and the second blade about a fifth axis. In some embodiments, a method of performing an operation, e.g. a spinal operation, on a patient using the disclosed retractor is provided.

A retractor may include a proximal portion and a distal portion opposite the proximal portion. The distal portion may include first and second blade retractors each having a blade receptacle defined in a first end of a body. The blade receptacle has an opening that narrows to a seat for receiving a blade head, the seat defining a shape that reduces translation, rotation, and / or angulation of the blade head.

A tissue retractor for laparoscopic surgery according to the present invention is a device for retracting tissues including organs in the abdominal cavity during laparoscopic surgery. The device has a structure in which four bar-shaped main frames are connected to each other to form a rhombus shape, and the four vertices thereof can be folded or unfolded. Accordingly, when one pair of first vertices facing each other are completely folded and the other pair of second vertices are completely unfolded, the device becomes a straight line and can be inserted into the abdominal cavity via a trocar installed in a surgical incision.

A surgical retractor comprising a blade having first and second opposing surfaces, and a handle extending from a proximal end of the blade, wherein the first surface of the blade includes a non-slip texture having a preferential grip in a first direction corresponding to direction of extraction of the surgical retractor from an incision and having a minimal or no grip in a second direction opposite to the first direction and in a third direction transverse to the first and second directions.

The invention discloses an anterior cervical tissue exposure device for a neck operation. The device comprises a base, a cushion bearing mechanism and two traction mechanisms. A pillow plate of the cushion bearing mechanism is of a protruding plate structure matched with the anatomical structure of the posterior approach of the human neck, and comfortable neck support can be provided for a patient in cooperation with a pillow. A second supporting rod of the traction mechanism vertically stretches out and draws back, a mounting base rotates, and the opening and closing mechanism can drive side drag hooks to slide face to face or back to back through cooperation of a gear and a rack and arrangement of a limiting pin so as to meet the traction requirements of notches of different sizes. A first clamping plate on the base is adjusted to ascend and descend through a first threaded rod and used for fixing the device on an operating bed, a cushion bearing seat slides on the base and is limited, and the position of a traction mechanism on the pillow plate can be adjusted through a second threaded rod and other structures. According to the invention, the neck of a patient can be stably supported, the traction mechanism can be conveniently adjusted to fully expose an operation area, the convenience and accuracy of operation can be improved, and the requirements of different patients and operation scenes can be met.

Oral surgery collaborative surgical field exposure assistance surgical robot and control method, comprising two 6-degree-of-freedom robotic arms, two force-sensing surgical retractor assemblies and a main control computer. The force-sensing surgical retractor assembly includes a force-sensing surgical retractor, and there is a contact sensor inside the end cover plate of the force-sensing surgical retractor. The force-sensing surgical retractor is connected to the end of the robotic arm through a surgical retractor connecting piece. There are drag mode interaction and reference force adjustment interaction on the main control computer. The present invention is used to assist doctors in continuously retracting the surgical incision. The doctor only needs to place the surgical retractor at the initial position of the target area, input the reference retraction force on the interaction interface, and turn on the control system. The robot drives the force-sensing surgical retractor to safely and stably retract the surgical incision. For the convenience of doctors' operation and to ensure human-machine safety, the present invention has designed control strategies such as detailed modeling analysis, torque compensation, active retraction compensation, and safety threshold for the surgical retraction process.

The invention relates to the technical field of blood collection, in particular to a blood collection device for medical examination, which comprises a blood collection tube preprocessing module, a tourniquet binding module arranged above a placement platform and used for carrying out tourniquet on a patient and a vein recognition and positioning module used for recognizing and positioning veins of the patient, a circulating rotation disinfection module used for being in contact with the arm of the patient is further arranged in the placement platform; the tourniquet is tightened through the tourniquet retracting and releasing device, the pressure sensor can detect the compression force on the arm of a patient, automatic adjustment is achieved, manual binding is not needed, too loose and too tight conditions are not prone to occurring, the binding quality is ensured, the vein recognition and positioning module can recognize the vein position below the arm epidermis, infrared positioning is adopted, and the positioning accuracy is improved. The blood collection tube pretreatment module can automatically shake a vacuum collection tube after blood drawing is completed, it is ensured that an anticoagulant is mixed with a blood sample, and the blood sample quality is ensured.

The invention relates to the technical field of oral and maxillofacial surgery, and discloses an arc-shaped retractor for maxillofacial bone defect repair, which comprises a defective bone fixing assembly, the defective bone fixing assembly comprises two first titanium plates, the outer surfaces of the first titanium plates are integrally connected with first convex columns internally provided with screw holes, one ends of the first convex columns are connected with support plates through first medical screws, and the other ends of the first convex columns are connected with second convex columns through second medical screws; a plurality of rotating holes are formed in the outer surface of the support plate at equal intervals, rotating pins are rotationally connected into three of the rotating holes, and second medical screws are connected into the rotating pins in a threaded mode. The first titanium plate provides a reliable anchoring foundation for traction by means of biocompatibility and mechanical strength of titanium alloy, and the first convex column provides a supporting point for the traction assembly; a steel wire caulking groove and a limiting stop block ensure that the traction wire is stable and safe, and traction force is uniformly transmitted; the whole structure achieves accurate and controllable arc-shaped distraction osteogenesis, and the repair speed of the defective maxillofacial bone is increased.

The adjustable incision retractor comprises a fixed box, the left end of the top of the fixed box is movably connected with a movable frame, the right end of the movable frame is fixedly connected with a fixed frame, and the lower end of an inner cavity of the fixed frame is movably connected with a first screw rod through a bearing; the two ends of the first screw rod are in threaded connection with moving plates, retracting plates are fixedly installed on the surfaces of the moving plates, the right end of the top of an inner cavity of the fixing box is movably connected with a second screw rod through a bearing, and the upper end of the second screw rod is in threaded connection with a limiting frame. Through the arrangement of the limiting frame, the clamping plate, the second screw rod, the pedal, the pressing rod, the supporting spring, the air guide cylinder, the second one-way valve, the air bag, the push rod and the clamping plate, the effect of effectively clamping and fixing the whole body and an operating bed is achieved, displacement of the whole body caused by collision in the using process is avoided, and the using stability of the whole body is guaranteed.

A retractor for use in surgical operations comprises a pair of blade assemblies. In operation, the blade assemblies are initially in a closed position 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 retractor is adapted to rotate a first blade about a first axis and a second blade about a second axis. The retractor is adapted to move the pair of blade assemblies apart along a third axis. The retractor is adapted to pivot the first blade about a fourth axis and the second blade about a fifth axis. In some embodiments, a method of performing an operation, e.g. a spinal operation, on a patient using the disclosed retractor is provided.

The invention discloses a multipurpose surgical retractor assembly integrating illumination and image acquisition functions, and belongs to the technical field of surgical instruments. A multipurpose surgical retractor assembly integrating lighting and image collecting functions comprises a retractor working part, a retractor body connecting part and an operating handle part, a lamp body is fixed to the retractor body connecting part, a light source and a composite lens are arranged in the lamp body, the light source is an LED assembly, and the composite lens is a light-emitting diode (LED) assembly. The LED chips can be adjusted according to operation requirements to change the color and color temperature of mixed light so as to be suitable for illumination of different tissues, the outer edge of the composite lens is a concave lens, the center of the composite lens is a convex lens, the convex lens is arranged on the same axis, and an image sensor is arranged on one side of the convex lens. Uniform illumination can be achieved, the illumination range is expanded, and an operation area image is collected and amplified to be projected to a display screen. The invention aims to provide the surgical retractor assembly which has illumination and image acquisition functions and is light and convenient, so that the number of instruments required to be used in a surgery is reduced, and the surgical efficiency and accuracy are improved.

The invention relates to the technical field of medical instruments, in particular to a drag hook assembly facilitating abdominal tissue suturing, which comprises a drag hook, the drag hook comprises a drag hook head, a plurality of groups of shielding assemblies are arranged on the drag hook head, each shielding assembly comprises two shielding pieces, and each shielding piece comprises a rotating column and a baffle; the retractor head is further provided with a first cavity, a first piston is arranged in the first cavity, the first piston is connected with a first rod body, and the first cavity is communicated with a first inflation tube; the shielding assembly has a first state and a second state, when the shielding assembly is in the first state, the area between the two rotating columns is not shielded by the baffle, and the retractor head is of a toothed plate-shaped structure; when the shielding assembly is in the second state, the two baffles rotate to the area between the two rotating columns, and the drag hook head is of a toothless plate-shaped structure. According to the drag hook assembly facilitating abdominal tissue suturing, the purpose of improving the convenience of abdominal tissue suturing while the convenience of opening the abdominal tissue is achieved.

The present invention relates to an orthodontic appliance (1) adapted to fit the maxilla of a patient comprising A) at least one central retractor (2) incorporating an expansion screw (4) allowing its retraction and the subsequent retraction of the maxillary arch (MA) of the patient, which central retractor (2) is integral with: A1) A first symmetrical pair of posterior retention arms (5), each retention arm (5) being coupled to a ring (3) of a first pair of rings (3) allowing the appliance (1) to be fixed to the right and left permanent molars of the maxillary arch (MA) of the patient, at least one of the rings (3) also constituting the distal element of a distalization assembly (12) comprising at least two elements, A2) At least one symmetrical pair of anterior retention arms (8) which bears against the palatal surface of teeth anterior to the right and left molars to which the first pair of rings (3) are fixed right and left;A3) A second symmetrical pair of posterior retention arms (6), each retention arm (6) being formed of two distinct segments with a first segment coupled to a ring (3) of the first pair of rings (3) and a second segment coupled to the central spreader (2), which first and second segments are associated by a joint (7).

The utility model discloses an anatomical position retractor for carotid endarterectomy, which comprises two frames, the joint of the two frames is connected through two symmetrically arranged adjusting knobs, the outer surface of each frame is provided with a plurality of square clamping grooves, a first adjusting seat and a second adjusting seat are clamped in the plurality of square clamping grooves, and the first adjusting seat is connected with the second adjusting seat. Adjustable drag hooks are installed in the second adjusting seats, adjustable threaded rods are installed in the first adjusting seats, and claw-shaped muscle retractors are fixedly connected to the sides, close to the inner ring of the frame, of the threaded rods. By means of the structure, the frame part is provided with the clamping groove, and the hook can be installed according to the traction requirement of the surgical site; the position of the claw-shaped muscle retractor on the frame can be adjusted; a frame double-joint variable-angle design drag hook plays a role in tissue traction to expose an anatomical position in carotid endarterectomy.

A retractor for spine surgery includes a body. Left, right, and center retracting arms are coupled to the body. Left, right, and center blades are operatively coupled to proximal ends of the respective retracting arms. A retractor adaptor is configured to couple the retractor to a mount.

The invention relates to a retractor for oral and maxillofacial surgery. The retractor comprises a base plate, and front-back adjusting units, lifting units and distraction units are symmetrically arranged on the left side and the right side of the base plate; the front-back adjusting unit is fixedly connected with the base plate and used for adjusting the front-back position of the lifting unit. The lifting unit is used for adjusting the height of the opening unit; the opening unit comprises an arc-shaped guide rail, and the arc-shaped guide rail is fixedly connected with the lifting end of the lifting unit; at least one guide sleeve is slidably arranged on the arc-shaped guide rail, and the sliding direction of the guide sleeve is the arc direction of the arc-shaped guide rail; a hook rod is arranged on the guide sleeve in a linear sliding mode, the sliding direction of the hook rod is perpendicular to the tangent line of the sliding direction of the guide sleeve, and the hook rod is used for pulling the oral cavity lip. The locking structure I is used for relatively locking the guide sleeve and the arc-shaped guide rail, and the locking structure II is used for relatively locking the hook rod and the guide sleeve. According to the technical scheme, the adjustability is good, the hook rod serving as a consumable is convenient to replace, and the surgical requirements are better met.

The invention provides a distraction device and distraction equipment suitable for wedge high tibial osteotomy, and relates to the technical field of medical surgical instruments, the distraction device comprises a support, a first knife group, a second knife group and a first actuating part; the first cutter set is arranged on the support and protrudes out of the support in the first direction. The second cutter set is arranged on the support and protrudes out of the support in the second direction forming a first included angle with the first direction. And the first actuating part is configured to drive the bracket to rotate around the fixed shaft of the rotating shaft, so that the first knife group or the second knife group faces and extends into the bone seam. Wherein the thickness of the first knife group is configured to be smaller than that of the second knife group.

The invention relates to the technical field of medical instruments, and discloses an intelligent intervertebral dilator which comprises a transverse center shaft, a plurality of longitudinal shafts perpendicular to the center shaft are clamped on the center shaft side by side, distraction units are slidably connected to the positions, located on the two sides of the center shaft, of the longitudinal shafts respectively, each distraction unit comprises a sliding block, a distraction handle is connected to the lower portion of each sliding block, and the distraction handles are used for being inserted between adjacent vertebral bodies. A driving mechanism is arranged between the sliding block and the longitudinal shaft; the distraction unit located in the middle of the middle shaft is defined as a main distraction device, the other distraction units are defined as auxiliary distraction devices, a pressure sensor and a position sensor are arranged on the main distraction device, and a pressure sensor is arranged on each auxiliary distraction device; the device further comprises a control unit, and the pressure sensor, the position sensor and the driving mechanism are in communication connection with the control unit. The multiple distraction units are arranged to distraction intervertebral spaces synchronously, fracture caused by stress concentration during vertebral body distraction is avoided, pressure borne by the distraction units and the distraction height of the middle of the vertebral body can be monitored in real time, subjective judgment is avoided, and the distraction device is particularly suitable for osteoporosis patients.

The invention discloses a flap retracting device for an artificial cochlea electrode implantation operation. The flap retracting device comprises a pressing piece, a distraction assembly and a connecting assembly. The front end of the pressing piece and the front end of the opening assembly are movably connected through the connecting assembly so that the pressing piece and the opening assembly can rotate around the same rotating shaft, and then the included angle between the pressing piece and the opening assembly can be adjusted according to needs. The flap retractor further comprises a switch assembly, the switch assembly is used for controlling adjustment of an included angle between the pressing piece and the distraction assembly, when the switch assembly is in an open state, the included angle between the pressing piece and the distraction assembly can be adjusted, and when the switch assembly is in a closed state, the included angle between the pressing piece and the distraction assembly remains unchanged. According to the flap retractor, flaps around an incision are pulled open through the pressing part of the pressing part and the distraction fork-shaped part of the distraction assembly, the traction effect of the flap retractor is better than that of a drag hook, and therefore the surgical operation space and the surgical view can be enlarged.