74 results about "Iatrogenic injury" patented technology

The invention relates to a magnetic-navigation joint type puncture needle which comprises a head section and needle sections, wherein, the head section is made of stainless steel material with high magnetic conductivity and is connected with the following needle sections coaxially mounted with the head section through a flexible joint; two needle sections are also coaxially connected with each other through a flexible joint; the needle sections are made of non-magnetic stainless steel material; the flexible joints adopts serpentine tubes formed by melting and engraving cobalt-chromium alloy through laser; and both the head section and the needle sections can be bent, but the flexibility of the head section and that of the needle sections are smaller than the flexibility of the flexible joints. According to the invention, an extra magnetic field force is used to cause the head section of the needle to deflect, so that the following purposes can be achieved that the insertion direction of the needle can be changed, and the other needle sections also deflect with the deflection of the head section; accurate navigation for and control over puncture path and puncture position when the puncture needle performs a non-direct channel puncture in a human body; the puncture needle provided by the invention can reach niduses which other types of puncture needles can not reach; the application scope of minimally invasive surgery is expanded; iatrogenic injuries can be reduced; and patients can be benefited.

The present invention relates to a thoracolumbar vertebrae posterior false body which comprises a manual spinous process and a manual vertebral lamina. The manual spinous process is connected with the manual vertebral lamina, and the connection is shape as the connection of the spinous prcess and the vertebral lamina of human body pyramid. Compared with the prior art, the thoracolumbar vertebrae posterior false body can reconstruct the stability of thoracolumbar vertebrae and recover the physical structure and the physical function of thoracolumbar vertebrae posterior column, and can reconstruct the normal anatomical configuration and the function of vertebral canal, and can effectively avoid the possibility of the iatrogenic injury caused by vertebral canal content during operation; the thoracolumbar vertebrae posterior false body integrates spine fusion and non-fusion fixation functions as a whole, the fusion and non-fusion fixation functions are selected and used freely according to the requirement of the operation, and the operation is simple.

The invention relates to a soft palate traction device for a Davis mouth gag which belongs to a surgical medical instrument. The invention mainly solves the technical problems of easiness for enabling the mucosa of a nasal cavity to be damaged and easiness for causing the iatrogenic injury to the uvula of an existing surgical instrument. The invention adopts the technical scheme that the soft palate traction device for the Davis mouth gag comprises a compression spring, a traction plate, a fixing block, a traction plate positioning rod and a cover board, wherein the upper part of the fixing block is provided with a clamping groove installed on the Davis mouth gag; a flat slot for placing the traction plate is formed below the clamping groove; the lower part of the fixing block is provided with a cavity body; the center of the top surface of the cavity body is provided with a tooth hole communicated with the bottom surface of the flat slot; the traction plate is arranged in the flat slot of the fixing block; the traction plate positioning rod and the compression spring are arranged in the cavity body of the fixing block and a positioning clamping tooth of the traction plate positioning rod extends out of the tooth hole on the top surface of the cavity body to be matched with the sawtooth-shaped clamping groove of the traction plate; and the cover board is arranged at the bottom of the cavity body of the fixing block.

The invention provides an orthopedic direction-variable soft and hard integrated endoscope and a single approach control method. The endoscope is composed of an insertion part and an operation holding part, wherein the insertion part is in a thin and long tube shape, and the operation holding part is connected with an upper end base of the insertion part. The insertion part comprises a hard endoscopic sheath and a direction-variable flexible body which is placed in the hard endoscopic sheath, and one of the hard endoscopic sheath and the direction-variable flexible body is composed of multiple sections of continuous pipe fittings which are telescoping relatively; a soft lens image collection channel, a coaxial instrument operation channel and a water injection irrigation and attracting channel are formed in the direction-variable flexible body, at least two guide inhaul cables are connected to the side wall of the direction-variable flexible body, and the guide inhaul cables are connected to a guide disk arranged in the operation holding part; the operation holding part is provided with an image collector, the interior of the image collector is communicated with the soft lens image collection channel, a host is connected with the outside of the image collector, and the image collector is capable of displaying a three-dimensional image on a monitor. The orthopedic direction-variable soft and hard integrated endoscope has the advantages of being reasonable and compact in structure, convenient to operation, capable of skirting a shelter of the human tissue in a target operation field, capable of making observation free of blind areas and the iatrogenic injury small through complex anatomic spaces, good in observation effect and the like.

The invention relates to a passive homing type articulated puncture needle, which comprises a head section and needle sections. A wedged tip is formed at the front end of the head section, the needle sections are coaxially mounted at the back of the head section, the head section and the needle sections are made of stainless steel materials, the head section and the needle sections coaxially mounted at the back of the head section are connected by a flexible articulation, and the needle sections are also connected coaxially by flexible articulations. The flexible articulations are coils made of cobalt-chromium alloy by laser melting, two ends of each flexible articulation made of cobalt-chromium alloy are coaxially fixedly mounted with the needle sections and the head section in a jointing manner, the head section and the needle section can be bent, but flexibility of the head section and the needle sections is smaller than that of the flexible articulations. The passive homing type articulated puncture needle is capable of realizing accurately homing and controlling puncture path and position of the puncture needle when the puncture needle is used for non-straight puncture in thehuman body to reach the focus where the other types of puncture needles are hard to reach, so that the applicable range of minimally invasive surgery is expanded, Iatrogenic injury is reduced and patients are benefited.

The invention relates to the technical field of medical instruments, in particular to an inverse stretching type broken intramedullary nail extractor. The inverse stretching type broken intramedullary nail extractor comprises a sliding weight assembly, a working sleeve and an operating marrow core. The working sleeve is used for penetrating through an inner cavity of a broken intramedullary nail to reach the farthest end of the broken intramedullary nail. The operating marrow core is arranged in the working sleeve in a sliding mode, and an elastic clamping jaw for hooking the outer wall of the farthest end of the broken intramedullary nail is arranged at the free end of the operating marrow core. The sliding weight assembly is detachably installed at the end, away from the broken intramedullary nail, of the working sleeve. The working sleeve stretches into a marrow cavity and penetrates through the broken nail cavity to reach the farthest end of the broken nail, the operating marrow core stretches out of the working sleeve in a sliding mode, the elastic clamping jaw stretches out of the working sleeve and then pops up to hook the outer wall of the farthest end of the broken nail, and the sliding weight assembly stretches outwards to achieve extraction of the broken intramedullary nail. The inverse stretching type broken intramedullary nail extractor is simple in structure and high in operability, the clinical operation time is shortened, iatrogenic harm generated during operation is reduced, and the radiation damage to medical staff is greatly reduced.

The invention discloses a total knee replacement surgical robot assisted by laser osteotomy. The total knee replacement surgical robot comprises a control computer body. A core component of the robot is a laser cutting end effector. The robot further comprises a control computer body, a navigation positioner and a water spraying and air blowing auxiliary cutting device. The laser is a hard tissue laser which is different from a common laser light source and generates low heat during ablation of bone tissues; therefore, a laser beam with the diameter of only micron order of magnitude can conveniently perform accurate positioning and cutting depth control through computer control mechanical equipment, and can perform cutting in any geometrical shape, so that laser can perform more accurate osteotomy, less bone tissue is consumed during ablation cutting, and lower limb CT data of a patient can be acquired in advance; therefore, the cutting form is planned and designed before an operation, and a laser surgical robot is directly used for cutting after positioning during the operation, so that the time for installing an osteotomy guide plate in a traditional operation mode is saved; meanwhile, the medullary cavity is prevented from being damaged, and iatrogenic injury is reduced.

Devices, systems and methods for performing arthroscopic evaluations and procedures in and near the hip joint are provided. An arthroscopic assisted arthroplasty system is useful in the treatment of arthritic hip conditions, conserving healthy tissue, and limiting iatrogenic injury associated with traditional surgical exposures. A guide wire system employing retrograde and antegrade reamers along the femoral neck is useful in anatomic placement of instrumentation without formal hip dislocation. Fluoroscopy and computer assisted navigation enhance the system, methods, and apparatus. Acetabular and femoral collapsible prosthetic forms are useful in arthroscopic assisted placement. The devices, systems, and methods are effective to assist an operating surgeon in the addressing mild to moderate arthritic conditions of the femoral head and acetabulum where tissue conservation and surgical exposure morbidities should be limited.

The invention relates to an automatic syringe needle protecting and sealing integrated blood qi collecting needle. The automatic syringe needle protecting and sealing integrated blood qi collecting needle is provided with a syringe, a piston, a push-pull rod, a syringe needle and an outer sleeve. The syringe comprises a syringe seat and a syringe body. The syringe needle comprises a needle core and a syringe needle seat with a limiting convex ridge on the outer wall. When the automatic syringe needle protecting and sealing integrated blood qi collecting needle is not used and is assembled, thefar end section of the outer sleeve is located outside the syringe needle seat and the syringe seat, the near end section of the outer sleeve is located outside the syringe body, the far end of the needle core stretches out of an opening in the far end of the outer sleeve, and the near end of the syringe stretches out of an opening in the near end of the outer sleeve. When thrust is applied to the outer sleeve, the outer sleeve slides relative to the syringe. An anti-leakage film is arranged at the position, close to the opening in the far end, in the far end section, a barb convex ridge is arranged on the rear end side of the limiting convex ridge, and a check block is arranged at the connecting portion of the far end section and the near end section. The blood qi collecting needle is further provided with a film switch or maneuvering switch. According to the automatic syringe needle protecting and sealing integrated blood qi collecting needle, iatrogenic injuries can be avoided to the maximum extent, a blood sample is prevented from contaminating the environment, and the accuracy of the detecting result is improved.

The invention discloses a beating-pulling apparatus for a medullary cavity file. The beating-pulling apparatus comprises a main body, clamping handles and a medullary cavity file clamping head, wherein the main body is connected with the clamping handles; an elastic sheet is arranged in the clamping handles; the main body expands the clamping handles by pressing the elastic sheet; the clamping handles are also connected with the medullary cavity file clamping head through a shaft; and the medullary cavity file is tightly clamped by the medullary cavity file clamping head through the expansion of the clamping handles. The beating-pulling apparatus is stably and firmly connected with the medullary cavity file; in addition, the beating-pulling apparatus is simple to operate, and convenient to clamp, capable of being operated by a single hand, capable of rapidly assembling and disassembling the medullary cavity file, and has the advantages of capability of realizing stable and non-shaking clamping, high clamping force, and low probability of loosening; therefore, iatrogenic injury can be reduced to the minimum, the surgical time can be shortened, and a better surgical effect can be obtained, so that the beating-pulling apparatus can be used conveniently by a doctor as far as possible to reduce pain of a patient and secondary injury to the patient; and consequently, the operation can be accomplished in a quicker, more convenient and safer manner.

The invention discloses an intraoperative percutaneous fracture end temporary fixation and reduction device. The device comprises a first vertical fixing rod and a second vertical fixing rod which arefixed onto two broken bones separately, the first vertical fixing rod is provided with a first transverse rod, the second vertical fixing rod is provided with a second transverse rod, an arc disc isarranged between the first vertical fixing rod and the second vertical fixing rod and concentrically provided with a first arc guide groove and a second arc guide groove, the first transverse rod is slidingly inserted in the first arc guide groove, the second transverse rod is slidingly inserted in the second arc guide groove, and the arc disc is provided with angle scale marks matched with the first arc guide groove and the second arc guide groove. The invention further discloses an operation method of the intraoperative percutaneous fracture end temporary fixation and reduction device. Compared with the prior art, the intraoperative percutaneous fracture end temporary fixation and reduction device is reasonable in structure and high in positioning precision, the fracture end can be effectively fixed, the risk of re-displacement of the fracture end is reduced, the iatrogenic injury of repeated reduction in a simulated operation is reduced, the operation time is saved, the bleeding amount is reduced, and the pain of patients is reduced.

A percutaneous trigeminal nerve meniscus balloon compression device comprises a compression balloon catheter assembly, wherein the compression balloon catheter assembly comprises an expansion balloonand a supporting tube, and the expansion balloon is located at the end of the supporting tube; the supporting pipe comprises a framework and a pipe body. The support tube has the advantages that the skeleton is arranged in the support tube and is woven into a net shape by fibers, so that the support strength and the tensile strength of the support tube are enhanced; by means of the technical scheme, the balloon is prevented from being broken and losing efficacy or broken parts are prevented from remaining in the skull in the use process, and the risks of iatrogenic injury and infection are avoided.

The invention discloses an orthopedics-department knee-joint operative position fixing working table. The orthopedics-department knee-joint operative position fixing working table comprises a fixing base, a foot fixing unit, a downward-pulling connecting rod unit, an upward-lifting connecting rod unit, a joint pulling sliding unit and a tendon tension measuring assembly. The foot fixing unit, the downward-pulling connecting rod unit, the upward-lifting connecting rod unit and the joint pulling sliding unit are all in sliding connection with the fixing base. The orthopedics-department knee-joint operative position fixing working table is convenient to use, the knee joint can be conveniently fixed at any angle, a joint gap can be sufficiently and stably exposed, the stable operation state can be achieved, iatrogenic injuries can be reduced, and operation time can be shortened; ligament fixing tension is digitalized, and the ligament original-tension reconstruction function is achieved.

The invention discloses a medical ampoule bottle breaking aid machine, and belongs to the technical field of clinical care. The medical ampoule bottle breaking aid machine consists of a cylinder, a breaking aid machine cover and an ampoule clamping body barrel, wherein the ampoule clamping body barrel is arranged in the cylinder; the axis of the ampoule clamping body barrel is parallel to that of the cylinder; an ampoule clamping head barrel corresponding to the ampoule clamping body barrel in position is arranged on the breaking aid machine cover; a one-way upward valve is arranged at the lower end in the ampoule clamping body barrel; one-way downward valves are arranged at the upper end and the lower end in the ampoule body clamping barrel; a breaking aid machine arm and a fixed grinding wheel arm are arranged above the center of the breaking aid machine cover; the breaking aid machine arm is arranged above the fixed grinding wheel arm, and is fixed on the breaking aid machine cover; and a first slide knob and a second slide knob are arranged on the fixed grinding wheel arm. The device can be inserted into ampoules with different sizes and specifications for simultaneously breaking off the ampoules, so that the workload for breaking off the ampoules with hands by nursing staff is greatly reduced, and the hands are prevented from being injured by ampoule fragments during breaking-off of the ampoules with hands, thereby reducing iatrogenic injuries of the nursing staff, and enabling clinical nursing work to get twofold results with half the effort.

The invention discloses a nail anvil assembly used under a complete laparoscope, a guiding device and a surgical instrument, and relates to the field of medical instruments used under the laparoscope, the nail anvil assembly comprises a nail anvil umbrella, a nail anvil rod and an umbrella body contraction piece, and the umbrella body contraction piece can be controlled through external force so that the nail anvil umbrella can be unfolded or folded; under the condition that the nail anvil umbrella is folded, the radial size of the nail anvil umbrella is the same as that of the nail anvil rod, the nail anvil umbrella can effectively penetrate into the abdominal cavity of a patient through a laparoscope trocar and be placed into the gastrointestinal tract anastomotic stoma stump, so that a 3-5 cm incision does not need to be additionally formed in the position, close to the upper anastomotic stoma stump, of the patient, and the problem that more iatrogenic injuries are caused to the patient is effectively avoided; a fixing needle is arranged at the lower end of the nail anvil umbrella, after the nail anvil umbrella is placed into the anastomotic stoma stump end, the whole nail anvil assembly is rotated, the fixing needle can be inserted into the inner wall of the gastrointestinal tract anastomotic stoma stump end section, fixing of the whole nail anvil assembly is achieved, the process is rapid and accurate, and purse-string suture is not needed.

The invention discloses a medical transfer robot. The medical transfer robot consists of a rack, a forearm and a traction structure. The forearm is pushed under a patient by pushing the rack, when thepatient is supported, a drive mechanism is started to drive a cylinder to slide along a sliding groove until the cylinder gets close to the patient, a rotating mechanism is started and upwards tensions the cylinder, the cylinder is clamped in one clamping groove to have the effect of bearing tension received by the forearm, so that the effect of avoiding breakage of the forearm during transferring of the patient and iatrogenic harm to the patient is realized.

The invention discloses an arc-shaped guiding device for the minimally-invasive neuroendoscopy and a using method of the arc-shaped guiding device. The guiding device comprises an arc hard channel, and a steering soft aspirator and a soft minimally-invasive apparatus are put in the arc hard channel. The arc hard channel comprises a far-end opening, arc sections which are assembled by section, a funnel part, an outer wing and a near-end inlet which is connected with the funnel part, one ends of the arc sections are connected with the far-end opening, and the other ends of the arc sections are connected with the funnel part. According to the arc-shaped guiding device, in the using process, the spatial position of the guiding device does not need to be repeatedly adjusted, the surgical difficulty is lowered, the surgical speed is increased, iatrogenic injuries of the brain tissue, nerves, blood vessels and the like are significantly reduced, the occurrence of hematoma relapse, encephaledema, neurological function impairments and other complications in a perioperative period can be reduced, surgical injuries to the brain tissue, nerves and blood vessels are reduced to the greatest extent or removed, and the arc-shaped guiding device is suitable for endoscopic surgeries of various neurosurgery departments and otolaryngology departments.

The invention discloses a Minz deep tissue suture method and a structure and a use method of a Minz deep tissue suture instrument, and aims to provide a suture method for deep tissues or poorly exposed tissues, and a corresponding appliance. Through the invention, the suture of deep tissues is simple and easy to implement, and the suture success rate of the deep tissues is greatly improved; the requirements of a suture space and visual conditions are reduced, so that the incision expansion caused by increasing an operation space and improving the visual conditions is avoided, and the operative incision and exposed areas can even be shortened, and thus the iatrogenic injury is effectively reduced, and the complications caused by broken suture needles and other conditions are avoided.

The invention discloses a disposable lacrimal passage flushing device. The disposable lacrimal passage flushing device comprises a lacrimal punctum enlargement unit and a lacrimal passage flushing unit. The lacrimal passage flushing unit comprises a syringe pre-filled with flushing liquid, a piston and a piston pushing mechanism. The lacrimal punctum enlargement unit comprises a sleeve type flushing needle and a needle core, the left portion of the sleeve type flushing needle extends to the left out of the syringe, and a sealing ring on the middle portion of the sleeve type flushing needle divides the sleeve type flushing needle into left and right cavities. The needle core is disposed in the left cavity in a penetrating mode, and the right end of the needle core extends into the right cavity. The right cavity is internally provided with a needle core pushing mechanism, and a lacrimal punctum enlarging head at the left end of the needle core extends out of the flushing needle. A liquidoutlet hole is formed in the side wall of the syringe, and a liquid inlet hole is formed in the sleeve type flushing needle in a corresponding mode. The liquid outlet and inlet holes are located on the left side of the sealing ring. The disposable lacrimal passage flushing device has the advantages that the structure is simple, the operation is convenient, lacrimal puncta can be enlarged and a lacrimal passage can be flushed, and the disposable lacrimal passage flushing device is especially suitable for patients with narrow lacrimal puncta; and iatrogenic injury can be completely avoided, complications such as bleeding and false passages are reduced, and the safety is high.

The invention discloses a limb reestablishment shape righting adjustment controllable external fixation stent. The stent comprises a 360-degree angle shape righting nail clip, a stent axial up-and-down controllable adjusting nail clip, a stent unilateral controllable angle nail clip, a common nail clip and a guide rod. The stent is individually and randomly combined according to the specific conditions of patients by abiding by the mechanical principle, and the stent can meet requirements of any patient with limb malformation and be adjusted later. The stent can be pressurized, lengthened, rotated, bent and the like according to open comminuted fractures or bone defects. The stent is pre-placed after clinical assessment, the fractures can be later adjusted, the operation time is shortened, blood loss or iatrogenic injuries are reduced, and complex fractures are changed into simple fractures. Secondary operations caused by bone defects or force line deviations are reduced, the stability and flexibility of the external fixation stent are better exerted in fracture and shape righting treatment, the operation frequency of doctors is reduced, the operation time of the doctors is shortened, the cost of the patients is reduced, and the disease courses of the patients are shortened.

The invention discloses a disposable visualized brain puncture guidance device applied in an intracerebral hematoma evacuation operation during treatment of hypertensive cerebral hemorrhage. The device includes a puncture inner core assembly, a limiting sleeve pipe assembly and a handheld flushing cup joint assembly. The puncture inner core assembly is sleeved with the limiting sleeve pipe assembly, the limiting sleeve pipe assembly is in cup joint with the handheld flushing cup joint assembly through an oblique opening in the outer end of the handheld flushing cup joint assembly, and the puncture inner core assembly, the limiting sleeve pipe assembly and the handheld flushing cup joint assembly are all made of transparent materials; during puncture and the operation, the surrounding tissue can be observed clearly, the puncture success rate is increased, and iatrogenic injuries are reduced. By supporting a second adjusting arm, the direction and depth of a sheath tube in the skull canbe adjusted; the second adjusting arm can be externally connected to a medical S-shaped retractor for fixation. Secondary expansion can be achieved, and damage caused by excessive primary expansion isavoided. The device has the advantages of being visualized, high in flexibility and stability, capable of reducing damage of brain tissue, high in practicability, easy to operate, low in cost and thelike.

The invention discloses a visual-virtual-puncture-needle puncture navigation system. The visual-virtual-puncture-needle puncture navigation system comprises a visual virtual puncture needle, a navigation rail, a plane stretching arm, an image scanning device and a computer graphic processing display device. The visual-virtual-puncture-needle puncture navigation system has the advantages that the position relationship between the virtual puncture needle and punctured tissue can be visually displayed in advance before puncture operation, it is guaranteed that a puncture part is accurately selected accordingly, the puncture angle is accurately controlled, the puncture part is accurately positioned, the accuracy and the success rate of puncture operation are increased, accurate medical treatment is achieved, iatrogenic injuries caused by puncture operation are reduced, medical service efficiency is improved, and medical burdens are reduced. According to the visual-virtual-puncture-needle puncture navigation system, the puncture plane can be breezily locked, the position and angle of the navigation rail are freely adjusted, and it is avoided that the puncture needle is deviated from a preset puncture rail in the puncture process.

A biomarker detector used to detect and notify a user of a biological substance. More specifically, a biomarker detector coating layered on a surgical instrument that enables a user of the surgical instrument to know when a critical bodily fluid, such as cerebrospinal fluid, or critical tissue, such as nerve tissue, has been reached by the surgical instrument, thereby allowing the user to react accordingly and avoid iatrogenic injury.

The invention relates to the technical field of monitoring in tumor treatment, and discloses an ultrasonic real-time monitoring method of a tumor photo-thermal treatment range. The method includes thestep of monitoring and further includes the step of data quantifying and evaluating. In the step of monitoring, specifically, the tissue hardness of a focus region and surrounding normal tissue is monitored in real time through ultrasonic waves, and a two-dimensional tissue hardness distribution image is output in real time. In the step of data quantifying and evaluating, the output image is quantified and evaluated at intervals according to the two-dimensional tissue hardness distribution image output in real time, and the intensity and the range of photo-thermal treatment are recognized. The tissue hardness is used as a monitoring object, the hardness change of the focus region and the surrounding normal tissue is monitored in real time through the ultrasonic waves, the temperature andhardness change of lesion tissue and normal tissue is acquired, thus, the temperature and hardness change condition of the tissue can be found effectively in time, the power and the duration of near infrared light can be adjusted in time, and then the problem of iatrogenic injuries of the normal tissue is effectively avoided.

A biomarker detector used to detect and notify a user of a biological substance. More specifically, a biomarker detector coating layered on a surgical instrument that enables a user of the surgical instrument to know when a critical bodily fluid, such as cerebrospinal fluid, or critical tissue, such as nerve tissue, has been reached by the surgical instrument, thereby allowing the user to react accordingly and avoid iatrogenic injury.

The invention relates to a grid distal targeting device, comprising a distal targeting device and a grid device, wherein the grid device has a coordinate reference and is used for acquiring the position of an intramedullary nail for a user; the distal targeting device is used for distally targeting the intramedullary nail according to the position of the intramedullary nail acquired by the grid device. The invention also relates to a distal targeting method using the grid distal targeting device. By using the grid distal targeting device and the distal targeting method, the problem is solved that an existing interlocking intramedullary nail has difficulty in distal nail locking during surgical treatment of fractures; surgical difficulty is relieved, steps to mount and calibrate targeting instruments are fewer, surgical time is shortened, less radiation accumulates, and less iatrogenic injury is caused; the grid distal targeting device is simple in structure, easy to operate and good insafety and reliability.

The invention relates to the technical field of medical instruments, in particular to a reset guider, and aims at providing the reset guider which not only can perform pressurization, but also can perform reset, drives a guide needle into a bone block, measures the depths of screwed bolts, and finally fixes the bone block. The reset guider comprises a handle and a guider body, wherein a parallel pressurization device is arranged between the handle and the guider body, the guider body comprises a needle inlet guide assembly and a blocking head, and the needle inlet guide assembly and the blocking head are correspondingly arranged. The reset guider can assist in reset and more importantly can perform pressurization, so that the bone block is not separated any more, and fracture healing and the recovery of articular surface leveling are facilitated; repeated needle threading is not needed to avoid iatrogenic injuries; after pressurized fixation, the guide needle can be directly driven, the length is read, a first inner sleeve is taken out, a channel is drilled directly and hollowly, then a second inner sleeve is taken out, and a hollow nail with the measured length is directly screwed, thereby saving the operation time; since the length of the part entering the bone substance is the same as the automatic depth measurement scale, the measurement is accurate.

Compositions containing self-assembling peptides and / or self-assembling peptidomimetics (“self-assembling peptides”) can be used to create a long-lasting “lift” or means of elevating tissue to be resected, dissected, manipulated or repaired, as a bulking agent, or as a tissue forming matrix by injection of a solution that forms a solid gel in situ, which is stable for a prolonged period of time from days to a month, is hemostatic, and may prevent adhesions. These self-assembling peptides and methods of use thereof enable better separation of tissues and visualization of margins, more durable and robust lifts, less need for frequent injections that carry risk of undesired perforation, and simultaneous management of adverse effects, such as bleeding, leaking, inflammation and iatrogenic injury during endoscopic, laparoscopic or other minimally invasive, or open surgical procedures in and / or on the body.

The invention relates to a tapping drill bit for an orthopaedic medical inner and outer fixation instrument. The tapping drill bit comprises a three-claw annular gripper for maintaining reset bone fracture alignment and a tapping drill bit body for drilling a threaded bone hole in a bone fracture alignment position. The tapping drill bit is characterized by consisting of a drill pipe section, a tapping section and a drill bit section which are coaxial; each of the tapping section and the drill bit section is provided with trisection communicated spiral chip discharge grooves using the respective axial line as the center; and the outer diameter of a main cutting edge of the drill bit section is identical to the root diameter of thread marks of a screw tap. The tapping drill bit has the advantages that the iatrogenic injury on facial soft tissues by the drill bit can be reduced; meanwhile, the drill bit can be made into various different specifications so as to adapt to different patients; the pain of the patients is reduced; and the operation is fast and safe.