35results about How to "Avoid surgical failure" patented technology

The invention provides a mistaken-percussion-proof safety mechanism for an anastomat. The mistaken-percussion-proof safety mechanism for the anastomat comprises a fixed handle and a movable handle, wherein a clamping piece is arranged at the upper part of the movable handle, and a percussion locking mechanism is arranged on the fixed handle at the front side of the movable handle and is matched with the clamping piece; when the movable handle rotates forwards to be closed, the clamping piece is locked by the percussion locking mechanism; an unlocking mechanism for separating the clamping piece from the percussion locking mechanism is also arranged on the fixed handle. The invention also provides an anastomat, which comprises the mistaken-percussion-proof safety mechanism. The movable handle can be locked and cannot automatically reset after being closed for the first time, and the handle is in a closed state, so that the second percussion can be carried out after the handle is unlocked by operating the unlocking mechanism, and thus the failure of operation caused by misjudgment and mistaken percussion of doctors is avoided, and the correctness of operation sequence is ensured; meanwhile, appropriate tissues can be selected to be closed and cut by the doctors through a reset mechanism.

Disclosed is an orthopedic vertebra reduction device which consists of a reduction nut (1), a reduction rod (2) and a fixed rod (3). The back end of the fixed rod (3) is provided with screw thread which is matched with the reduction nut (1) and the side surface of the front end of the fixed rod (3) is provided with a plurality of ratchets. The reduction rod (2) is sleeved on the fixed rod (3); the front end of the reduction rod (2) is provided with gears. The invention is used to restore the isthmic spondylolisthesis, the invention can be used singly or used in cooperation with a pedicle of vertebral arc nail pulling method, and the operation can achieve better effect especially when the pedicle of vertebral arc nail path is damaged or when a patient suffers from osteoporosis. The invention which is simple in operation and powerful in reduction can complement the defect of the reduction method of the traditional orthopedic vertebra reduction device.

The invention discloses a bone tunnel cross pin positioning tool used in the department of orthopaedics and the application thereof. The tool comprises a bone tunnel center hole guider, a cross pin inlet guider, a cross pin inlet preboring needle, a cross pin inlet guiding sleeve, a cross pin inlet grasping stabilizer, an opposite-side bone thickness detection guider, an opposite-side bone thickness detection needle, a bone tunnel center preset confirming needle and a cross pin driver. By the adoption of the tool, perpendicular interlocking and expanding fixation of a cross pin at the center of the interior of a bone tunnel is achieved during ligament reconstruction in the department of orthopaedics.

The invention discloses a silicone oil extracting device for an ophthalmology department. The silicone oil extracting device comprises a negative pressure assembly for generating negative pressure and a extracting assembly for extracting silicone oil; the negative pressure assembly comprise a barrel body with a containing cavity and a piston and a piston rod which are arranged in the containing cavity; the extracting assembly comprises a catheter which is communicated with the containing cavity; the rod wall of the piston rod is connected with a push-pull part, a sliding groove is formed in the barrel wall of the barrel body, the push-pull part penetrates out from the sliding groove, and the push-pull part drives the piston rod to move in the axial direction of the containing cavity when the push-pull part slides in the length direction of the sliding groove; a limit groove which is communicated with the sliding groove and used for limiting movement of the push-pull part is formed in the barrel wall of the barrel body. According to the silicone oil extracting device for the ophthalmology department, the piston rod can be positioned reliably and effectively to prevent an operation from being failed, the pain of a patient is relieved, the structure is simple, and the operation can be conveniently operated.

The invention relates to an anal fistula plug which is insusceptible to dropping. The anal fistula plug comprises a circular table body implanting section, wherein the large end face of the implanting section is connected with one end of a plug body section; the other end of the plug body section is connected with a bottom surface of a cylindrical stitching area; the plug body section is formed by connecting more than two oblate spheroids; and the stitching area and the plug body section are made of a small intestinal submucosa or an allogenic biological material. According to the anal fistula plug, a plug body consists of a plurality of oblate spheroids, and the axial self-balancing of uniformly-distributed acting force to which the single oblate spheroid is subjected can be realized, so axial force generated by deformation stretching is generated on the integral plug body section only, and is balanced with 'rectal resting pressure' which acts on the large-end face side of the implanting section to avoid operation failure caused by the dropping of the implanting section. Numerical simulation indicates that the axial component force of the anal fistula plug under weight pressure can be reduced greatly, so that the anal fistula plug is prevented from dropping.

The invention discloses a lighting electric knife handle, and an electric knife handle, a negative-pressure suction tube and a negative-pressure pump which are used to attract the electric knife. A power supply circuit of the electric knife is arranged in the wall of the hollow electric knife handle or inside the hollow electric knife handle, and a suction port is arranged at the rear end of the electric knife handle. A conductive hollow tube is provided with a hollow channel, and the rear end of the conductive hollow tube is arranged inside the front part of the electric knife handle. The rear end of the conductive hollow tube is connected with the power supply circuit of the electric knife and the front end of the conductive hollow tube stretches out of the electric knife handle. The front end of the conductive hollow tube develops forwards to a thin pointed suction port. The invention provides the electric knife which can absorb all the smog generated during an operation, and as for the operation at a narrow and deep area, the electric knife can go in depth to absorb the smog generated during the operation and the liquid impurities beside the electric knife in time and discharge the smog and the liquid impurities to an outdoor place or into a sterilizer, which can not cause the blockage of the negative-pressure suction tube and the negative-pressure pump. As for the narrow dark area of the operation area, a lighting lamp on the electric knife can conveniently and clearly irradiate. The electric knife head, the electric knife handle, the negative-pressure pump can be conveniently and quickly dismantled, replaced and disinfected, and meanwhile, a filter screen and a filter can be conveniently replaced.

A glaucoma aqueous humor drainage device and a glaucoma aqueous humor drainage method, the switch of the valve is controlled by the change of the cavity pressure in the pressure valve, when the intraocular pressure exceeds 12mmHg, the valve is opened, and the valve is connected with drainage The tube drains the aqueous humor to the ocular surface, and relieves the patient's discomfort and dry eyes. It can effectively drain the aqueous humor and avoid scarring caused by the conjunctival flap embedding device and the generation of filtering blebs that lead to increased intraocular pressure and cause surgical failure. .