10 results about "Balloon dilation" patented technology

This invention discloses a pre-positionable artificial bioprosthetic valve implantation system, comprising: a pre-positionable artificial bioprosthetic valve, a valve holder, and a delivery mechanism. The valve includes a support and three leaflets; the support has a valve seat, an anchoring seat, and three anchoring blocks. The anchoring seat is a balloon-expandable annular metal seat, and the three anchoring blocks correspond to the positions of the leaflet struts. The support has a first state and a second state: in the first state, the anchoring block area is radially concave, and its outer diameter is smaller than the outer diameter of the valve seat; in the second state, the anchoring seat expands into an annular shape, and the outer diameter of the anchoring blocks is larger than the outer diameter of the valve seat, forming a three-point mechanical anchoring. The valve holder is sutured to the ends of the three leaflet struts. The second connecting seat of the delivery mechanism engages with the valve holder, and the axial height of the cylindrical balloon in its expanded state is consistent with the height from the valve holder to the anchoring seat. This invention, through its zonal design and precise balloon alignment, achieves rapid valve anchoring and uniform expansion, significantly improving surgical safety and valve functional reliability.

The invention discloses a steady state judgment method and system for an intracranial artery stenosis balloon dilatation, which are used for solving the problem that the prior art depends on subjective experience and lacks quantitative criteria. The method comprises the following steps: synchronously acquiring a balloon perspective image and system pressure data in real time; extracting the minimum inner diameter (D) and the pressure (P) of the balloon; continuously calculating the instantaneous change rate (V) of D and P and the trend change rate (S) based on the time window by taking the change rate percentage per second (% / second) as a unified dimension; and based on the steady-state threshold (theta f) and the steady-state threshold (theta s), rapid steady-state judgment is performed after pressurization pause, and continuous steady-state judgment is performed in the maintenance stage. The system comprises various functional modules for realizing the method. The judgment result is subjected to silent feedback by changing visual attributes such as an instantaneous change rate curve and the like. According to the method, conversion from experience driving to data driving is achieved, objective decision support is provided for individualized precise expansion, and the purpose of synchronously improving operation safety and efficiency is achieved.

The application provides a balloon dilatation device for osteotomy, and belongs to the technical field of medical instruments.The balloon dilatation device for osteotomy comprises a handle part, an injection inlet, balloon bodies A and B, and the injection inlet is arranged on one side of the handle part, and the balloon bodies A and B are connected with the handle part respectively.Two balloon bodies that can be independently or synchronously controlled are arranged, and the relative size of the front and rear gaps of the osteotomy surface can be accurately and flexibly adjusted.The working principle is that fluid is injected into the front and rear balloons respectively, and the differential expansion of the front and rear gaps can be realized.This design enables doctors to adjust the tibial plateau posterior slope angle to the ideal angle according to the accurate requirements of the surgical plan, and the adjustment can be completed only by controlling the expansion degree of different balloons, thereby realizing the fine and one-time control of the three-dimensional spatial form of the osteotomy, and effectively avoiding the problems of precision deviation and low surgical efficiency caused by repeated manual adjustment of traditional instruments.

The utility model discloses a minimally invasive degradable digestive tract anastomosis stent through a natural orifice, which comprises a stent main body, the stent main body has compressibility, is a balloon expansible or self-expandable stent, is made of degradable materials, and is small in the middle and relatively expanded at two ends. A plurality of barbs are arranged at the two ends of the stent main body, when the stent main body is compressed, the barbs can be attached to the outer wall of the stent main body, and when the stent main body is unfolded, the barbs can be unfolded towards the outer side. The barb structures are arranged at the two ends of the stent body, the stent body can be fixed more firmly after the balloon is expanded, it can be ensured that an anastomotic stoma can be kept stable after an operation, and the risk of fistula formation is reduced.

The present disclosure describes a prosthetic surgical heart valve for smaller patients, particularly pediatric patients. The heart valve is smaller and more flexible, and can incrementally expand to accommodate growth of the patient. The heart valves are particularly useful at pulmonary valve locations where opening and closing pressures are much lower than at other native valve locations. The heart valves are formed from a thinner and more flexible material than the aortic or mitral valve, which enables them to be opened and closed more efficiently when subjected to lower pulmonary blood flow pressures. Incremental expansion of the heart valve is achieved by a stiffener coupled to plastic expansion of the valve member.

This invention discloses an artificial bioprosthetic valve stent, a pre-positionable artificial bioprosthetic valve, an implantation system, and its application. The artificial bioprosthetic valve stent may include: a valve frame, a valve seat, an anchor seat, and three anchor blocks fitted on the anchor seat; the valve frame has three leaflet supports; the valve seat is an annular metal seat, with the valve frame embedded above the valve seat and sutured to the valve seat through a covering; the anchor seat is a balloon-expandable annular metal seat, located on the side opposite to the valve frame and sutured to the valve seat through a covering; the three anchor blocks correspond to the positions of the three leaflet supports in the valve frame; the artificial bioprosthetic valve stent has a first state and a second state; in the first state, the area where the anchor blocks are located on the anchor seat is concave radially inward along the anchor seat, and the outer diameter of the circle containing the outer edges of the three anchor blocks is smaller than the outer diameter of the valve seat; in the second state, the anchor seat is annular, and the outer diameter of the circle containing the outer edges of the three anchor blocks is larger than the outer diameter of the valve seat.

1. The name of the design product: injection device for swallowing balloon dilation training. 2. The use of the design product: for injecting or pumping liquid in the swallowing balloon dilation training rehabilitation treatment for patients with swallowing dysfunction. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: front view.

The invention relates to the technical field of medical instruments, and discloses a portable urethral stenosis dilator suitable for urinary surgery, comprising a handle, a joint tube connected to one end of the handle, an elastic dilation skeleton arranged at one end of the joint tube away from the handle, and an elastic sheath covering the elastic dilation skeleton; a driving adjusting mechanism is arranged in the handle, a traction rope sequentially penetrating through the joint pipe and the interior of the elastic expansion framework is connected to the driving adjusting mechanism, and the tail end of the traction rope is fixed to the end, away from the joint pipe, of the elastic expansion framework. By means of the clearance fit structure of the multiple joint pipes connected in series and the circular-truncated-cone-shaped connecting disc, the flexible implantation advantage of a balloon dilator and the rigid supporting advantage of a hard dilator are successfully achieved, and in the insertion stage, relative swing between the joint pipes enables the joint pipes to conform to physiological bending of the urethra like a catheter.

A cage can be positioned around a medical balloon, such as an angioplasty balloon, to assist in a medical procedure. The cage can include a plurality of strips, each extending between a set of rings including first and second rings. As the balloon expands, the first and second rings move closer together and allow the strips to expand outward. The cage may have wedge dissectors on the strips.

The application provides an ablation area accurate determination device, relates to the technical field of ablation area detection, and comprises a lead-in support, a balloon expansion part is fixedly connected to the lead-in support, an air pressure control part is fixedly connected inside the lead-in support, a propelling part is slidably sleeved on the air pressure control part, a ball head sliding part is fixedly connected to the propelling part, and a rotating direction adjusting device is rotatably connected to the propelling part. The overall range determination is more flexible, can effectively avoid missed detection, directly hits the lesion, can improve the overall detection accuracy, is more practical, the overall detection is more stable, solves the problems that the existing ablation area accurate determination device has poor overall use stability, is not conducive to blood circulation, is not provided with a pneumatic positioning adjusting structure, the overall positioning is not flexible enough, is not convenient for minimally invasive operation, cannot realize full-range detection, and affects the ablation area determination efficiency.